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Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Financial Instruments

The following tables summarize the Company's financial instruments' amortized cost, gross unrealized gains, gross unrealized losses, and fair value by significant investment category as of October 31, 2017 and January 31, 2017:



			October 31, 2017
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value			Level 1		Level 2			Level 3
Cash equivalents (1):
	Certificates of deposit		63.1		—		—			63.1			63.1		—			—
	Corporate debt securities		8.0		—		—			8.0			8.0		—			—
	Commercial paper		166.5		—		—			166.5			—		166.5			—
	Custody cash deposit		0.9		—		—			0.9			0.9		—			—
	Money market funds		144.8		—		—			144.8			—		144.8			—
	U.S. government securities		250.0		—		—			250.0			250.0		—			—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	7.5		—		—			7.5			7.5		—			—
		Asset backed securities	30.4		—		—			30.4			—		30.4			—
		Certificates of deposit	4.0		—		—			4.0			4.0		—			—
		Commercial paper	31.3		—		—			31.3			—		31.3			—
		Corporate debt securities	218.7		0.1		(0.1		)	218.7			218.7		—			—
		Municipal bonds	15.5				—			15.5			15.5		—			—
		Sovereign debt	6.0		—		—			6.0			—		6.0			—
		U.S. government securities	58.8		—		—			58.8			58.8		—			—
	Short-term trading securities
		Mutual funds	49.1		7.4		—			56.5			56.5		—			—
	Long-term available-for-sale
		Agency bonds	12.2		—		—			12.2			12.2		—			—
		Asset backed securities	60.8		—		(0.1		)	60.7			—		60.7			—
		Corporate debt securities	143.1		0.2		(0.1		)	143.2			143.2		—			—
		Municipal bonds	12.8		—		(0.1		)	12.7			12.7		—			—
		Sovereign debt	2.7		—		—			2.7			—		2.7			—
		U.S. government securities	32.9		—		(0.1		)	32.8			32.8		—			—
Convertible debt securities (2)			8.4		0.6		—			9.0			—		—			9.0
Derivative contract assets (3)			2.4		7.2		(0.5		)	9.1			—		7.1			2.0
Derivative contract liabilities (4)			—		—		(8.9		)	(8.9		)	—		(8.9		)	—
		Total	$	1,329.9	$	15.5	$	(9.9	)	$	1,335.5		$	883.9	$	440.6		$	11.0

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Condensed Consolidated Balance Sheets.


(2)	Considered “available-for-sale” and included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets” or “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(4)	Included in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.



			January 31, 2017
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value			Level 1		Level 2			Level 3
Cash equivalents (1):
	Agency bonds		$	6.0	$	—	$	—		$	6.0		$	6.0	$	—		$	—
	Certificates of deposit		63.1		—		—			63.1			63.1		—			—
	Commercial paper		207.4		—		—			207.4			—		207.4			—
	Corporate debt securities		40.2		—		—			40.2			40.2		—			—
	Custody cash deposit		3.2		—		—			3.2			3.2		—			—
	Money Market funds		256.5		—		—			256.5			—		256.5			—
	Municipal bonds		5.0		—		—			5.0			5.0		—			—
	Sovereign debt		15.0		—		—			15.0			—		15.0			—
	U.S. government securities		309.5		—		—			309.5			309.5		—			—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	13.2		—					13.2			13.2		—			—
		Asset backed securities	19.6		—		—			19.6			—		19.6			—
		Certificates of deposit	157.3		—		—			157.3			157.3		—			—
		Commercial paper	109.2		—		—			109.2			—		109.2			—
		Corporate debt securities	234.7		—		(0.2		)	234.5			234.5		—			—
		Municipal bonds	43.4		—		—			43.4			43.4		—			—
		Sovereign debt	30.0		—		—			30.0			—		30.0			—
		U.S. government securities	32.3		—		—			32.3			32.3		—			—
	Short-term trading securities
		Mutual funds	44.8		2.5		—			47.3			47.3		—			—
	Long-term available-for-sale
		Agency bonds	7.1		—		—			7.1			7.1		—			—
		Asset backed securities	65.8		0.1		—			65.9			—		65.9			—
		Corporate debt securities	172.1		0.1		(0.1		)	172.1			172.1		—			—
		Municipal bonds	10.7		—		—			10.7			10.7		—			—
		Sovereign debt	1.5		—		—			1.5			—		1.5			—
		U.S. government securities	48.8		0.1		—			48.9			48.9		—			—
Convertible debt securities (2)			4.9		2.3		(1.6		)	5.6			—		—			5.6
Derivative contract assets (3)			2.2		12.3		(1.3		)	13.2			—		11.9			1.3
Derivative contract liabilities (4)			—		—		(10.4		)	(10.4		)	—		(10.4		)	—
		Total	$	1,903.5	$	17.4	$	(13.6	)	$	1,907.3		$	1,193.8	$	706.6		$	6.9

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Condensed Consolidated Balance Sheets.


(2)	Considered “available-for-sale” and included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets,” “Other assets,” or “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.


(4)	Included in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.

Autodesk classifies its marketable securities as either short-term or long-term based on each instrument’s underlying contractual maturity date. Marketable securities with remaining maturities of up to 12 months are classified as short-term and marketable securities with remaining maturities greater than 12 months are classified as long-term. Autodesk may sell certain of its marketable securities prior to their stated maturities for strategic purposes or in anticipation of credit deterioration.

Autodesk applies fair value accounting for certain financial assets and liabilities, which consist of cash equivalents, marketable securities and other financial instruments, that are recognized or disclosed at fair value in the financial statements on a recurring basis. The Company defines fair value as the price that would be received from selling an asset or paid to transfer

a liability in an orderly transaction between market participants at the measurement date. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: (Level 1) observable inputs such as quoted prices in active markets; (Level 2) inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and (Level 3) unobservable inputs for which there is little or no market data, which require Autodesk to develop its own assumptions. When determining fair value, Autodesk uses observable market data and relies on unobservable inputs only when observable market data is not available. There have been no transfers between fair value measurement levels during the nine months ended October 31, 2017.

Autodesk's cash equivalents, marketable securities and financial instruments are primarily classified within Level 1 or Level 2 of the fair value hierarchy. Autodesk values its available-for-sale securities on pricing from pricing vendors, who may use quoted prices in active markets for identical assets (Level 1) or inputs other than quoted prices that are observable either directly or indirectly in determining fair value (Level 2). Autodesk's Level 2 securities are valued primarily using observable inputs other than quoted prices in active markets for identical assets and liabilities. Autodesk's Level 3 securities consist of investments held in convertible debt securities and derivative contracts which are valued using probability weighted discounted cash flow models as some of the inputs to the models are unobservable in the market.

A reconciliation of the change in Autodesk’s Level 3 items for the nine months ended October 31, 2017 follows:



	Fair Value Measurements Using Significant Unobservable Inputs
	(Level 3)
		Derivative Contracts			Convertible Debt Securities			Total
Balances, January 31, 2017		$	1.3		$	5.6		$	6.9
Purchases		1.1			5.9			7.0
Losses included in earnings		(0.4		)	(2.4		)	(2.8		)
Losses included in OCI		—			(0.1		)	(0.1		)
Balances, October 31, 2017		$	2.0		$	9.0		$	11.0

The following table summarizes the estimated fair value of Autodesk's “available-for-sale securities” classified by the contractual maturity date of the security:



	October 31, 2017
	Cost		Fair Value
Due within 1 year	$	377.4	$	377.9
Due in 1 year through 5 years	259.4		259.3
Due in 5 years through 10 years	5.7		5.7
Due after 10 years	2.6		2.6
Total	$	645.1	$	645.5

As of October 31, 2017 and January 31, 2017, Autodesk had no securities, individually and in the aggregate, in a continuous unrealized loss position for greater than twelve months.

As of October 31, 2017 and January 31, 2017, Autodesk had $116.2 million and $117.2 million, respectively, in direct investments in privately held companies accounted for under the cost method, which are periodically assessed for other-than-temporary impairment. Other than the amounts disclosed in the following paragraph, Autodesk does not intend to sell these cost method investments and it is not more likely than not that Autodesk will be required to sell the investment before recovery of the amortized cost bases, which may be maturity. Therefore, Autodesk does not consider those investments to be other-than-temporarily impaired at October 31, 2017. Autodesk estimates fair value of its cost method investments considering available information such as pricing in recent rounds of financing, current cash positions, earnings and cash flow forecasts, recent operational performance and any other readily available market data.

If Autodesk determines that an other-than-temporary impairment has occurred, Autodesk writes down the investment to its fair value. During the three and nine months ended October 31, 2017, Autodesk recorded $3.9 million and $8.0 million, respectively, in other-than-temporary impairments on its privately held investments. During the three months ended October 31, 2016, Autodesk recorded no other-than-temporary impairments on its privately held investments. During the nine months ended October 31, 2016, Autodesk recorded $0.3 million in other-than-temporary impairments on its privately held investments.

There was no loss or gain for the sales or redemptions of “available-for-sale securities” during the nine months ended October 31, 2017. The sales or redemptions of “available-for-sale securities” during the nine months ended October 31, 2016 resulted in a gain of $0.7 million. Gains and losses resulting from the sale or redemption of "available-for-sale securities" are recorded in “Interest and other expense, net” on the Company's Condensed Consolidated Statements of Operations.

Proceeds from the sale and maturity of marketable securities for the nine months ended October 31, 2017 and 2016 were $729.3 million and $1,557.3 million, respectively.

Derivative Financial Instruments

Under its risk management strategy, Autodesk uses derivative instruments to manage its short-term exposures to fluctuations in foreign currency exchange rates which exist as part of ongoing business operations. Autodesk's general practice is to hedge a portion of transaction exposures denominated in euros, Japanese yen, Swiss francs, British pounds, Canadian dollars and Australian dollars. These instruments have maturities between one and twelve months in the future. Autodesk does not enter into derivative instrument transactions for trading or speculative purposes.

The bank counterparties to the derivative contracts potentially expose Autodesk to credit-related losses in the event of their nonperformance. However, to mitigate that risk, Autodesk only contracts with counterparties who meet the Company's minimum requirements under its counterparty risk assessment process. Autodesk monitors ratings, credit spreads and potential downgrades on at least a quarterly basis. Based on Autodesk's ongoing assessment of counterparty risk, the Company will adjust its exposure to various counterparties. Autodesk generally enters into master netting arrangements, which reduce credit risk by permitting net settlement of transactions with the same counterparty. However, Autodesk does not have any master netting arrangements in place with collateral features.

Foreign currency contracts designated as cash flow hedges

Autodesk uses foreign currency contracts to reduce the exchange rate impact on a portion of the net revenue or operating expense of certain anticipated transactions. These contracts are designated and documented as cash flow hedges. The effectiveness of the cash flow hedge contracts is assessed quarterly using regression analysis as well as other timing and probability criteria. To receive cash flow hedge accounting treatment, all hedging relationships are formally documented at the inception of the hedge and the hedges are expected to be highly effective in offsetting changes to future cash flows on hedged transactions. The gross gains and losses on these hedges are included in “Accumulated other comprehensive loss” and are reclassified into earnings at the time the forecasted revenue or expense is recognized. In the event the underlying forecasted transaction does not occur, or it becomes probable that it will not occur, Autodesk reclassifies the gain or loss on the related cash flow hedge from “Accumulated other comprehensive loss” to “Interest and other expense, net” in the Company's Condensed Consolidated Financial Statements at that time.

The net notional amounts of these contracts are presented net settled and were $613.6 million at October 31, 2017 and $369.4 million at January 31, 2017. Outstanding contracts are recognized as either assets or liabilities on the balance sheet at fair value. The majority of the net loss of $0.8 million remaining in “Accumulated other comprehensive loss” as of October 31, 2017 is expected to be recognized into earnings within the next twelve months.

Derivatives not designated as hedging instruments

Autodesk uses foreign currency contracts that are not designated as hedging instruments to reduce the exchange rate risk associated primarily with foreign currency denominated receivables and payables. These forward contracts are marked-to-market at the end of each fiscal quarter with gains and losses recognized as “Interest and other expense, net.” These derivative instruments do not subject the Company to material balance sheet risk due to exchange rate movements because gains and losses on these derivative instruments are intended to offset the gains or losses resulting from the settlement of the underlying foreign currency denominated receivables and payables. The net notional amounts of these foreign currency contracts are presented net settled and were $189.0 million at October 31, 2017 and $270.6 million at January 31, 2017.

In addition to these foreign currency contracts, Autodesk holds derivative instruments issued by privately held companies, which are not designated as hedging instruments. These derivatives consist of certain conversion options on the convertible debt securities held by Autodesk and an option to acquire a privately held company. These derivatives are recorded at fair value as of each balance sheet date and are recorded in “Other assets.” Changes in the fair values of these instruments are recognized in “Interest and other expense, net.”

Fair Value of Derivative Instruments

The fair values of derivative instruments in Autodesk’s Condensed Consolidated Balance Sheets were as follows as of October 31, 2017 and January 31, 2017:



	Balance Sheet Location	Fair Value at
	Balance Sheet Location	October 31, 2017		January 31, 2017
Derivative Assets
Foreign currency contracts designated as cash flow hedges	Prepaid expenses and other current assets	$	4.4	$	10.1
Derivatives not designated as hedging instruments	Prepaid expenses and other current assets and Other assets	4.7		3.2
Total derivative assets		$	9.1	$	13.3
Derivative Liabilities
Foreign currency contracts designated as cash flow hedges	Other accrued liabilities	$	8.5	$	4.5
Derivatives not designated as hedging instruments	Other accrued liabilities	0.4		6.0
Total derivative liabilities		$	8.9	$	10.5

The effects of derivatives designated as hedging instruments on Autodesk’s Condensed Consolidated Statements of Operations were as follows for the three and nine months ended October 31, 2017 and 2016 (amounts presented include any income tax effects):



	Foreign Currency Contracts
	Three Months Ended October 31,					Nine Months Ended October 31,
	2017		2016			2017			2016
Amount of gain (loss) recognized in accumulated other comprehensive (loss) income on derivatives (effective portion)	$	2.9	$	1.8		$	(8.5	)	$	(3.1	)
Amount and location of gain (loss) reclassified from accumulated other comprehensive (loss) income into (loss) income (effective portion)
Net revenue	$	2.4	$	1.0		$	7.2		$	8.4
Operating expenses	2.9		1.5			(0.3		)	0.2
Total	$	5.3	$	2.5		$	6.9		$	8.6
Amount and location of gain (loss) recognized in (loss) income on derivatives (ineffective portion and amount excluded from effectiveness testing)
Interest and other expense, net	$	—	$	(0.1	)	$	(0.1	)	$	(0.5	)

The effects of derivatives not designated as hedging instruments on Autodesk’s Condensed Consolidated Statements of Operations were as follows for the three and nine months ended October 31, 2017 and 2016 (amounts presented include any income tax effects):



	Three Months Ended October 31,					Nine Months Ended October 31,
	2017		2016			2017			2016
Amount and location of gain (loss) recognized in (loss) income on derivatives
Interest and other expense, net	$	0.9	$	(1.4	)	$	(7.4	)	$	(12.3	)

Stock-based Compensation Expense

9 Months Ended

Oct. 31, 2017

Stock-based Compensation Expense

Restricted Stock Units:

A summary of restricted stock activity for the nine months ended October 31, 2017 is as follows:



	Unvested Restricted Stock Units		Weighted average grant date fair value per share
	(in thousands)
Unvested restricted stock units at January 31, 2017	7,622.4		$	60.13
Granted	2,036.6		106.45
Vested	(3,156.6	)	57.21
Canceled/Forfeited	(534.3	)	67.05
Performance Adjustment (1)	24.7		61.79
Unvested restricted stock units at October 31, 2017	5,992.8		$	78.94

_______________


(1)	Based on Autodesk's financial results and relative total stockholder return for the fiscal 2017 performance period. The performance stock units were attained at rates ranging from 99.7% to 114.7% of the target award.

The fair value of the shares vested during the nine months ended October 31, 2017 and 2016 was $332.8 million and $180.3 million, respectively.

During the nine months ended October 31, 2017, Autodesk granted 1.8 million restricted stock units. Autodesk recorded stock-based compensation expense related to restricted stock units of $51.5 million and $45.2 million during the three months ended October 31, 2017 and 2016, respectively. Autodesk recorded stock-based compensation expense related to restricted stock units of $153.5 million and $125.5 million during the nine months ended October 31, 2017 and 2016, respectively. The $153.5 million of stock-based compensation expense for the nine months ended October 31, 2017 includes $9.1 million related to the acceleration of eligible restricted stock awards in conjunction with the Company's CEO transition.

During the nine months ended October 31, 2017, Autodesk granted 0.2 million performance stock units for which the ultimate number of shares earned is determined based on the achievement of performance criteria at the end of the stated service and performance period. During the period, we granted two different types of performance stock units.

The performance criteria for the first type of performance stock units were based on a mix of net subscription additions, Annualized Recurring Revenue ("ARR"), non-GAAP total spend, and total subscription renewal rate goals adopted by the Compensation and Human Resource Committee, as well as total stockholder return compared against companies in the S&P Computer Software Select Index or the S&P North American Technology Software Index (“Relative TSR”). These performance stock units vest over a three-year period and have the following vesting schedule:


•	Up to one third of the performance stock units may vest following year one, depending upon the achievement of the performance criteria for fiscal 2018 as well as 1-year Relative TSR (covering year one).


•	Up to one third of the performance stock units may vest following year two, depending upon the achievement of the performance criteria for year two as well as 2-year Relative TSR (covering years one and two).


•	Up to one third of the performance stock units may vest following year three, depending upon the achievement of the performance criteria for year three as well as 3-year Relative TSR (covering years one, two and three).

The performance criteria for the second type of performance stock units granted to our Chief Executive Officer during the nine months ended October 31, 2017 were based on fiscal 2020 free cash flow per share and ARR goals adopted by the Compensation and Human Resource Committee. These performance stock units vest in March 2020 based on the Company’s fiscal 2020 performance against the performance criteria.

Performance stock units are not considered outstanding stock at the time of grant, as the holders of these units are not entitled to any of the rights of a stockholder, including voting rights. Autodesk has determined the grant date fair value for these awards using stock price on the date of grant or if the awards are also subject to a market condition, a Monte Carlo simulation

model. The fair value of the performance stock units is expensed using the accelerated attribution over the vesting period. Autodesk recorded stock-based compensation expense related to performance stock units of $7.1 million and $4.9 million for the three months ended October 31, 2017 and 2016, respectively. Autodesk recorded stock-based compensation expense related to performance stock units of $27.7 million and $17.1 million for the nine months ended October 31, 2017 and 2016, respectively. The $27.7 million of stock-based compensation expense for the nine months ended October 31, 2017 includes $7.5 million related to the acceleration of eligible performance stock awards in conjunction with the Company's CEO transition.

1998 Employee Qualified Stock Purchase Plan (“ESPP”)

Under Autodesk’s ESPP, which was approved by stockholders in 1998, eligible employees may purchase shares of Autodesk’s common stock at their discretion using up to 15% of their eligible compensation, subject to certain limitations, at 85% of the lower of Autodesk's closing price (fair market value) on the offering date or the exercise date. The offering period for ESPP awards consists of four, six-month exercise periods within a 24-month offering period.

A summary of the ESPP activity for three and nine months ended October 31, 2017 and 2016 is as follows:



	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
Issued shares	0.9		1.1		2.0		2.3
Average price of issued shares	$	39.92	$	37.36	$	39.03	$	36.99
Weighted average grant date fair value of awards granted under the ESPP (1)	$	33.04	$	20.75	$	32.41	$	19.20

_______________


(1)	Calculated as of the award grant date using the Black-Scholes Merton (“BSM") option pricing model.

Stock-based Compensation Expense

The following table summarizes stock-based compensation expense for the three and nine months ended October 31, 2017 and 2016, respectively, as follows:



	Three Months Ended October 31,					Nine Months Ended October 31,
	2017			2016		2017			2016
Cost of maintenance and subscription revenue (1)	$	2.8		$	2.2	$	8.5		$	6.2
Cost of license and other revenue (1)	1.0			1.3		3.1			4.1
Marketing and sales	27.7			24.2		80.1			69.0
Research and development	20.1			20.9		61.7			60.0
General and administrative	13.5			8.0		46.1			23.2
Stock-based compensation expense related to stock awards and ESPP purchases	65.1			56.6		199.5			162.5
Tax benefit	(1.3		)	—		(1.6		)	—
Stock-based compensation expense related to stock awards and ESPP purchases, net of tax	$	63.8		$	56.6	$	197.9		$	162.5

_______________


(1)	Prior periods have been adjusted to conform with the current period's presentation. See Note 1, "Basis of Presentation," for additional information.

Stock-based Compensation Expense Assumptions

Autodesk determines the grant date fair value of its share-based payment awards using a BSM option pricing model or the quoted stock price on the date of grant, unless the awards are subject to market conditions, in which case Autodesk uses a binomial-lattice model (e.g., Monte Carlo simulation model). The Monte Carlo simulation model uses multiple input variables to estimate the probability that market conditions will be achieved. Autodesk uses the following assumptions to estimate the fair value of stock-based awards:



	Three Months Ended October 31, 2017		Three Months Ended October 31, 2016
	Performance Stock Unit (1)	ESPP	Performance Stock Unit (1)	ESPP
Range of expected volatilities	N/A	31.7 - 33.4%	N/A	31.0 - 33.9%
Range of expected lives (in years)	N/A	0.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	N/A	—%	N/A	—%
Range of risk-free interest rates	N/A	1.2 - 1.4%	N/A	0.5 - 0.8%
	Nine Months Ended October 31, 2017		Nine Months Ended October 31, 2016
	Performance Stock Unit	ESPP	Performance Stock Unit	ESPP
Range of expected volatilities	31.8%	31.4 - 33.7%	38.4 - 38.6%	30.0 - 40.2%
Range of expected lives (in years)	N/A	0.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	—%	—%	—%	—%
Range of risk-free interest rates	1.0 - 1.2%	0.9 - 1.4%	0.6 - 0.7%	0.5 - 0.9%

_______________


(1)	Autodesk did not grant PSUs that were subject to market conditions in the three months ended October 31, 2017 or 2016.

Autodesk estimates expected volatility for stock-based awards based on the average of the following two measures: (1) a measure of historical volatility in the trading market for the Company’s common stock, and (2) the implied volatility of traded forward call options to purchase shares of the Company’s common stock. The expected volatility for performance stock units subject to market conditions includes the expected volatility of Autodesk's peer companies within the S&P Computer Software Select Index or S&P North American Technology Software Index with a market capitalization over $2.00 billion, depending on the award type.

The range of expected lives of ESPP awards are based upon the four, six-month exercise periods within a 24-month offering period.

Autodesk does not currently pay, and does not anticipate paying in the foreseeable future, any cash dividends. Consequently, an expected dividend yield of zero is used in the BSM option pricing model and the Monte Carlo simulation model.

The risk-free interest rate used in the BSM option pricing model and the Monte Carlo simulation model for stock-based awards is the historical yield on U.S. Treasury securities with equivalent remaining lives.

Autodesk recognizes expense only for the stock-based awards that ultimately vest. As permitted by ASU 2016-09, Autodesk accounts for forfeitures of our stock-based awards as those forfeitures occur.

Income Tax	9 Months Ended
Income Tax	Oct. 31, 2017
Income Tax Disclosure [Abstract]
Income Tax	Income Tax Autodesk's income tax expense was $8.6 million and $13.5 million for the three months ended October 31, 2017 and 2016, respectively, relative to pre-tax losses of $111.2 million and $129.3 million, respectively, for the same periods. The decrease in income tax expense was primarily due to the lower forecasted worldwide tax expense as the result of changes in the geographic mix of worldwide pre-tax book income. For the three months ended October 31, 2016, the discrete items were primarily from tax benefit on acceleration of revenue while the discrete items for the three months ended October 31, 2017 related to the expiration of the statute of limitations related to an uncertain tax position and the excess tax benefit of stock compensation. Autodesk's income tax expense was $34.4 million and $53.1 million for the nine months ended October 31, 2017 and 2016, respectively, relative to pre-tax losses of $359.0 million and $355.6 million, respectively, for the same periods. The decrease in income tax expense was primarily discrete items in the quarter related to the expiration of the statute of limitations related to an uncertain tax position, the excess tax benefit of stock compensation and the reversal of foreign withholding tax accruals. Income tax expense consists primarily of foreign taxes, U.S. tax expense related to indefinite-lived intangibles, and withholding taxes. Autodesk regularly assesses the need for a valuation allowance against its deferred tax assets. In making that assessment, Autodesk considers both positive and negative evidence related to the likelihood of realization of the deferred tax assets to determine, based on the weight of available evidence, whether it is more likely than not that some or all of the deferred tax assets will not be realized. In evaluating the need for a valuation allowance, Autodesk considered cumulative losses in the United States arising from the Company's business model transition as a significant piece of negative evidence and established a valuation allowance against the Company’s U.S. deferred tax assets in fiscal 2016. Based on the positive and negative evidence as of October 31, 2017, the Company continues to maintain a valuation allowance for the U.S. deferred tax assets. As of October 31, 2017, the Company had $291.4 million of gross unrecognized tax benefits, excluding interest, of which approximately $277.4 million represents the amount of unrecognized tax benefits that would impact the effective tax rate, if recognized. However, this rate impact would be $30.8 million to the extent that recognition of unrecognized tax benefits currently presented as a reduction of deferred tax assets would increase the valuation allowance. It is possible that the amount of unrecognized tax benefits will change in the next twelve months; however, an estimate of the range of the possible change cannot be made at this time. The Internal Revenue Service has started an examination of the Company's U.S. consolidated federal income tax returns for fiscal years 2014 and 2015. While it is possible that the Company's tax positions may be challenged, the Company believes its positions are consistent with the tax law, and the balance sheet reflects appropriate liabilities for uncertain federal tax positions for the years being examined.

Acquisitions	9 Months Ended
Acquisitions	Oct. 31, 2017
Business Combinations [Abstract]
Acquisitions	Acquisitions During the nine months ended October 31, 2017, Autodesk did not complete any business combinations or technology acquisitions. For acquisitions accounted for as business combinations, Autodesk records the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values at the date of acquisition. The fair values assigned to the identifiable intangible assets acquired were based on estimates and assumptions determined by management. Autodesk records the excess of consideration transferred over the aggregate fair values as goodwill. The goodwill recorded is primarily attributable to synergies expected to arise after the acquisitions.

Other Intangible Assets, Net

9 Months Ended

Oct. 31, 2017

Other Intangible Assets, Net

Other intangible assets including developed technologies, customer relationships, trade names, patents, user lists and the related accumulated amortization were as follows:



	October 31, 2017			January 31, 2017
Developed technologies, at cost	$	577.0		$	583.6
Customer relationships, trade names, patents, and user lists, at cost (1)	367.1			375.9
Other intangible assets, at cost (2)	944.1			959.5
Less: Accumulated amortization	(882.5		)	(862.0		)
Other intangible assets, net	$	61.6		$	97.5

_______________


(1)	Included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.

(2)

Includes the effects of foreign currency translation.

Goodwill

9 Months Ended

Oct. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Goodwill consists of the excess of consideration transferred over the fair value of net assets acquired in business combinations. The following table summarizes the changes in the carrying amount of goodwill for the nine months ended October 31, 2017:



Balance as of January 31, 2017	$	1,710.3
Less: accumulated impairment losses as of January 31, 2017	(149.2		)
Net balance as of January 31, 2017	1,561.1
Additions arising from acquisitions during the period	—
Effect of foreign currency translation, purchase accounting adjustments, and other during the period	27.6
Balance as of October 31, 2017	$	1,588.7

Autodesk operates as a single operating segment and single reporting unit. As such, when Autodesk tests goodwill for impairment annually in its fourth fiscal quarter, it is performed on the Company's single reporting unit. Autodesk performs impairment testing more often if circumstances indicate a potential impairment may exist, or if events have affected the composition of reporting units.

When goodwill is assessed for impairment, Autodesk has the option to perform an assessment of qualitative factors of impairment (“optional assessment”) prior to necessitating a quantitative impairment test. Should the optional assessment be used for any given fiscal year, qualitative factors to consider include cost factors; financial performance; legal, regulatory, contractual, political, business, or other factors; entity specific factors; industry and market considerations, macroeconomic conditions, and other relevant events and factors affecting the reporting unit. If, after assessing the totality of events or circumstances, it is more likely than not that the fair value of the reporting unit is greater than its carrying value, then performing the quantitative impairment test is unnecessary.

The quantitative impairment test is necessary when either Autodesk does not use the optional assessment or, as a result of the optional assessment, it is not more likely than not that the fair value of the reporting unit is greater than its carrying value.

As described in Note 2, "Recently Issued Accounting Standards," Autodesk early adopted ASU 2017-04, which simplifies the subsequent measurement of goodwill to eliminate Step 2 from the goodwill impairment test, removing the need to determine the implied fair value of goodwill and comparing it to the carrying amount of that goodwill to measure the impairment loss, if any. In situations in which an entity's reporting unit is publicly traded, the fair value of the Company may be approximated by its market capitalization, in performing the quantitative impairment test.

Goodwill impairment exists when the estimated fair value of goodwill is less than its carrying value. If impairment exists, the carrying value of the goodwill is reduced to fair value through an impairment charge recorded in our statements of operations. The process of evaluating the potential impairment of goodwill is subjective and requires significant judgment at many points during the analysis. The value of Autodesk’s goodwill could also be impacted by future adverse changes such as:

(i) declines in Autodesk’s actual financial results, (ii) a sustained decline in Autodesk’s market capitalization, (iii) a significant slowdown in the worldwide economy or the industries Autodesk serves, or (iv) changes in Autodesk’s business strategy.

There was no goodwill impairment during the three and nine months October 31, 2017.

Deferred Compensation	9 Months Ended
Deferred Compensation	Oct. 31, 2017
Deferred Compensation Arrangements [Abstract]
Deferred Compensation	Deferred Compensation At October 31, 2017, Autodesk had marketable securities totaling $693.0 million, of which $56.5 million related to investments in debt and equity securities that are held in a rabbi trust under non-qualified deferred compensation plans. The total related deferred compensation liability was $56.5 million at October 31, 2017, of which $3.8 million was classified as current and $52.7 million was classified as non-current liabilities. The total related deferred compensation liability at January 31, 2017 was $47.3 million, of which $3.1 million was classified as current and $44.2 million was classified as non-current liabilities. The securities are recorded in the Condensed Consolidated Balance Sheets under the current portion of "Marketable securities." The current and non-current portions of the liability are recorded in the Condensed Consolidated Balance Sheets under “Accrued compensation” and “Other liabilities,” respectively.

Computer Equipment, Software, Furniture and Leasehold Improvements, Net

9 Months Ended

Oct. 31, 2017

Computer Equipment, Software, Furniture and Leasehold Improvements, Net

Computer equipment, software, furniture, leasehold improvements and the related accumulated depreciation were as follows:



	October 31, 2017			January 31, 2017
Computer hardware, at cost	$	210.8		$	206.1
Computer software, at cost	70.5			73.5
Leasehold improvements, land and buildings, at cost	221.9			206.3
Furniture and equipment, at cost	61.9			58.2
	565.1			544.1
Less: Accumulated depreciation	(417.0		)	(385.5		)
Computer software, hardware, leasehold improvements, furniture and equipment, net	$	148.1		$	158.6

Borrowing Arrangements	9 Months Ended
Borrowing Arrangements	Oct. 31, 2017
Line of Credit Facility [Abstract]
Borrowing Arrangements	Borrowing Arrangements In June 2017, Autodesk issued $500.0 million aggregate principal amount of 3.5% notes due June 15, 2027 (collectively, the “2017 Notes”). Net of a discount of $3.1 million and issuance costs of $4.9 million, Autodesk received net proceeds of $492.0 million from issuance of the 2017 Notes. Both the discount and issuance costs are being amortized to interest expense over the term of the 2017 Notes using the effective interest method. The proceeds of the 2017 Notes have been used for the repayment of $400.0 million of debt due December 15, 2017 and the remainder is available for general corporate purposes. Autodesk may redeem the 2017 Notes at any time, subject to a make whole premium. In addition, upon the occurrence of certain change of control triggering events, Autodesk may be required to repurchase the 2017 Notes at a price equal to 101% of their principal amount, plus accrued and unpaid interest to the date of repurchase. The 2017 Notes contain restrictive covenants that limit Autodesk's ability to create certain liens, to enter into certain sale and leaseback transactions and to consolidate or merge with, or convey, transfer or lease all or substantially all of its assets, subject to important qualifications and exceptions. Based on quoted market prices, the fair value of the 2017 Notes was approximately $502.7 million as of October 31, 2017. In June 2015, Autodesk issued $450.0 million aggregate principal amount of 3.125% notes due June 15, 2020 and $300.0 million aggregate principal amount of 4.375% notes due June 15, 2025 (collectively, the “2015 Notes”). Net of a discount of $1.7 million and issuance costs of $6.3 million, Autodesk received net proceeds of $742.0 million from issuance of the 2015 Notes. Both the discount and issuance costs are being amortized to interest expense over the respective terms of the 2015 Notes using the effective interest method. The proceeds of the 2015 Notes are available for general corporate purposes. Autodesk may redeem the 2015 Notes at any time, subject to a make whole premium. In addition, upon the occurrence of certain change of control triggering events, Autodesk may be required to repurchase the 2015 Notes at a price equal to 101% of their principal amount, plus accrued and unpaid interest to the date of repurchase. The 2015 Notes contain restrictive covenants that limit Autodesk's ability to create certain liens, to enter into certain sale and leaseback transactions and to consolidate or merge with, or convey, transfer or lease all or substantially all of its assets, subject to important qualifications and exceptions. Based on quoted market prices, the fair value of the 2015 Notes was approximately $781.9 million as of October 31, 2017. In December 2012, Autodesk issued $400.0 million aggregate principal amount of 1.95% notes due December 15, 2017 and $350.0 million aggregate principal amount of 3.6% notes due December 15, 2022 (collectively, the “2012 Notes”). Autodesk received net proceeds of $739.3 million from issuance of the 2012 Notes, net of a discount of $4.5 million and issuance costs of $6.1 million. Both the discount and issuance costs are being amortized to interest expense over the respective terms of the 2012 Notes using the effective interest method. The proceeds of the 2012 Notes are available for general corporate purposes. On July 27, 2017, Autodesk redeemed in full $400.0 million in aggregate principal amount of its outstanding 1.95% senior notes due December 15, 2017. The redemption was completed pursuant to the optional redemption provisions of the first supplemental indenture dated December 13, 2012. To redeem the notes, Autodesk used the proceeds of the 2017 Notes to pay a redemption price of approximately $400.9 million, plus accrued and unpaid interest. Total cash repayment was $401.8 million. The Company did not incur any additional early termination penalties in connection with such redemption. Based on the quoted market price, the fair value of the remaining 2012 Notes was approximately $360.8 million as of October 31, 2017. Autodesk’s line of credit facility permits unsecured short-term borrowings of up to $400.0 million, with an option to request an increase in the amount of the credit facility by up to an additional $100.0 million, and is available for working capital or other business needs. This credit agreement contains customary covenants that could restrict the imposition of liens on Autodesk’s assets, and restrict the Company’s ability to incur additional indebtedness or make dispositions of assets if Autodesk fails to maintain the financial covenants. As the result of a forecasted inability to comply with the credit agreement's minimum interest coverage ratio in the first quarter of fiscal 2018, the Company renegotiated the credit agreement's financial covenants in April 2017. The financial covenants now consist of a maximum debt to total cash ratio, a fixed charge coverage ratio through April 30, 2018, and after April 30, 2018, a minimum interest coverage ratio. The line of credit is syndicated with various financial institutions, including Citibank, N.A., an affiliate of Citigroup, which is one of the lead lenders and an agent. The maturity date on the line of credit is May 2020. At October 31, 2017, Autodesk was in compliance with the credit facility's covenants and had no outstanding borrowings on this line of credit.

Restructuring charges and other facility exit costs, net

9 Months Ended

Oct. 31, 2017

Restructuring and Related Activities [Abstract]

Restructuring charges and other facility exit costs, net

In February 2016, the Board of Directors approved a world-wide restructuring plan (“Fiscal 2017 Plan”) in order to re-balance staffing levels and reduce operating expenses to better align them with the evolving needs of the business. The Company paid substantially all of the employee termination benefits and facility related liabilities under the Fiscal 2017 Plan by the end of fiscal 2017.

The following table sets forth the restructuring charges and other lease termination exit costs during the nine months ended October 31, 2017:



	Balances, January 31, 2017		Additions		Payments			Adjustments (1)			Balances, October 31, 2017
Fiscal 2017 Plan
Employee termination costs	$	1.1	$	0.1	$	(1.4	)	$	0.2		$	—
Lease termination and other exit costs	1.9		0.1		(1.4		)	(0.3		)	0.3
Other Lease Termination Costs
Lease termination costs	4.5		0.3		(2.3		)	(0.2		)	2.3
Total	$	7.5	$	0.5	$	(5.1	)	$	(0.3	)	$	2.6
Current portion (2)	$	5.9									$	2.4
Non-current portion (2)	1.6										0.2
Total	$	7.5									$	2.6

____________________


(1)	Adjustments primarily include the impact from a change in sublease assumptions related to certain lease terminations.

(2)

The current and non-current portions of the reserve are recorded in the Condensed Consolidated Balance Sheets under “Other accrued liabilities” and “Other liabilities,” respectively.

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Oct. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Guarantees and Indemnifications In the normal course of business, Autodesk provides indemnifications of varying scopes, including limited product warranties and indemnification of customers against claims of intellectual property infringement made by third parties arising from the use of its products or services. Autodesk accrues for known indemnification issues if a loss is probable and can be reasonably estimated. Historically, costs related to these indemnifications have not been significant, and because potential future costs are highly variable, Autodesk is unable to estimate the maximum potential impact of these indemnifications on its future results of operations. In connection with the purchase, sale or license of assets or businesses with third parties, Autodesk has entered into or assumed customary indemnification agreements related to the assets or businesses purchased, sold or licensed. Historically, costs related to these indemnifications have not been significant, and because potential future costs are highly variable, Autodesk is unable to estimate the maximum potential impact of these indemnifications on its future results of operations. As permitted under Delaware law, Autodesk has agreements whereby it indemnifies its officers and directors for certain events or occurrences while the officer or director is, or was, serving at Autodesk’s request in such capacity. The maximum potential amount of future payments Autodesk could be required to make under these indemnification agreements is unlimited; however, Autodesk has directors’ and officers’ liability insurance coverage that is intended to reduce its financial exposure and may enable Autodesk to recover a portion of any future amounts paid. Autodesk believes the estimated fair value of these indemnification agreements in excess of applicable insurance coverage is minimal. Legal Proceedings Autodesk is involved in a variety of claims, suits, investigations, and proceedings in the normal course of business activities including claims of alleged infringement of intellectual property rights, commercial, employment, piracy prosecution, business practices, and other matters. Autodesk routinely reviews the status of each significant matter and assesses its potential financial exposure. If the potential loss from any matter is considered probable and the amount can be reasonably estimated, Autodesk records a liability for the estimated loss. Because of inherent uncertainties related to these legal matters, Autodesk bases its loss accruals on the best information available at the time. As additional information becomes available, Autodesk reassesses its potential liability and may revise its estimates. In the Company's opinion, resolution of pending matters is not expected to have a material adverse impact on its consolidated results of operations, cash flows, or its financial position. Given the unpredictable nature of legal proceedings, there is a reasonable possibility that an unfavorable resolution of one or more such proceedings could in the future materially affect the Company's results of operations, cash flows, or financial position in a particular period, however, based on the information known by the Company as of the date of this filing and the rules and regulations applicable to the preparation of the Company's financial statements, any such amount is either immaterial or it is not possible to provide an estimated amount of any such potential loss.

Common Stock Repurchase Program	9 Months Ended
Common Stock Repurchase Program	Oct. 31, 2017
Class of Stock Disclosures [Abstract]
Common Stock Repurchase Program	Common Stock Repurchase Program Autodesk has a stock repurchase program that is used to offset dilution from the issuance of stock under the Company’s employee stock plans and for such other purposes as may be in the interests of Autodesk and its stockholders. Stock repurchases have the effect of returning excess cash generated from the Company’s business to stockholders. During the three and nine months ended October 31, 2017, Autodesk repurchased and retired 1.0 million and 4.4 million shares at an average repurchase price of $112.97 and $96.39 per share, respectively. Common stock and additional paid-in capital and accumulated deficit were reduced by $35.6 million and $81.7 million, respectively, during the three months ended October 31, 2017. Common stock and additional paid-in capital and accumulated deficit were reduced by $117.6 million and $310.3 million, respectively, during the nine months ended October 31, 2017. At October 31, 2017, 22.1 million shares remained available for repurchase under the repurchase program approved by the Board of Directors. During the nine months ended October 31, 2017, Autodesk repurchased its common stock through open market purchases. The number of shares acquired and the timing of the purchases are based on several factors, including general market and economic conditions, the number of employee stock option exercises and stock issuances, the trading price of Autodesk common stock, cash on hand and available in the United States, cash requirements for acquisitions, and Company defined trading windows.

Accumulated Other Comprehensive Loss

9 Months Ended

Oct. 31, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss, net of taxes, consisted of the following at October 31, 2017:



	Net Unrealized Gains (Losses) on Derivative Instruments			Net Unrealized Gains (Losses) on Available-for-Sale Securities			Defined Benefit Pension Components			Foreign Currency Translation Adjustments			Total
Balances, January 31, 2017	$	14.6		$	1.5		$	(33.8	)	$	(160.8	)	$	(178.5	)
Other comprehensive (loss) income before reclassifications	(10.2		)	0.7			(0.1		)	38.8			29.2
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss	(6.9		)	—			0.1			0.1			(6.7		)
Tax effects	1.7			(0.3		)	—			(0.9		)	0.5
Net current period other comprehensive (loss) income	(15.4		)	0.4			—			38.0			23.0
Balances, October 31, 2017	$	(0.8	)	$	1.9		$	(33.8	)	$	(122.8	)	$	(155.5	)

Reclassifications related to gains and losses on available-for-sale securities are included in "Interest and other expense, net." Refer to Note 4, "Financial Instruments," for the amount and location of reclassifications related to derivative instruments. Reclassifications of the defined benefit pension components are included in the computation of net periodic benefit cost. For further information, see the "Retirement Benefit Plans" note in Part II, Item 8 of our Annual Report on Form 10-K for the fiscal year ended January 31, 2017.

Net Loss Per Share

9 Months Ended

Oct. 31, 2017

Net Loss Per Share

Basic net loss per share is computed using the weighted average number of shares of common stock outstanding for the period, excluding stock options and restricted stock units. Diluted net loss per share is based upon the weighted average number of shares of common stock outstanding for the period and potentially dilutive common shares, including the effect of stock options and restricted stock units under the treasury stock method. The following table sets forth the computation of the numerators and denominators used in the basic and diluted net loss per share amounts:



	Three Months Ended October 31,						Nine Months Ended October 31,
	2017			2016			2017			2016
Numerator:
Net loss	$	(119.8	)	$	(142.8	)	$	(393.4	)	$	(408.7	)
Denominator:
Denominator for basic net loss per share—weighted average shares	219.6			222.3			219.7			223.3
Effect of dilutive securities (1)	—			—			—			—
Denominator for dilutive net loss per share	219.6			222.3			219.7			223.3
Basic net loss per share	$	(0.55	)	$	(0.64	)	$	(1.79	)	$	(1.83	)
Diluted net loss per share	$	(0.55	)	$	(0.64	)	$	(1.79	)	$	(1.83	)

____________________

(1)

The effect of dilutive securities of 4.1 million and 4.4 million shares in the three months ended October 31, 2017 and 2016, respectively, have been excluded from the calculation of diluted net loss per share as those shares would have been anti-dilutive due to the net loss incurred during those periods. The effect of dilutive securities of 4.4 million and 4.0 million shares in the nine months ended October 31, 2017 and 2016, respectively, have been excluded from the calculation of diluted net loss per share as those shares would have been anti-dilutive due to the net loss incurred during those periods.

The computation of diluted net loss per share does not include shares that are anti-dilutive under the treasury stock method because their exercise prices are higher than the average market value of Autodesk’s stock during the period. For both the three months ended October 31, 2017 and 2016, zero potentially anti-dilutive shares were excluded from the computation of diluted net loss per share. For the nine months ended October 31, 2017 and 2016, 0.3 million and 0.4 million potentially anti-dilutive shares were excluded from the computation of diluted net loss per share, respectively.

Segment, Geographic and Product Family Information

9 Months Ended

Oct. 31, 2017

Segment, Geographic and Product Family Information

Autodesk reports segment information based on the “management” approach. The management approach designates the internal reporting used by management for making decisions, allocating resources and assessing performance as the source of the Company’s reportable segments. The Company's chief operating decision maker ("CODM") allocates resources and assesses the operating performance of the Company as a whole. As such, Autodesk has one segment manager (the CODM), and one operating segment.

Information regarding Autodesk’s revenue by geographic area and product family is as follows:



	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
Net revenue by geographic area:
Americas
U.S.	$	182.4	$	182.2	$	546.8	$	562.1
Other Americas	32.2		31.1		91.9		99.0
Total Americas	214.6		213.3		638.7		661.1
Europe, Middle East and Africa	205.4		191.0		594.4		614.1
Asia Pacific	95.3		85.3		269.7		277.0
Total net revenue	$	515.3	$	489.6	$	1,502.8	$	1,552.2

Net revenue by product family:
Architecture, Engineering and Construction	$	215.4	$	212.3	$	628.7	$	684.4
Manufacturing	146.9		146.6		436.0		481.5
AutoCAD and AutoCAD LT	102.7		80.1		290.7		239.1
Media and Entertainment	37.7		34.2		112.1		103.6
Other	12.6		16.4		35.3		43.6
	$	515.3	$	489.6	$	1,502.8	$	1,552.2

Subsequent Events

9 Months Ended

Oct. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Subsequent Events

On November 22, 2017, the Company's Board of Directors approved a restructuring plan to support the Company's strategic priorities of completing the subscription transition, digitizing the Company, and re-imagining manufacturing, construction, and production. Through the restructuring, Autodesk seeks to reduce its investments in areas not aligned with its strategic priorities, including in areas related to research and development and go-to-market activities. At the same time, Autodesk plans to further invest in strategic priority areas related to digital infrastructure, customer success, and construction. By re-balancing resources to better align with the Company’s strategic priorities, Autodesk is positioning itself to meet its long-term goals. This world-wide restructuring plan includes a reduction in force that will result in the termination of approximately 13% of the Company’s workforce, or approximately 1,150 employees, and the consolidation of certain leased facilities.

The Company expects to substantially complete the reduction in force and the facilities consolidation by the end of its fourth quarter of fiscal 2019 (which fiscal quarter ends January 31, 2019). The Company anticipates incurring pre-tax restructuring charges of $135 million to $149 million, substantially all of which would result in cash expenditures, $124 million to $137 million of which would be for one-time employee termination benefits, and $11 million to $12 million of which would be for facilities-related and other costs. The Company expects to expense these pre-tax charges in the following periods:



Fiscal Quarter	Approximate pre-tax restructuring charge (in millions)
Q4 FY18 (ending January 31, 2018)	$91 - $100
Q1 FY19 (ending April 30, 2018)	$21 - $24
Q2 FY19 (ending July 31, 2018)	$14 - $15
Q3 FY19 (ending October 31, 2018)	$8 - $9
Q4 FY19 (ending January 31, 2019)	$1

Basis of Presentation (Policies)	9 Months Ended
Basis of Presentation (Policies)	Oct. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The accompanying unaudited Condensed Consolidated Financial Statements of Autodesk, Inc. (“Autodesk,” “we,” “us,” “our,” or the “Company”) as of October 31, 2017, and for the three and nine months ended October 31, 2017 and 2016, have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information along with the instructions to Form 10-Q and Article 10 of Securities and Exchange Commission (“SEC”) Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements. In management’s opinion, Autodesk made all adjustments (consisting of normal, recurring and non-recurring adjustments) during the quarter that were considered necessary for the fair statement of the financial position and operating results of the Company. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts in the financial statements and accompanying notes. Actual results could differ from those estimates. In addition, the results of operations for the three and nine months ended October 31, 2017 are not necessarily indicative of the results for the entire fiscal year ending January 31, 2018, or for any other period. Further, the balance sheet as of January 31, 2017 has been derived from the audited balance sheet as of this date. There have been no material changes, other than what is discussed herein, to Autodesk's significant accounting policies as compared to the significant accounting policies disclosed in the Annual Report on Form 10-K for the fiscal year ended January 31, 2017. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and related notes, together with management’s discussion and analysis of financial position and results of operations contained in Autodesk’s Annual Report on Form 10-K for the fiscal year ended January 31, 2017, filed on March 21, 2017. Change in Presentation During the first quarter of fiscal 2018, the Company changed its historical presentation of its revenue and cost of revenue categories. Previously, the Company presented revenue and cost of revenue on two lines: subscription, and license and other. Included within subscription was maintenance revenue for all our software products and revenue for our cloud service offerings. License and other revenue included product license revenue, standalone consulting services, and other immaterial items. Also, included within license and other revenue was an allocation of the estimated value of the software license from our term-based product subscriptions and enterprise offerings, which contain a software license, maintenance and cloud services. For these arrangements, as there is no vendor-specific-objective evidence ("VSOE") for the related maintenance, the arrangement consideration was allocated between the license and maintenance deliverables based on best estimated selling prices in our condensed consolidated statements of operations. The Company performed the allocation because it provided a meaningful presentation to investors based on the Company's then current product mix. As part of the Company's technological and business model transition, the Company discontinued the sale of most of its perpetual licenses, transitioning away from selling a mix of perpetual licenses and term-based product subscriptions to a single subscription model involving more highly interrelated software and cloud functionalities. Fiscal 2018 marks the first full year in the Company's history that it will sell substantially term-based product subscriptions. To better reflect this shift in our business, the Company adopted a revised presentation in the first quarter of fiscal 2018, including the separation of subscription revenue and maintenance revenue on distinct line items on the Company's condensed consolidated statement of operations. Subscription revenue now consists of our full term-based product subscriptions, cloud service offerings, and flexible enterprise business arrangements. Note that with the change in our presentation of revenue in our condensed consolidated statement of operations in the first quarter of fiscal 2018, our term-based product subscriptions and flexible enterprise business arrangements are classified and presented in a single line item. Maintenance revenue is presented as a separate line item in the new presentation and consists of revenue from our existing maintenance plan agreements and related renewals. License and other revenue will continue to be presented as a separate line item and include any residual perpetual licenses sold, standalone consulting services, and other immaterial items. In connection with these revisions, the Company also revised its cost of revenue classification to present cost of subscription and maintenance revenue and amortization of developed technology separately. Cost of license and other revenue will continue to be presented as a separate line item.
Recently Issued Accounting Standards	Recently Issued Accounting Standards With the exception of those discussed below, there have been no recent changes in accounting pronouncements issued by the Financial Accounting Standards Board (“FASB”) or adopted by the Company during the nine months ended October 31, 2017, that are of significance, or potential significance, to the Company. Accounting standard adopted in the current fiscal year Autodesk adopted FASB's Accounting Standards Update No. 2017-04 ("ASU 2017-04"), "Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" during the three months ended April 30, 2017. The ASU simplifies the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test. Under current guidance, Step 2 of the goodwill impairment test requires entities to calculate the implied fair value of goodwill in the same manner as the amount of goodwill recognized in a business combination by assigning the fair value of a reporting unit to all of the assets and liabilities of the reporting unit. The carrying value in excess of the implied fair value is recognized as goodwill impairment. Under the new standard, goodwill impairment is recognized based on Step 1 of the current guidance, which calculates the carrying value in excess of the reporting unit’s fair value. The new guidance is required to be applied on a prospective basis and as such, Autodesk will use the simplified test in its annual fourth fiscal quarter testing or more often if circumstances indicate a potential impairment may exist, or if events have affected the composition of reporting units. Autodesk does not believe ASU 2017-04 will have a material impact on its consolidated financial statements. Recently issued accounting standards but not yet adopted In August 2017, FASB issued Accounting Standards Update No. 2017-12 ("ASU 2017-12"), "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities." The targeted amendments help simplify certain aspects of hedge accounting and result in a more accurate portrayal of the economics of an entity’s risk management activities in its financial statements. For cash flow and net investment hedges as of the adoption date, the guidance requires a modified retrospective approach. The amended presentation and disclosure guidance is required only prospectively. The amendments are effective for Autodesk's fiscal year beginning February 1, 2019, with early adoption permitted. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption. In February 2017, FASB issued Accounting Standards Update No. 2017-05 ("ASU 2017-05"), "Other Income– Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets." The ASU, among other things, clarifies the scope of the derecognition of nonfinancial assets, the definition of in substance financial assets, and impacts the accounting for partial sales of nonfinancial assets by requiring full gain recognition upon the sale. The amendments are effective for Autodesk's fiscal year beginning February 1, 2018. The guidance may be applied retrospectively for all periods presented or retrospectively with a cumulative-effect adjustment at the date of adoption. The effect of the implementation will depend upon the nature of the Company's future acquisitions or dispositions, if any. The adoption of the guidance would not have had a material impact on acquisitions prior to the current period and on the Company's consolidated statements of financial condition and results of operations. In January 2017, FASB issued Accounting Standards Update No. 2017-01 ("ASU 2017-01"), "Business Combinations: Clarifying the Definition of a Business" which provides a more robust framework to use in determining when a set of assets and activities is considered a business. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2018. The new guidance is required to be applied on a prospective basis. The effect of the implementation will depend upon the nature of the Company's future acquisitions, if any. In October 2016, FASB issued Accounting Standards Update No. 2016-16 ("ASU 2016-16"), “Income Taxes: Intra-Entity Transfers of Assets Other than Inventory” which requires that entities recognize the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2018. The new guidance is required to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Autodesk is currently evaluating the accounting and disclosure requirements of the standard. Furthermore, the actual impact of implementation will largely depend on future intra-entity asset transfers, if any. In June 2016, FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") regarding ASC Topic 326, "Financial Instruments - Credit Losses," which modifies the measurement of expected credit losses of certain financial instruments. Autodesk plans to adopt ASU 2016-13 as of the effective date which represents Autodesk’s fiscal year beginning February 1, 2020. Autodesk does not believe the ASU will have a material impact on its consolidated financial statements. In February 2016, FASB issued Accounting Standards Update No. 2016-02 ("ASU 2016-02") regarding ASC Topic 842, "Leases." The amendments in this ASU require balance sheet recognition of lease assets and lease liabilities by lessees for leases classified as operating leases, with an optional policy election to not recognize lease assets and lease liabilities for leases with a term of 12 months or less. The amendments also require new disclosures, including qualitative and quantitative requirements, providing additional information about the amounts recorded in the financial statements. Autodesk plans to adopt ASU 2016-02 in Autodesk’s fiscal year beginning February 1, 2019. The amendments require a modified retrospective approach with optional practical expedients. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption. In January 2016, FASB issued Accounting Standards Update No. 2016-01 ("ASU 2016-01") regarding ASC Topic 825-10, "Financial Instruments - Overall." The amendments address certain aspects of recognition, measurement, presentation, and disclosure of financial instruments, and require equity securities to be measured at fair value with changes in fair value recognized through net income. The amendments also simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment for impairment quarterly at each reporting period. The amendments in ASU 2016-01 will be effective for Autodesk's fiscal year beginning February 1, 2018. An entity should apply the amendments by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption, with prospective adoption of the amendments related to equity securities without readily determinable fair values existing as of the date of adoption. Autodesk does not believe ASU 2016-01 will have a material impact on its consolidated financial statements. In May 2014, FASB issued Accounting Standards Update No. 2014-09 (regarding ASC Topic 606, “Revenue from Contracts with Customers.” ASU 2014-09 provides principles for recognizing revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, FASB issued Accounting Standards Update No. 2015-14 to defer the effective date by one year with early adoption permitted as of the original effective date. In addition, FASB issued Accounting Standards Update No. 2016-08, Accounting Standards Update No. 2016-10, Accounting Standards Update No. 2016-12, and Accounting Standard Update No. 2016-20 in March 2016, April 2016, May 2016, and December 2016, respectively, to help provide interpretive clarifications on the new guidance in ASC Topic 606. Autodesk currently plans to adopt ASU 2014-09 as of February 1, 2018, using the modified retrospective transition method. In terms of Autodesk's evaluation efforts, the Company has assigned internal resources in addition to the engagement of third party service providers to assist in the evaluation. The Company's preliminary assessment is that there should be no material change in the timing and amount of the recognition of revenue for the majority of the Company's product subscription offerings and enterprise arrangements. This preliminary assessment is based on the Company's analysis that the related software and cloud services in a majority of the product subscription and enterprise arrangements are not distinct in the context of the contract as they are considered highly interrelated and represent a single combined performance obligation that should be recognized over time. Due to the complexity of certain contracts, the actual revenue recognition treatment required under the new standard for these arrangements may be dependent on contract-specific terms and vary in some instances. A limited number of Autodesk's product subscriptions do not incorporate substantial cloud services, and under ASU 2014-09 will be recognized as distinct license and service performance obligations. Revenue allocated to the licenses in these offerings will be recognized at a point in time instead of over the contract term. While we are still evaluating, Autodesk believes the impact of the change to timing of revenue recognition for these limited offerings, and other revenue streams that Autodesk is currently evaluating, may have a material balance sheet impact on the adoption date with the application of the modified retrospective transition method. It is not expected to have a material impact to reported revenue in subsequent reporting periods. Another significant provision under ASU 2014-09 includes the capitalization and amortization of costs associated with obtaining a contract, such as sales commission. The Company expects there to be a material balance sheet impact at the period of adoption capturing the sales commission capitalization and is currently evaluating the magnitude at implementation. Furthermore, the Company has made and will continue to make investments in systems and processes to enable timely and accurate reporting under the new standard. The Company currently expects that necessary operational and internal control structural changes will be implemented prior to the adoption date.

Basis of Presentation (Tables)

9 Months Ended

Oct. 31, 2017

Schedule of Changes in Revenue and Cost of Revenue



	Three Months Ended October 31, 2016							Nine Months Ended October 31, 2016
	Previously Reported		Change in Presentation Reclassification			Current Presentation		Previously Reported		Change in Presentation Reclassification			Current Presentation
Net revenue:
Maintenance (1)	N/A		$	273.2		$	273.2	N/A		$	835.1		$	835.1
Subscription	$	319.5	(207.1		)	112.4		$	967.5	(667.8		)	299.7
License and other	170.1		(66.1		)	104.0		584.7		(167.3		)	417.4
Total	$	489.6	$	—		$	489.6	$	1,552.2	$	—		$	1,552.2

Cost of revenue:
Maintenance and subscription (2)	$	35.1	$	11.7		$	46.8	$	113.1	$	27.1		$	140.2
License and other	46.4		(22.1		)	24.3		145.9		(59.1		)	86.8
Amortization of developed technology (1)	N/A		10.4			10.4		N/A		32.0			32.0
Total	$	81.5	$	—		$	81.5	$	259.0	$	—		$	259.0

_______________


(1)	These lines were not previously reported in the Condensed Consolidated Statement of Operations.

(2)

Previously, titled "Subscription."

Financial Instruments (Tables)

9 Months Ended

Oct. 31, 2017

Cost And Fair Value Of Financial Instruments Disclosure



			October 31, 2017
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value			Level 1		Level 2			Level 3
Cash equivalents (1):
	Certificates of deposit		63.1		—		—			63.1			63.1		—			—
	Corporate debt securities		8.0		—		—			8.0			8.0		—			—
	Commercial paper		166.5		—		—			166.5			—		166.5			—
	Custody cash deposit		0.9		—		—			0.9			0.9		—			—
	Money market funds		144.8		—		—			144.8			—		144.8			—
	U.S. government securities		250.0		—		—			250.0			250.0		—			—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	7.5		—		—			7.5			7.5		—			—
		Asset backed securities	30.4		—		—			30.4			—		30.4			—
		Certificates of deposit	4.0		—		—			4.0			4.0		—			—
		Commercial paper	31.3		—		—			31.3			—		31.3			—
		Corporate debt securities	218.7		0.1		(0.1		)	218.7			218.7		—			—
		Municipal bonds	15.5				—			15.5			15.5		—			—
		Sovereign debt	6.0		—		—			6.0			—		6.0			—
		U.S. government securities	58.8		—		—			58.8			58.8		—			—
	Short-term trading securities
		Mutual funds	49.1		7.4		—			56.5			56.5		—			—
	Long-term available-for-sale
		Agency bonds	12.2		—		—			12.2			12.2		—			—
		Asset backed securities	60.8		—		(0.1		)	60.7			—		60.7			—
		Corporate debt securities	143.1		0.2		(0.1		)	143.2			143.2		—			—
		Municipal bonds	12.8		—		(0.1		)	12.7			12.7		—			—
		Sovereign debt	2.7		—		—			2.7			—		2.7			—
		U.S. government securities	32.9		—		(0.1		)	32.8			32.8		—			—
Convertible debt securities (2)			8.4		0.6		—			9.0			—		—			9.0
Derivative contract assets (3)			2.4		7.2		(0.5		)	9.1			—		7.1			2.0
Derivative contract liabilities (4)			—		—		(8.9		)	(8.9		)	—		(8.9		)	—
		Total	$	1,329.9	$	15.5	$	(9.9	)	$	1,335.5		$	883.9	$	440.6		$	11.0

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Condensed Consolidated Balance Sheets.


(2)	Considered “available-for-sale” and included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets” or “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(4)	Included in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.



			January 31, 2017
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value			Level 1		Level 2			Level 3
Cash equivalents (1):
	Agency bonds		$	6.0	$	—	$	—		$	6.0		$	6.0	$	—		$	—
	Certificates of deposit		63.1		—		—			63.1			63.1		—			—
	Commercial paper		207.4		—		—			207.4			—		207.4			—
	Corporate debt securities		40.2		—		—			40.2			40.2		—			—
	Custody cash deposit		3.2		—		—			3.2			3.2		—			—
	Money Market funds		256.5		—		—			256.5			—		256.5			—
	Municipal bonds		5.0		—		—			5.0			5.0		—			—
	Sovereign debt		15.0		—		—			15.0			—		15.0			—
	U.S. government securities		309.5		—		—			309.5			309.5		—			—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	13.2		—					13.2			13.2		—			—
		Asset backed securities	19.6		—		—			19.6			—		19.6			—
		Certificates of deposit	157.3		—		—			157.3			157.3		—			—
		Commercial paper	109.2		—		—			109.2			—		109.2			—
		Corporate debt securities	234.7		—		(0.2		)	234.5			234.5		—			—
		Municipal bonds	43.4		—		—			43.4			43.4		—			—
		Sovereign debt	30.0		—		—			30.0			—		30.0			—
		U.S. government securities	32.3		—		—			32.3			32.3		—			—
	Short-term trading securities
		Mutual funds	44.8		2.5		—			47.3			47.3		—			—
	Long-term available-for-sale
		Agency bonds	7.1		—		—			7.1			7.1		—			—
		Asset backed securities	65.8		0.1		—			65.9			—		65.9			—
		Corporate debt securities	172.1		0.1		(0.1		)	172.1			172.1		—			—
		Municipal bonds	10.7		—		—			10.7			10.7		—			—
		Sovereign debt	1.5		—		—			1.5			—		1.5			—
		U.S. government securities	48.8		0.1		—			48.9			48.9		—			—
Convertible debt securities (2)			4.9		2.3		(1.6		)	5.6			—		—			5.6
Derivative contract assets (3)			2.2		12.3		(1.3		)	13.2			—		11.9			1.3
Derivative contract liabilities (4)			—		—		(10.4		)	(10.4		)	—		(10.4		)	—
		Total	$	1,903.5	$	17.4	$	(13.6	)	$	1,907.3		$	1,193.8	$	706.6		$	6.9

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Condensed Consolidated Balance Sheets.


(2)	Considered “available-for-sale” and included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets,” “Other assets,” or “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.

(4)

Included in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.

Fair Value, Assets Measured on Recurring Basis

A reconciliation of the change in Autodesk’s Level 3 items for the nine months ended October 31, 2017 follows:



	Fair Value Measurements Using Significant Unobservable Inputs
	(Level 3)
		Derivative Contracts			Convertible Debt Securities			Total
Balances, January 31, 2017		$	1.3		$	5.6		$	6.9
Purchases		1.1			5.9			7.0
Losses included in earnings		(0.4		)	(2.4		)	(2.8		)
Losses included in OCI		—			(0.1		)	(0.1		)
Balances, October 31, 2017		$	2.0		$	9.0		$	11.0

Available-for-sale Securities

The following table summarizes the estimated fair value of Autodesk's “available-for-sale securities” classified by the contractual maturity date of the security:



	October 31, 2017
	Cost		Fair Value
Due within 1 year	$	377.4	$	377.9
Due in 1 year through 5 years	259.4		259.3
Due in 5 years through 10 years	5.7		5.7
Due after 10 years	2.6		2.6
Total	$	645.1	$	645.5

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The fair values of derivative instruments in Autodesk’s Condensed Consolidated Balance Sheets were as follows as of October 31, 2017 and January 31, 2017:



	Balance Sheet Location	Fair Value at
	Balance Sheet Location	October 31, 2017		January 31, 2017
Derivative Assets
Foreign currency contracts designated as cash flow hedges	Prepaid expenses and other current assets	$	4.4	$	10.1
Derivatives not designated as hedging instruments	Prepaid expenses and other current assets and Other assets	4.7		3.2
Total derivative assets		$	9.1	$	13.3
Derivative Liabilities
Foreign currency contracts designated as cash flow hedges	Other accrued liabilities	$	8.5	$	4.5
Derivatives not designated as hedging instruments	Other accrued liabilities	0.4		6.0
Total derivative liabilities		$	8.9	$	10.5

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance



	Foreign Currency Contracts
	Three Months Ended October 31,					Nine Months Ended October 31,
	2017		2016			2017			2016
Amount of gain (loss) recognized in accumulated other comprehensive (loss) income on derivatives (effective portion)	$	2.9	$	1.8		$	(8.5	)	$	(3.1	)
Amount and location of gain (loss) reclassified from accumulated other comprehensive (loss) income into (loss) income (effective portion)
Net revenue	$	2.4	$	1.0		$	7.2		$	8.4
Operating expenses	2.9		1.5			(0.3		)	0.2
Total	$	5.3	$	2.5		$	6.9		$	8.6
Amount and location of gain (loss) recognized in (loss) income on derivatives (ineffective portion and amount excluded from effectiveness testing)
Interest and other expense, net	$	—	$	(0.1	)	$	(0.1	)	$	(0.5	)



	Three Months Ended October 31,					Nine Months Ended October 31,
	2017		2016			2017			2016
Amount and location of gain (loss) recognized in (loss) income on derivatives
Interest and other expense, net	$	0.9	$	(1.4	)	$	(7.4	)	$	(12.3	)

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

Stock-based Compensation Expense (Tables)

9 Months Ended

Oct. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of restricted stock activity for the nine months ended October 31, 2017 is as follows:



	Unvested Restricted Stock Units		Weighted average grant date fair value per share
	(in thousands)
Unvested restricted stock units at January 31, 2017	7,622.4		$	60.13
Granted	2,036.6		106.45
Vested	(3,156.6	)	57.21
Canceled/Forfeited	(534.3	)	67.05
Performance Adjustment (1)	24.7		61.79
Unvested restricted stock units at October 31, 2017	5,992.8		$	78.94

_______________


(1)	Based on Autodesk's financial results and relative total stockholder return for the fiscal 2017 performance period. The performance stock units were attained at rates ranging from 99.7% to 114.7% of the target award.

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity

A summary of the ESPP activity for three and nine months ended October 31, 2017 and 2016 is as follows:



	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
Issued shares	0.9		1.1		2.0		2.3
Average price of issued shares	$	39.92	$	37.36	$	39.03	$	36.99
Weighted average grant date fair value of awards granted under the ESPP (1)	$	33.04	$	20.75	$	32.41	$	19.20

_______________

(1)

Calculated as of the award grant date using the Black-Scholes Merton (“BSM") option pricing model.

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The following table summarizes stock-based compensation expense for the three and nine months ended October 31, 2017 and 2016, respectively, as follows:



	Three Months Ended October 31,					Nine Months Ended October 31,
	2017			2016		2017			2016
Cost of maintenance and subscription revenue (1)	$	2.8		$	2.2	$	8.5		$	6.2
Cost of license and other revenue (1)	1.0			1.3		3.1			4.1
Marketing and sales	27.7			24.2		80.1			69.0
Research and development	20.1			20.9		61.7			60.0
General and administrative	13.5			8.0		46.1			23.2
Stock-based compensation expense related to stock awards and ESPP purchases	65.1			56.6		199.5			162.5
Tax benefit	(1.3		)	—		(1.6		)	—
Stock-based compensation expense related to stock awards and ESPP purchases, net of tax	$	63.8		$	56.6	$	197.9		$	162.5

_______________


(1)	Prior periods have been adjusted to conform with the current period's presentation. See Note 1, "Basis of Presentation," for additional information.

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

Autodesk uses the following assumptions to estimate the fair value of stock-based awards:



	Three Months Ended October 31, 2017		Three Months Ended October 31, 2016
	Performance Stock Unit (1)	ESPP	Performance Stock Unit (1)	ESPP
Range of expected volatilities	N/A	31.7 - 33.4%	N/A	31.0 - 33.9%
Range of expected lives (in years)	N/A	0.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	N/A	—%	N/A	—%
Range of risk-free interest rates	N/A	1.2 - 1.4%	N/A	0.5 - 0.8%
	Nine Months Ended October 31, 2017		Nine Months Ended October 31, 2016
	Performance Stock Unit	ESPP	Performance Stock Unit	ESPP
Range of expected volatilities	31.8%	31.4 - 33.7%	38.4 - 38.6%	30.0 - 40.2%
Range of expected lives (in years)	N/A	0.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	—%	—%	—%	—%
Range of risk-free interest rates	1.0 - 1.2%	0.9 - 1.4%	0.6 - 0.7%	0.5 - 0.9%

_______________


(1)	Autodesk did not grant PSUs that were subject to market conditions in the three months ended October 31, 2017 or 2016.

Other Intangible Assets, Net (Tables)

9 Months Ended

Oct. 31, 2017

Schedule of Finite-Lived Intangible Assets

Other intangible assets including developed technologies, customer relationships, trade names, patents, user lists and the related accumulated amortization were as follows:



	October 31, 2017			January 31, 2017
Developed technologies, at cost	$	577.0		$	583.6
Customer relationships, trade names, patents, and user lists, at cost (1)	367.1			375.9
Other intangible assets, at cost (2)	944.1			959.5
Less: Accumulated amortization	(882.5		)	(862.0		)
Other intangible assets, net	$	61.6		$	97.5

_______________


(1)	Included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(2)	Includes the effects of foreign currency translation.

Goodwill (Tables)

9 Months Ended

Oct. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table summarizes the changes in the carrying amount of goodwill for the nine months ended October 31, 2017:



Balance as of January 31, 2017	$	1,710.3
Less: accumulated impairment losses as of January 31, 2017	(149.2		)
Net balance as of January 31, 2017	1,561.1
Additions arising from acquisitions during the period	—
Effect of foreign currency translation, purchase accounting adjustments, and other during the period	27.6
Balance as of October 31, 2017	$	1,588.7

Computer Equipment, Software, Furniture and Leasehold Improvements, Net (Tables)

9 Months Ended

Oct. 31, 2017

Property, Plant and Equipment

Computer equipment, software, furniture, leasehold improvements and the related accumulated depreciation were as follows:



	October 31, 2017			January 31, 2017
Computer hardware, at cost	$	210.8		$	206.1
Computer software, at cost	70.5			73.5
Leasehold improvements, land and buildings, at cost	221.9			206.3
Furniture and equipment, at cost	61.9			58.2
	565.1			544.1
Less: Accumulated depreciation	(417.0		)	(385.5		)
Computer software, hardware, leasehold improvements, furniture and equipment, net	$	148.1		$	158.6

Restructuring charges and other facility exit costs, net (Tables)

9 Months Ended

Oct. 31, 2017

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Related Costs

The following table sets forth the restructuring charges and other lease termination exit costs during the nine months ended October 31, 2017:



	Balances, January 31, 2017		Additions		Payments			Adjustments (1)			Balances, October 31, 2017
Fiscal 2017 Plan
Employee termination costs	$	1.1	$	0.1	$	(1.4	)	$	0.2		$	—
Lease termination and other exit costs	1.9		0.1		(1.4		)	(0.3		)	0.3
Other Lease Termination Costs
Lease termination costs	4.5		0.3		(2.3		)	(0.2		)	2.3
Total	$	7.5	$	0.5	$	(5.1	)	$	(0.3	)	$	2.6
Current portion (2)	$	5.9									$	2.4
Non-current portion (2)	1.6										0.2
Total	$	7.5									$	2.6

____________________


(1)	Adjustments primarily include the impact from a change in sublease assumptions related to certain lease terminations.

(2)

The current and non-current portions of the reserve are recorded in the Condensed Consolidated Balance Sheets under “Other accrued liabilities” and “Other liabilities,” respectively.

Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Oct. 31, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss, net of taxes, consisted of the following at October 31, 2017:



	Net Unrealized Gains (Losses) on Derivative Instruments			Net Unrealized Gains (Losses) on Available-for-Sale Securities			Defined Benefit Pension Components			Foreign Currency Translation Adjustments			Total
Balances, January 31, 2017	$	14.6		$	1.5		$	(33.8	)	$	(160.8	)	$	(178.5	)
Other comprehensive (loss) income before reclassifications	(10.2		)	0.7			(0.1		)	38.8			29.2
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss	(6.9		)	—			0.1			0.1			(6.7		)
Tax effects	1.7			(0.3		)	—			(0.9		)	0.5
Net current period other comprehensive (loss) income	(15.4		)	0.4			—			38.0			23.0
Balances, October 31, 2017	$	(0.8	)	$	1.9		$	(33.8	)	$	(122.8	)	$	(155.5	)

Net Loss Per Share (Tables)

9 Months Ended

Oct. 31, 2017

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

The following table sets forth the computation of the numerators and denominators used in the basic and diluted net loss per share amounts:



	Three Months Ended October 31,						Nine Months Ended October 31,
	2017			2016			2017			2016
Numerator:
Net loss	$	(119.8	)	$	(142.8	)	$	(393.4	)	$	(408.7	)
Denominator:
Denominator for basic net loss per share—weighted average shares	219.6			222.3			219.7			223.3
Effect of dilutive securities (1)	—			—			—			—
Denominator for dilutive net loss per share	219.6			222.3			219.7			223.3
Basic net loss per share	$	(0.55	)	$	(0.64	)	$	(1.79	)	$	(1.83	)
Diluted net loss per share	$	(0.55	)	$	(0.64	)	$	(1.79	)	$	(1.83	)

____________________

(1)

Segment, Geographic and Product Family Information (Tables)

9 Months Ended

Oct. 31, 2017

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area

Information regarding Autodesk’s revenue by geographic area and product family is as follows:



	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
Net revenue by geographic area:
Americas
U.S.	$	182.4	$	182.2	$	546.8	$	562.1
Other Americas	32.2		31.1		91.9		99.0
Total Americas	214.6		213.3		638.7		661.1
Europe, Middle East and Africa	205.4		191.0		594.4		614.1
Asia Pacific	95.3		85.3		269.7		277.0
Total net revenue	$	515.3	$	489.6	$	1,502.8	$	1,552.2

Net revenue by product family:
Architecture, Engineering and Construction	$	215.4	$	212.3	$	628.7	$	684.4
Manufacturing	146.9		146.6		436.0		481.5
AutoCAD and AutoCAD LT	102.7		80.1		290.7		239.1
Media and Entertainment	37.7		34.2		112.1		103.6
Other	12.6		16.4		35.3		43.6
	$	515.3	$	489.6	$	1,502.8	$	1,552.2

Subsequent Events (Tables)

9 Months Ended

Oct. 31, 2017

Schedule of Expected Restructuring Costs

The Company expects to expense these pre-tax charges in the following periods:



Fiscal Quarter	Approximate pre-tax restructuring charge (in millions)
Q4 FY18 (ending January 31, 2018)	$91 - $100
Q1 FY19 (ending April 30, 2018)	$21 - $24
Q2 FY19 (ending July 31, 2018)	$14 - $15
Q3 FY19 (ending October 31, 2018)	$8 - $9
Q4 FY19 (ending January 31, 2019)	$1

Basis of Presentation Revenue Reclassification (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Net revenue:
Maintenance	$ 244.4	$ 273.2	$ 769.8	$ 835.1
Subscription	231.1	112.4	600.6	299.7
License and other	39.8	104.0	132.4	417.4
Total net revenue	515.3	489.6	1,502.8	1,552.2
Cost of revenue:
Maintenance and subscription	53.9	46.8	161.6	140.2
License and other	19.6	24.3	56.0	86.8
Amortization of developed technology	4.0	10.4	12.7	32.0
Total cost of revenue	$ 77.5	81.5	$ 230.3	259.0
Previously Reported
Net revenue:
Subscription		319.5		967.5
License and other		170.1		584.7
Total net revenue		489.6		1,552.2
Cost of revenue:
Maintenance and subscription		35.1		113.1
License and other		46.4		145.9
Total cost of revenue		81.5		259.0
Change in Presentation Reclassification
Net revenue:
Maintenance		273.2		835.1
Subscription		(207.1)		(667.8)
License and other		(66.1)		(167.3)
Total net revenue		0.0		0.0
Cost of revenue:
Maintenance and subscription		11.7		27.1
License and other		(22.1)		(59.1)
Amortization of developed technology		10.4		32.0
Total cost of revenue		$ 0.0		$ 0.0

Concentration of Credit Risk Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016	Jan. 31, 2017
Concentration Risk [Line Items]
Unsecured revolving credit facility	$ 400,000,000.0		$ 400,000,000.0
Tech Data \| Net Revenue
Concentration Risk [Line Items]
Concentration risk	32.00%	31.00%	31.00%	30.00%
Tech Data \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk			28.00%		20.00%

Financial Instruments Cost and Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Oct. 31, 2017	Jan. 31, 2017	Oct. 31, 2016	Jan. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents	$ 1,025.2	$ 1,213.1	$ 1,436.5	$ 1,353.0
Derivative contract assets, Amortized Cost	2.4	2.2
Derivative contract assets, Gross unrealized gains	7.2	12.3
Derivative contract assets, Gross unrealized losses	(0.5)	(1.3)
Derivative contract assets	9.1	13.2
Derivative contract liabilities, Amortized Cost	0.0	0.0
Derivative contract liabilities, Gross unrealized gains	0.0	0.0
Derivative contract liabilities, Gross unrealized losses	(8.9)	(10.4)
Derivative contract liabilities	(8.9)	(10.4)
Amortized Cost	1,329.9	1,903.5
Gross unrealized gains	15.5	17.4
Gross unrealized losses	(9.9)	(13.6)
Fair Value	1,335.5	1,907.3
Marketable Securities, Current
Schedule of Available-for-sale Securities [Line Items]
Mutual funds, Amortized Cost	49.1	44.8
Mutual funds, Gross unrealized gains	7.4	2.5
Mutual funds, Gross unrealized losses	0.0	0.0
Mutual funds, Fair Value	56.5	47.3
Marketable Securities, Current \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	7.5	13.2
Marketable securities, Gross unrealized gains	0.0	0.0
Marketable securities, Gross unrealized losses	0.0
Marketable securities, Fair Value	7.5	13.2
Marketable Securities, Current \| Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	30.4	19.6
Marketable securities, Gross unrealized gains	0.0	0.0
Marketable securities, Gross unrealized losses	0.0	0.0
Marketable securities, Fair Value	30.4	19.6
Marketable Securities, Current \| Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	4.0	157.3
Marketable securities, Gross unrealized gains	0.0	0.0
Marketable securities, Gross unrealized losses	0.0	0.0
Marketable securities, Fair Value	4.0	157.3
Marketable Securities, Current \| Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	31.3	109.2
Marketable securities, Gross unrealized gains	0.0	0.0
Marketable securities, Gross unrealized losses	0.0	0.0
Marketable securities, Fair Value	31.3	109.2
Marketable Securities, Current \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	218.7	234.7
Marketable securities, Gross unrealized gains	0.1	0.0
Marketable securities, Gross unrealized losses	(0.1)	(0.2)
Marketable securities, Fair Value	218.7	234.5
Marketable Securities, Current \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	15.5	43.4
Marketable securities, Gross unrealized gains		0.0
Marketable securities, Gross unrealized losses	0.0	0.0
Marketable securities, Fair Value	15.5	43.4
Marketable Securities, Current \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	6.0	30.0
Marketable securities, Gross unrealized gains	0.0	0.0
Marketable securities, Gross unrealized losses	0.0	0.0
Marketable securities, Fair Value	6.0	30.0
Marketable Securities, Current \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	58.8	32.3
Marketable securities, Gross unrealized gains	0.0	0.0
Marketable securities, Gross unrealized losses	0.0	0.0
Marketable securities, Fair Value	58.8	32.3
Marketable Securities, Noncurrent \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	12.2	7.1
Marketable securities, Gross unrealized gains	0.0	0.0
Marketable securities, Gross unrealized losses	0.0	0.0
Marketable securities, Fair Value	12.2	7.1
Marketable Securities, Noncurrent \| Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	60.8	65.8
Marketable securities, Gross unrealized gains	0.0	0.1
Marketable securities, Gross unrealized losses	(0.1)	0.0
Marketable securities, Fair Value	60.7	65.9
Marketable Securities, Noncurrent \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	143.1	172.1
Marketable securities, Gross unrealized gains	0.2	0.1
Marketable securities, Gross unrealized losses	(0.1)	(0.1)
Marketable securities, Fair Value	143.2	172.1
Marketable Securities, Noncurrent \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	12.8	10.7
Marketable securities, Gross unrealized gains	0.0	0.0
Marketable securities, Gross unrealized losses	(0.1)	0.0
Marketable securities, Fair Value	12.7	10.7
Marketable Securities, Noncurrent \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	2.7	1.5
Marketable securities, Gross unrealized gains	0.0	0.0
Marketable securities, Gross unrealized losses	0.0	0.0
Marketable securities, Fair Value	2.7	1.5
Marketable Securities, Noncurrent \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	32.9	48.8
Marketable securities, Gross unrealized gains	0.0	0.1
Marketable securities, Gross unrealized losses	(0.1)	0.0
Marketable securities, Fair Value	32.8	48.9
Other asset
Schedule of Available-for-sale Securities [Line Items]
Convertible debt securities, Amortized Cost		4.9
Convertible debt securities, Gross unrealized gains		2.3
Convertible debt securities, Gross unrealized losses		(1.6)
Convertible debt securities, Fair Value		5.6
Other asset \| Convertible debt securities
Schedule of Available-for-sale Securities [Line Items]
Convertible debt securities, Amortized Cost	8.4
Convertible debt securities, Gross unrealized gains	0.6
Convertible debt securities, Gross unrealized losses	0.0
Convertible debt securities, Fair Value	9.0
Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents		6.0
Cash equivalents, Fair Value		6.0
Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents	63.1	63.1
Cash equivalents, Fair Value	63.1	63.1
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents	8.0	40.2
Cash equivalents, Fair Value	8.0	40.2
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents	166.5	207.4
Cash equivalents, Fair Value	166.5	207.4
Custody cash deposit
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents	0.9	3.2
Cash equivalents, Fair Value	0.9	3.2
Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents		5.0
Cash equivalents, Fair Value		5.0
Money Market funds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents	144.8	256.5
Cash equivalents, Fair Value	144.8	256.5
Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents		15.0
Cash equivalents, Fair Value		15.0
U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents	250.0	309.5
Cash equivalents, Fair Value	250.0	309.5
Level 1
Schedule of Available-for-sale Securities [Line Items]
Derivative contract assets	0.0	0.0
Derivative contract liabilities	0.0	0.0
Fair Value	883.9	1,193.8
Level 1 \| Marketable Securities, Current
Schedule of Available-for-sale Securities [Line Items]
Mutual funds, Fair Value	56.5	47.3
Level 1 \| Marketable Securities, Current \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	7.5	13.2
Level 1 \| Marketable Securities, Current \| Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 1 \| Marketable Securities, Current \| Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	4.0	157.3
Level 1 \| Marketable Securities, Current \| Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 1 \| Marketable Securities, Current \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	218.7	234.5
Level 1 \| Marketable Securities, Current \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	15.5	43.4
Level 1 \| Marketable Securities, Current \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 1 \| Marketable Securities, Current \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	58.8	32.3
Level 1 \| Marketable Securities, Noncurrent \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	12.2	7.1
Level 1 \| Marketable Securities, Noncurrent \| Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 1 \| Marketable Securities, Noncurrent \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	143.2	172.1
Level 1 \| Marketable Securities, Noncurrent \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	12.7	10.7
Level 1 \| Marketable Securities, Noncurrent \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 1 \| Marketable Securities, Noncurrent \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	32.8	48.9
Level 1 \| Other asset
Schedule of Available-for-sale Securities [Line Items]
Convertible debt securities, Fair Value		0.0
Level 1 \| Other asset \| Convertible debt securities
Schedule of Available-for-sale Securities [Line Items]
Convertible debt securities, Fair Value	0.0
Level 1 \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value		6.0
Level 1 \| Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	63.1	63.1
Level 1 \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	8.0	40.2
Level 1 \| Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 1 \| Custody cash deposit
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.9	3.2
Level 1 \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value		5.0
Level 1 \| Money Market funds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 1 \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value		0.0
Level 1 \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	250.0	309.5
Level 2
Schedule of Available-for-sale Securities [Line Items]
Derivative contract assets	7.1	11.9
Derivative contract liabilities	(8.9)	(10.4)
Fair Value	440.6	706.6
Level 2 \| Marketable Securities, Current
Schedule of Available-for-sale Securities [Line Items]
Mutual funds, Fair Value	0.0	0.0
Level 2 \| Marketable Securities, Current \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 2 \| Marketable Securities, Current \| Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	30.4	19.6
Level 2 \| Marketable Securities, Current \| Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 2 \| Marketable Securities, Current \| Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	31.3	109.2
Level 2 \| Marketable Securities, Current \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 2 \| Marketable Securities, Current \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 2 \| Marketable Securities, Current \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	6.0	30.0
Level 2 \| Marketable Securities, Current \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 2 \| Marketable Securities, Noncurrent \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 2 \| Marketable Securities, Noncurrent \| Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	60.7	65.9
Level 2 \| Marketable Securities, Noncurrent \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 2 \| Marketable Securities, Noncurrent \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 2 \| Marketable Securities, Noncurrent \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	2.7	1.5
Level 2 \| Marketable Securities, Noncurrent \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 2 \| Other asset
Schedule of Available-for-sale Securities [Line Items]
Convertible debt securities, Fair Value		0.0
Level 2 \| Other asset \| Convertible debt securities
Schedule of Available-for-sale Securities [Line Items]
Convertible debt securities, Fair Value	0.0
Level 2 \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value		0.0
Level 2 \| Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 2 \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 2 \| Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	166.5	207.4
Level 2 \| Custody cash deposit
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 2 \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value		0.0
Level 2 \| Money Market funds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	144.8	256.5
Level 2 \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value		15.0
Level 2 \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 3
Schedule of Available-for-sale Securities [Line Items]
Derivative contract assets	2.0	1.3
Derivative contract liabilities	0.0	0.0
Fair Value	11.0	6.9
Level 3 \| Marketable Securities, Current
Schedule of Available-for-sale Securities [Line Items]
Mutual funds, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Current \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Current \| Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Current \| Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Current \| Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Current \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Current \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Current \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Current \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Noncurrent \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Noncurrent \| Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Noncurrent \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Noncurrent \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Noncurrent \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Marketable Securities, Noncurrent \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Fair Value	0.0	0.0
Level 3 \| Other asset
Schedule of Available-for-sale Securities [Line Items]
Convertible debt securities, Fair Value		5.6
Level 3 \| Other asset \| Convertible debt securities
Schedule of Available-for-sale Securities [Line Items]
Convertible debt securities, Fair Value	9.0
Level 3 \| Agency bonds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value		0.0
Level 3 \| Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 3 \| Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 3 \| Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 3 \| Custody cash deposit
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 3 \| Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value		0.0
Level 3 \| Money Market funds
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	0.0	0.0
Level 3 \| Sovereign debt
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value		0.0
Level 3 \| U.S. government securities
Schedule of Available-for-sale Securities [Line Items]
Cash equivalents, Fair Value	$ 0.0	$ 0.0

Financial Instruments Reconciliation of the Change in Level 3 Items (Details) - Level 3 $ in Millions	9 Months Ended
	Oct. 31, 2017 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balances, January 31, 2017	$ 6.9
Purchases	7.0
Losses included in earnings	(2.8)
Losses included in OCI	(0.1)
Balances, October 31, 2017	11.0
Derivative Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balances, January 31, 2017	1.3
Purchases	1.1
Losses included in earnings	(0.4)
Losses included in OCI	0.0
Balances, October 31, 2017	2.0
Convertible Debt Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balances, January 31, 2017	5.6
Purchases	5.9
Losses included in earnings	(2.4)
Losses included in OCI	(0.1)
Balances, October 31, 2017	$ 9.0

Financial Instruments Contractual Maturities of Types of Securities (Details) $ in Millions	Oct. 31, 2017 USD ($)
Cost
Due within 1 year	$ 377.4
Due in 1 year through 5 years	259.4
Due in 5 years through 10 years	5.7
Due after 10 years	2.6
Total	645.1
Fair Value
Due within 1 year	377.9
Due in 1 year through 5 years	259.3
Due in 5 years through 10 years	5.7
Due after 10 years	2.6
Total	$ 645.5

Financial Instruments Available for Sale Securities Gain/Loss Activity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016	Jan. 31, 2017
Investments, All Other Investments [Abstract]
Securities in a continuous unrealized loss position for more than 12 months	$ 0		$ 0		$ 0
Cost method investments	116,200,000		116,200,000		$ 117,200,000
Other than temporary impairment losses, investments	$ 3,900,000	$ 0	8,000,000.0	$ 300,000
Gain (loss) from sale or redemption of available for sale securities			0	700,000
Proceeds from sale and maturity of marketable securities			$ 729,300,000	$ 1,557,300,000

Financial Instruments Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2017	Jan. 31, 2017
Derivatives, Fair Value [Line Items]
Net gain expected to be recognized in next 12 months	$ 0.8
Derivative Assets	9.1	$ 13.3
Derivative Liabilities	8.9	10.5
Designated as hedging instrument
Derivatives, Fair Value [Line Items]
Derivative, notional amount	613.6	369.4
Foreign currency contracts \| Designated as hedging instrument \| Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	4.4	10.1
Foreign currency contracts \| Designated as hedging instrument \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	8.5	4.5
Foreign currency contracts \| Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative, notional amount	189.0	270.6
Foreign currency contracts \| Derivatives not designated as hedging instruments \| Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	4.7	3.2
Foreign currency contracts \| Derivatives not designated as hedging instruments \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 0.4	$ 6.0
Minimum \| Foreign currency contracts
Derivatives, Fair Value [Line Items]
Derivative instrument, term	1 month
Maximum \| Foreign currency contracts
Derivatives, Fair Value [Line Items]
Derivative instrument, term	12 months

Financial Instruments Effects of Derivative Instruments on Condensed Consolidated Statements of Operations (Details) - Foreign currency contracts - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Designated as hedging instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in accumulated other comprehensive (loss) income on derivatives (effective portion)	$ 2.9	$ 1.8	$ (8.5)	$ (3.1)
Amount and location of gain (loss) reclassified from accumulated other comprehensive (loss) income into (loss) income (effective portion)	5.3	2.5	6.9	8.6
Designated as hedging instrument \| Net revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive (loss) income into (loss) income (effective portion)	2.4	1.0	7.2	8.4
Designated as hedging instrument \| Operating expenses
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive (loss) income into (loss) income (effective portion)	2.9	1.5	(0.3)	0.2
Designated as hedging instrument \| Interest and other expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of gain (loss) recognized in (loss) income on derivatives (ineffective portion and amount excluded from effectiveness testing)	0.0	(0.1)	(0.1)	(0.5)
Derivatives not designated as hedging instruments \| Interest and other expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of gain (loss) recognized in (loss) income on derivatives	$ 0.9	$ (1.4)	$ (7.4)	$ (12.3)

Stock-based Compensation Expense Summary of Restricted Stock Award and Restricted Stock Unit Activity (Details)	9 Months Ended
	Oct. 31, 2017 $ / shares shares
Restricted Stock Units (RSUs) and Performance Shares
Unvested Restricted Stock Units
Unvested restricted stock units, beginning balance (shares)	7,622,400
Granted (shares)	2,036,600
Vested (shares)	(3,156,600)
Canceled/Forfeited (shares)	(534,300)
Unvested restricted stock units, ending balance (shares)	5,992,800
Weighted average grant date fair value per share
Unvested restricted stock units, beginning balance (usd per share) \| $ / shares	$ 60.13
Granted (in usd per share) \| $ / shares	106.45
Vested (in usd per share) \| $ / shares	57.21
Canceled/Forfeited (in usd per share) \| $ / shares	67.05
Unvested restricted stock units, ending balance (usd per share) \| $ / shares	$ 78.94
Performance Stock Unit
Unvested Restricted Stock Units
Granted (shares)	200,000
Performance adjustment (shares)	24,700
Weighted average grant date fair value per share
Performance adjustment (in usd per share) \| $ / shares	$ 61.79
Minimum \| Restricted Stock Units (RSUs) and Performance Shares
Weighted average grant date fair value per share
Performance shares units payout	99.70%
Maximum \| Restricted Stock Units (RSUs) and Performance Shares
Weighted average grant date fair value per share
Performance shares units payout	114.70%

Stock-based Compensation Expense Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017 USD ($)	Oct. 31, 2016 USD ($)	Oct. 31, 2017 USD ($) period shares	Oct. 31, 2016 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 65.1	$ 56.6	$ 199.5	$ 162.5
Market capitalization			2,000.0
Restricted Stock Units (RSUs) and Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vested in period, fair value			$ 332.8	180.3
Awards granted in period (shares) \| shares			2,036,600
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted in period (shares) \| shares			1,800,000
Allocated share-based compensation expense	51.5	45.2	$ 153.5	125.5
Acceleration of eligible stock awards			$ 9.1
Performance Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted in period (shares) \| shares			200,000
Allocated share-based compensation expense	$ 7.1	$ 4.9	$ 27.7	$ 17.1
Acceleration of eligible stock awards			$ 7.5
Award vesting period			3 years
Employee Qualified Stock Purchase Plan 1998 ESP Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan maximum percentage of compensation to purchase shares by eligible participants			15.00%
Employee stock purchase plan minimum percentage of common stock fair value defined to purchase shares by eligible participants			85.00%
Employee stock purchase plan, number of exercise periods \| period			4
Employee stock purchase plan, term of exercise period			6 months
Employee stock purchase plan, term of offering period			24 months
Share-based Compensation Award, Tranche One \| Performance Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PSU annual vesting percentage			33.33%
Share-based Compensation Award, Tranche Two \| Performance Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PSU annual vesting percentage			33.33%
Share-based Compensation Award, Tranche Three \| Performance Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PSU annual vesting percentage			33.33%

Stock-based Compensation Expense Summary of ESPP Activity (Details) - Employee Stock - Employee Qualified Stock Purchase Plan 1998 ESP Plan - $ / shares shares in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issued shares	0.9	1.1	2.0	2.3
Average price of issued shares (in dollars per share)	$ 39.92	$ 37.36	$ 39.03	$ 36.99
Weighed average grant date fair value of awards granted under the ESPP (in dollars per share)	$ 33.04	$ 20.75	$ 32.41	$ 19.20

Stock-based Compensation Expense Stock Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and ESPP purchases	$ 65.1	$ 56.6	$ 199.5	$ 162.5
Tax benefit	(1.3)	0.0	(1.6)	0.0
Stock-based compensation expense related to stock awards and ESPP purchases, net of tax	63.8	56.6	197.9	162.5
Cost of maintenance and subscription revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and ESPP purchases	2.8	2.2	8.5	6.2
Cost of license and other revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and ESPP purchases	1.0	1.3	3.1	4.1
Marketing and sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and ESPP purchases	27.7	24.2	80.1	69.0
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and ESPP purchases	20.1	20.9	61.7	60.0
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and ESPP purchases	$ 13.5	$ 8.0	$ 46.1	$ 23.2

Stock-based Compensation Expense Assumption Used to Estimate the Fair Value of Stock-Based Awards (Details)	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Performance Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of expected volatilities			31.80%
Expected dividends			0.00%	0.00%
Performance Stock Unit \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of expected volatilities				38.40%
Range of risk-free interest rates			1.00%	0.60%
Performance Stock Unit \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of expected volatilities				38.60%
Range of risk-free interest rates			1.20%	0.70%
Employee Qualified Stock Purchase Plan 1998 ESP Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividends	0.00%	0.00%	0.00%	0.00%
Employee Qualified Stock Purchase Plan 1998 ESP Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of expected volatilities	31.70%	31.00%	31.40%	30.00%
Range of expected lives (in years)	6 months	6 months	6 months	6 months
Range of risk-free interest rates	1.20%	0.50%	0.90%	0.50%
Employee Qualified Stock Purchase Plan 1998 ESP Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of expected volatilities	33.40%	33.90%	33.70%	40.20%
Range of expected lives (in years)	2 years	2 years	2 years	2 years
Range of risk-free interest rates	1.40%	0.80%	1.40%	0.90%

Income Tax (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Income Tax (Narrative) (Details) - USD ($) $ in Millions	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 8.6	$ 13.5	$ 34.4	$ 53.1
(Loss) income before income taxes	(111.2)	$ (129.3)	(359.0)	$ (355.6)
Unrecognized tax benefits	291.4		291.4
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would impact effective tax rate	277.4		277.4
Valuation Allowance of Deferred Tax Assets
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would impact effective tax rate	$ 30.8		$ 30.8

Other Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Millions	Oct. 31, 2017	Jan. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, at cost	$ 944.1	$ 959.5
Less: Accumulated amortization	(882.5)	(862.0)
Other intangible assets, net	61.6	97.5
Developed technologies, at cost
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, at cost	577.0	583.6
Customer relationships, trade names, patents, and user lists, at cost
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, at cost	$ 367.1	$ 375.9

Goodwill Changes in the Carrying Amount of Goodwill (Details) - USD ($)	3 Months Ended	9 Months Ended
	Oct. 31, 2017	Oct. 31, 2017	Jan. 31, 2017
Goodwill [Roll Forward]
Goodwill gross, beginning of the period			$ 1,710,300,000
Less: accumulated impairment losses, beginning of the period			$ (149,200,000)
Goodwill net, beginning of the period		$ 1,561,100,000
Additions arising from acquisitions during the period		0
Effect of foreign currency translation, purchase accounting adjustments, and other during the period		27,600,000
Goodwill net, end of the period	$ 1,588,700,000	1,588,700,000
Goodwill impairment	$ 0	$ 0

Deferred Compensation Additional Information (Details) - USD ($) $ in Millions	Oct. 31, 2017	Jan. 31, 2017
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Marketable securities	$ 693.0
Rabbi Trust Member
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Deferred compensation liability	56.5	$ 47.3
Deferred compensation liability current	3.8	3.1
Deferred compensation liability non-current	$ 52.7	$ 44.2

Computer Equipment, Software, Furniture and Leasehold Improvements, Net (Details) - USD ($) $ in Millions	Oct. 31, 2017	Jan. 31, 2017
Property, Plant and Equipment [Line Items]
Computer software, hardware, leasehold improvements, furniture and equipment, gross	$ 565.1	$ 544.1
Less: Accumulated depreciation	(417.0)	(385.5)
Computer software, hardware, leasehold improvements, furniture and equipment, net	148.1	158.6
Computer hardware, at cost
Property, Plant and Equipment [Line Items]
Computer software, hardware, leasehold improvements, furniture and equipment, gross	210.8	206.1
Computer software, at cost
Property, Plant and Equipment [Line Items]
Computer software, hardware, leasehold improvements, furniture and equipment, gross	70.5	73.5
Leasehold improvements, land and buildings, at cost
Property, Plant and Equipment [Line Items]
Computer software, hardware, leasehold improvements, furniture and equipment, gross	221.9	206.3
Furniture and equipment, at cost
Property, Plant and Equipment [Line Items]
Computer software, hardware, leasehold improvements, furniture and equipment, gross	$ 61.9	$ 58.2

Borrowing Arrangements Additional Information (Details) - USD ($)		1 Months Ended			9 Months Ended
	Jul. 27, 2017	Jun. 30, 2017	Jun. 30, 2015	Dec. 31, 2012	Oct. 31, 2017
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 400,000,000.0
Line of credit facility, additional borrowings available					100,000,000.0
Line of credit facility, outstanding borrowings					$ 0
Senior Notes \| 3.5% Notes due June 15, 2027
Debt Instrument [Line Items]
Debt instrument, face amount		$ 500,000,000.0
Debt instrument, stated interest rate		3.50%
Debt instrument, unamortized discount		$ 3,100,000
Debt issuance costs, gross		4,900,000
Proceeds from debt, net of issuance costs		$ 492,000,000.0
Debt issuance redemption discount premium, percentage of principle amount					101.00%
Debt fair value					$ 502,700,000
Senior Notes \| Senior Notes 2017
Debt Instrument [Line Items]
Debt instrument, face amount				$ 400,000,000.0
Debt instrument, stated interest rate				1.95%
Redemption price	$ 400,900,000
Repayments of debt	$ 401,800,000
Senior Notes \| Senior Notes due 2020
Debt Instrument [Line Items]
Debt instrument, face amount			$ 450,000,000.0
Debt instrument, stated interest rate			3.125%
Senior Notes \| Senior Notes due 2025
Debt Instrument [Line Items]
Debt instrument, face amount			$ 300,000,000.0
Debt instrument, stated interest rate			4.375%
Senior Notes \| 2015 Senior Notes
Debt Instrument [Line Items]
Debt instrument, unamortized discount			$ 1,700,000
Debt issuance costs, gross			6,300,000
Proceeds from debt, net of issuance costs			$ 742,000,000.0
Debt fair value					781,900,000
Senior Notes \| Senior Notes 2022
Debt Instrument [Line Items]
Debt instrument, face amount				$ 350,000,000.0
Debt instrument, stated interest rate				3.60%
Senior Notes \| 2012 Senior Notes
Debt Instrument [Line Items]
Debt instrument, unamortized discount				$ 4,500,000
Debt issuance costs, gross				6,100,000
Proceeds from debt, net of issuance costs				$ 739,300,000
Debt fair value					$ 360,800,000

Restructuring charges and other facility exit costs, net (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2017	Oct. 31, 2017	Jan. 31, 2017
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 7.5
Additions	0.5
Payments	(5.1)
Adjustments	(0.3)
Ending Balance	2.6
Current portion		$ 2.4	$ 5.9
Non-current portion		0.2	1.6
Total Restructuring Reserve	7.5	2.6	7.5
Lease termination and other exit costs
Restructuring Reserve [Roll Forward]
Beginning Balance	4.5
Additions	0.3
Payments	(2.3)
Adjustments	(0.2)
Ending Balance	2.3
Total Restructuring Reserve	4.5	2.3	4.5
Fiscal 2017 Plan \| Employee termination costs
Restructuring Reserve [Roll Forward]
Beginning Balance	1.1
Additions	0.1
Payments	(1.4)
Adjustments	0.2
Ending Balance	0.0
Total Restructuring Reserve	1.1	0.0	1.1
Fiscal 2017 Plan \| Lease termination and other exit costs
Restructuring Reserve [Roll Forward]
Beginning Balance	1.9
Additions	0.1
Payments	(1.4)
Adjustments	(0.3)
Ending Balance	0.3
Total Restructuring Reserve	$ 1.9	$ 0.3	$ 1.9

Common Stock Repurchase Program Additional Information (Details) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
	Oct. 31, 2017 USD ($) $ / shares shares	Oct. 31, 2017 USD ($) $ / shares shares
Common Stock
Equity, Class of Treasury Stock [Line Items]
Repurchased shares of its common stock on the open market, value \| $	$ 35.6	$ 117.6
Retained Earnings
Equity, Class of Treasury Stock [Line Items]
Repurchased shares of its common stock on the open market, value \| $	$ 81.7	$ 310.3
Common Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased and retired (in shares) \| shares	1.0	4.4
Repurchased shares of its common stock on the open market, average repurchase price per share (in usd per share) \| $ / shares	$ 112.97	$ 96.39
Common Stock shares remained available for repurchase under repurchase plans (in shares) \| shares	22.1	22.1

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 733.6
Other comprehensive (loss) income before reclassifications			29.2
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			(6.7)
Tax effects			0.5
Total other comprehensive (loss) income	$ (2.6)	$ (57.7)	23.0	$ (66.4)
Ending balance	107.3		107.3
Net Unrealized Gains (Losses) on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			14.6
Other comprehensive (loss) income before reclassifications			(10.2)
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			(6.9)
Tax effects			1.7
Total other comprehensive (loss) income			(15.4)
Ending balance	(0.8)		(0.8)
Net Unrealized Gains (Losses) on Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			1.5
Other comprehensive (loss) income before reclassifications			0.7
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			0.0
Tax effects			(0.3)
Total other comprehensive (loss) income			0.4
Ending balance	1.9		1.9
Defined Benefit Pension Components
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(33.8)
Other comprehensive (loss) income before reclassifications			(0.1)
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			0.1
Tax effects			0.0
Total other comprehensive (loss) income			0.0
Ending balance	(33.8)		(33.8)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(160.8)
Other comprehensive (loss) income before reclassifications			38.8
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			0.1
Tax effects			(0.9)
Total other comprehensive (loss) income			38.0
Ending balance	(122.8)		(122.8)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(178.5)
Ending balance	$ (155.5)		$ (155.5)

Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net loss	$ (119.8)	$ (142.8)	$ (393.4)	$ (408.7)
Denominator:
Denominator for basic net loss per share—weighted average shares (shares)	219,600,000	222,300,000	219,700,000	223,300,000
Effect of dilutive securities (shares)	0	0	0	0
Denominator for dilutive net loss per share (shares)	219,600,000	222,300,000	219,700,000	223,300,000
Basic net loss per share (in usd per share)	$ (0.55)	$ (0.64)	$ (1.79)	$ (1.83)
Diluted net loss per share (in usd per share)	$ (0.55)	$ (0.64)	$ (1.79)	$ (1.83)
Potentially dilutive shares excluded from the computation of diluted net income per share (shares)	4,100,000	4,400,000	4,400,000	4,000,000.0
Exercise Price Higher than Average Market Value
Denominator:
Potentially dilutive shares excluded from the computation of diluted net income per share (shares)	0	0	300,000	400,000

Segment, Geographic and Product Family Information Concerning the Operations Of Reportable Segments (Details)	9 Months Ended
	Oct. 31, 2017 manager segment
Segment Reporting [Abstract]
Number of segment managers \| manager	1
Number of operating segments \| segment	1

Segment, Geographic and Product Family Information Information Regarding Operations by Geographic Area and Product Family (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Segment Reporting Information [Line Items]
Net revenue	$ 515.3	$ 489.6	$ 1,502.8	$ 1,552.2
Architecture, Engineering and Construction
Segment Reporting Information [Line Items]
Net revenue	215.4	212.3	628.7	684.4
Manufacturing
Segment Reporting Information [Line Items]
Net revenue	146.9	146.6	436.0	481.5
AutoCAD and AutoCAD LT
Segment Reporting Information [Line Items]
Net revenue	102.7	80.1	290.7	239.1
Media and Entertainment
Segment Reporting Information [Line Items]
Net revenue	37.7	34.2	112.1	103.6
Other
Segment Reporting Information [Line Items]
Net revenue	12.6	16.4	35.3	43.6
U.S.
Segment Reporting Information [Line Items]
Net revenue	182.4	182.2	546.8	562.1
Other Americas
Segment Reporting Information [Line Items]
Net revenue	32.2	31.1	91.9	99.0
Americas
Segment Reporting Information [Line Items]
Net revenue	214.6	213.3	638.7	661.1
Europe, Middle East and Africa
Segment Reporting Information [Line Items]
Net revenue	205.4	191.0	594.4	614.1
Asia Pacific
Segment Reporting Information [Line Items]
Net revenue	$ 95.3	$ 85.3	$ 269.7	$ 277.0

Subsequent Events (Details) $ in Millions		3 Months Ended					9 Months Ended
Subsequent Events (Details) $ in Millions	Nov. 22, 2017 USD ($) Position	Jan. 31, 2019 USD ($)	Oct. 31, 2018 USD ($)	Jul. 31, 2018 USD ($)	Apr. 30, 2018 USD ($)	Jan. 31, 2018 USD ($)	Oct. 31, 2017 USD ($)
Subsequent Event [Line Items]
Restructuring charges							$ 0.5
Subsequent Event
Subsequent Event [Line Items]
Expected termination of workforce, percent	13.00%
Employees expected to be terminated \| Position	1,150
Minimum \| Subsequent Event
Subsequent Event [Line Items]
Expected restructuring and related costs	$ 135.0
Maximum \| Subsequent Event
Subsequent Event [Line Items]
Expected restructuring and related costs	149.0
One-time Termination Benefits \| Minimum \| Subsequent Event
Subsequent Event [Line Items]
Expected restructuring and related costs	124.0
One-time Termination Benefits \| Maximum \| Subsequent Event
Subsequent Event [Line Items]
Expected restructuring and related costs	137.0
Facility Costs
Subsequent Event [Line Items]
Restructuring charges							$ 0.3
Facility Costs \| Minimum \| Subsequent Event
Subsequent Event [Line Items]
Expected restructuring and related costs	11.0
Facility Costs \| Maximum \| Subsequent Event
Subsequent Event [Line Items]
Expected restructuring and related costs	$ 12.0
Scenario, Forecast
Subsequent Event [Line Items]
Restructuring charges		$ 1.0
Scenario, Forecast \| Minimum
Subsequent Event [Line Items]
Restructuring charges			$ 8.0	$ 14.0	$ 21.0	$ 91.0
Scenario, Forecast \| Maximum
Subsequent Event [Line Items]
Restructuring charges			$ 9.0	$ 15.0	$ 24.0	$ 100.0

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Oct. 31, 2017	Nov. 30, 2017
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 31, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Trading Symbol	ADSK
Entity Registrant Name	AUTODESK INC
Entity Central Index Key	0000769397
Current Fiscal Year End Date	--01-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		220,266,822

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Net revenue:
Maintenance	$ 244.4	$ 273.2	$ 769.8	$ 835.1
Subscription	231.1	112.4	600.6	299.7
Total maintenance and subscription revenue	475.5	385.6	1,370.4	1,134.8
License and other	39.8	104.0	132.4	417.4
Total net revenue	515.3	489.6	1,502.8	1,552.2
Cost of revenue:
Cost of maintenance and subscription revenue	53.9	46.8	161.6	140.2
Cost of license and other revenue	19.6	24.3	56.0	86.8
Amortization of developed technology	4.0	10.4	12.7	32.0
Total cost of revenue	77.5	81.5	230.3	259.0
Gross profit	437.8	408.1	1,272.5	1,293.2
Operating expenses:
Marketing and sales	272.5	255.0	785.8	738.9
Research and development	191.8	192.6	573.3	579.1
General and administrative	68.8	70.4	225.1	213.7
Amortization of purchased intangibles	4.7	6.8	15.3	22.5
Restructuring charges and other facility exit costs, net	0.0	3.2	0.2	71.5
Total operating expenses	537.8	528.0	1,599.7	1,625.7
Loss from operations	(100.0)	(119.9)	(327.2)	(332.5)
Interest and other expense, net	(11.2)	(9.4)	(31.8)	(23.1)
Loss before income taxes	(111.2)	(129.3)	(359.0)	(355.6)
Provision for income taxes	(8.6)	(13.5)	(34.4)	(53.1)
Net loss	$ (119.8)	$ (142.8)	$ (393.4)	$ (408.7)
Basic net loss per share (in usd per share)	$ (0.55)	$ (0.64)	$ (1.79)	$ (1.83)
Diluted net loss per share (in usd per share)	$ (0.55)	$ (0.64)	$ (1.79)	$ (1.83)
Weighted average shares used in computing basic net loss per share (shares)	219.6	222.3	219.7	223.3
Weighted average shares used in computing diluted net loss per share (shares)	219.6	222.3	219.7	223.3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (119.8)	$ (142.8)	$ (393.4)	$ (408.7)
Other comprehensive (loss) income, net of reclassifications:
Net loss on derivative instruments (net of tax effect of $0.3, $0.2, $1.7 and ($0.6), respectively)	(2.4)	(0.7)	(15.4)	(11.7)
Change in net unrealized gain (loss) on available-for-sale securities (net of tax effect of ($0.4), $0.0, ($0.3), and ($0.6), respectively)	0.2	(1.6)	0.4	1.8
Change in defined benefit pension items (net of tax effect of $0.0, $0.0, $0.0, and ($0.2), respectively)	0.2	0.3	0.0	0.6
Net change in cumulative foreign currency translation (loss) gain (net of tax effect of $0.0, ($0.5), ($0.9) and ($0.5), respectively)	(0.6)	(55.7)	38.0	(57.1)
Total other comprehensive (loss) income	(2.6)	(57.7)	23.0	(66.4)
Total comprehensive loss	$ (122.4)	$ (200.5)	$ (370.4)	$ (475.1)

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Statement of Comprehensive Income [Abstract]
Net (loss) on derivative instruments, tax effect	$ 0.3	$ 0.2	$ 1.7	$ (0.6)
Change in net unrealized gain (loss) on available-for-sale securities, tax effect	(0.4)	0.0	(0.3)	(0.6)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	0.0	0.0	0.0	(0.2)
Net change in cumulative foreign currency translation loss, tax effect	$ 0.0	$ (0.5)	$ (0.9)	$ (0.5)

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Oct. 31, 2017	Jan. 31, 2017
Current assets:
Cash and cash equivalents	$ 1,025.2	$ 1,213.1
Marketable securities	428.7	686.8
Accounts receivable, net	307.8	452.3
Prepaid expenses and other current assets	110.2	108.4
Total current assets	1,871.9	2,460.6
Marketable securities	264.3	306.2
Computer equipment, software, furniture and leasehold improvements, net	148.1	158.6
Developed technologies, net	29.9	45.7
Goodwill	1,588.7	1,561.1
Deferred income taxes, net	64.7	63.9
Other assets	184.4	202.0
Total assets	4,152.0	4,798.1
Current liabilities:
Accounts payable	93.3	93.5
Accrued compensation	195.9	238.2
Accrued income taxes	21.7	50.0
Deferred revenue	1,333.1	1,270.1
Current portion of long-term notes payable, net	0.0	398.7
Other accrued liabilities	106.0	134.9
Total current liabilities	1,750.0	2,185.4
Long-term deferred revenue	430.8	517.9
Long-term income taxes payable	31.3	39.3
Long-term deferred income taxes	97.9	91.5
Long-term notes payable, net	1,585.4	1,092.0
Other liabilities	149.3	138.4
Stockholders’ equity:
Common stock and additional paid-in capital	1,930.8	1,876.3
Accumulated other comprehensive loss	(155.5)	(178.5)
Accumulated deficit	(1,668.0)	(964.2)
Total stockholders’ equity	107.3	733.6
Total liabilities and stockholders' equity	$ 4,152.0	$ 4,798.1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016
Operating activities:
Net loss	$ (393.4)	$ (408.7)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation, amortization and accretion	81.5	104.5
Stock-based compensation expense	199.5	162.5
Deferred income taxes	7.3	(39.6)
Restructuring charges and other facility exit costs, net	0.2	71.5
Other operating activities	18.1	3.4
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	143.3	393.8
Prepaid expenses and other current assets	(6.5)	(12.7)
Accounts payable and accrued liabilities	(69.3)	(71.9)
Deferred revenue	(21.8)	15.6
Accrued income taxes	(37.3)	(64.3)
Net cash (used in) provided by operating activities	(78.4)	154.1
Investing activities:
Purchases of marketable securities	(419.6)	(1,106.4)
Sales of marketable securities	199.2	544.7
Maturities of marketable securities	530.1	1,012.6
Capital expenditures	(39.3)	(65.1)
Acquisitions, net of cash acquired	0.0	(85.2)
Other investing activities	(11.5)	(14.8)
Net cash provided by investing activities	258.9	285.8
Financing activities:
Proceeds from issuance of common stock, net of issuance costs	93.2	102.2
Taxes paid related to net share settlement of equity awards	(120.6)	(58.9)
Repurchases of common stock	(437.9)	(397.6)
Proceeds from debt, net of discount	496.9	0.0
Repayment of debt	(400.0)	0.0
Other financing activities	(5.8)	0.0
Net cash used in financing activities	(374.2)	(354.3)
Effect of exchange rate changes on cash and cash equivalents	5.8	(2.1)
Net (decrease) increase in cash and cash equivalents	(187.9)	83.5
Cash and cash equivalents at beginning of period	1,213.1	1,353.0
Cash and cash equivalents at end of period	$ 1,025.2	$ 1,436.5

Basis of Presentation

9 Months Ended

Oct. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Change in Presentation

During the first quarter of fiscal 2018, the Company changed its historical presentation of its revenue and cost of revenue categories.

Maintenance revenue is presented as a separate line item in the new presentation and consists of revenue from our existing maintenance plan agreements and related renewals.

License and other revenue will continue to be presented as a separate line item and include any residual perpetual licenses sold, standalone consulting services, and other immaterial items.



	Three Months Ended October 31, 2016							Nine Months Ended October 31, 2016
	Previously Reported		Change in Presentation Reclassification			Current Presentation		Previously Reported		Change in Presentation Reclassification			Current Presentation
Net revenue:
Maintenance (1)	N/A		$	273.2		$	273.2	N/A		$	835.1		$	835.1
Subscription	$	319.5	(207.1		)	112.4		$	967.5	(667.8		)	299.7
License and other	170.1		(66.1		)	104.0		584.7		(167.3		)	417.4
Total	$	489.6	$	—		$	489.6	$	1,552.2	$	—		$	1,552.2

Cost of revenue:
Maintenance and subscription (2)	$	35.1	$	11.7		$	46.8	$	113.1	$	27.1		$	140.2
License and other	46.4		(22.1		)	24.3		145.9		(59.1		)	86.8
Amortization of developed technology (1)	N/A		10.4			10.4		N/A		32.0			32.0
Total	$	81.5	$	—		$	81.5	$	259.0	$	—		$	259.0

_______________


(1)	These lines were not previously reported in the Condensed Consolidated Statement of Operations.

(2)

Previously, titled "Subscription."

Recently Issued Accounting Standards	9 Months Ended
Recently Issued Accounting Standards	Oct. 31, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued Accounting Standards	Recently Issued Accounting Standards With the exception of those discussed below, there have been no recent changes in accounting pronouncements issued by the Financial Accounting Standards Board (“FASB”) or adopted by the Company during the nine months ended October 31, 2017, that are of significance, or potential significance, to the Company. Accounting standard adopted in the current fiscal year Autodesk adopted FASB's Accounting Standards Update No. 2017-04 ("ASU 2017-04"), "Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" during the three months ended April 30, 2017. The ASU simplifies the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test. Under current guidance, Step 2 of the goodwill impairment test requires entities to calculate the implied fair value of goodwill in the same manner as the amount of goodwill recognized in a business combination by assigning the fair value of a reporting unit to all of the assets and liabilities of the reporting unit. The carrying value in excess of the implied fair value is recognized as goodwill impairment. Under the new standard, goodwill impairment is recognized based on Step 1 of the current guidance, which calculates the carrying value in excess of the reporting unit’s fair value. The new guidance is required to be applied on a prospective basis and as such, Autodesk will use the simplified test in its annual fourth fiscal quarter testing or more often if circumstances indicate a potential impairment may exist, or if events have affected the composition of reporting units. Autodesk does not believe ASU 2017-04 will have a material impact on its consolidated financial statements. Recently issued accounting standards but not yet adopted In August 2017, FASB issued Accounting Standards Update No. 2017-12 ("ASU 2017-12"), "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities." The targeted amendments help simplify certain aspects of hedge accounting and result in a more accurate portrayal of the economics of an entity’s risk management activities in its financial statements. For cash flow and net investment hedges as of the adoption date, the guidance requires a modified retrospective approach. The amended presentation and disclosure guidance is required only prospectively. The amendments are effective for Autodesk's fiscal year beginning February 1, 2019, with early adoption permitted. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption. In February 2017, FASB issued Accounting Standards Update No. 2017-05 ("ASU 2017-05"), "Other Income– Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets." The ASU, among other things, clarifies the scope of the derecognition of nonfinancial assets, the definition of in substance financial assets, and impacts the accounting for partial sales of nonfinancial assets by requiring full gain recognition upon the sale. The amendments are effective for Autodesk's fiscal year beginning February 1, 2018. The guidance may be applied retrospectively for all periods presented or retrospectively with a cumulative-effect adjustment at the date of adoption. The effect of the implementation will depend upon the nature of the Company's future acquisitions or dispositions, if any. The adoption of the guidance would not have had a material impact on acquisitions prior to the current period and on the Company's consolidated statements of financial condition and results of operations. In January 2017, FASB issued Accounting Standards Update No. 2017-01 ("ASU 2017-01"), "Business Combinations: Clarifying the Definition of a Business" which provides a more robust framework to use in determining when a set of assets and activities is considered a business. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2018. The new guidance is required to be applied on a prospective basis. The effect of the implementation will depend upon the nature of the Company's future acquisitions, if any. In October 2016, FASB issued Accounting Standards Update No. 2016-16 ("ASU 2016-16"), “Income Taxes: Intra-Entity Transfers of Assets Other than Inventory” which requires that entities recognize the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2018. The new guidance is required to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Autodesk is currently evaluating the accounting and disclosure requirements of the standard. Furthermore, the actual impact of implementation will largely depend on future intra-entity asset transfers, if any. In June 2016, FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") regarding ASC Topic 326, "Financial Instruments - Credit Losses," which modifies the measurement of expected credit losses of certain financial instruments. Autodesk plans to adopt ASU 2016-13 as of the effective date which represents Autodesk’s fiscal year beginning February 1, 2020. Autodesk does not believe the ASU will have a material impact on its consolidated financial statements. In February 2016, FASB issued Accounting Standards Update No. 2016-02 ("ASU 2016-02") regarding ASC Topic 842, "Leases." The amendments in this ASU require balance sheet recognition of lease assets and lease liabilities by lessees for leases classified as operating leases, with an optional policy election to not recognize lease assets and lease liabilities for leases with a term of 12 months or less. The amendments also require new disclosures, including qualitative and quantitative requirements, providing additional information about the amounts recorded in the financial statements. Autodesk plans to adopt ASU 2016-02 in Autodesk’s fiscal year beginning February 1, 2019. The amendments require a modified retrospective approach with optional practical expedients. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption. In January 2016, FASB issued Accounting Standards Update No. 2016-01 ("ASU 2016-01") regarding ASC Topic 825-10, "Financial Instruments - Overall." The amendments address certain aspects of recognition, measurement, presentation, and disclosure of financial instruments, and require equity securities to be measured at fair value with changes in fair value recognized through net income. The amendments also simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment for impairment quarterly at each reporting period. The amendments in ASU 2016-01 will be effective for Autodesk's fiscal year beginning February 1, 2018. An entity should apply the amendments by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption, with prospective adoption of the amendments related to equity securities without readily determinable fair values existing as of the date of adoption. Autodesk does not believe ASU 2016-01 will have a material impact on its consolidated financial statements. In May 2014, FASB issued Accounting Standards Update No. 2014-09 (regarding ASC Topic 606, “Revenue from Contracts with Customers.” ASU 2014-09 provides principles for recognizing revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, FASB issued Accounting Standards Update No. 2015-14 to defer the effective date by one year with early adoption permitted as of the original effective date. In addition, FASB issued Accounting Standards Update No. 2016-08, Accounting Standards Update No. 2016-10, Accounting Standards Update No. 2016-12, and Accounting Standard Update No. 2016-20 in March 2016, April 2016, May 2016, and December 2016, respectively, to help provide interpretive clarifications on the new guidance in ASC Topic 606. Autodesk currently plans to adopt ASU 2014-09 as of February 1, 2018, using the modified retrospective transition method. In terms of Autodesk's evaluation efforts, the Company has assigned internal resources in addition to the engagement of third party service providers to assist in the evaluation. The Company's preliminary assessment is that there should be no material change in the timing and amount of the recognition of revenue for the majority of the Company's product subscription offerings and enterprise arrangements. This preliminary assessment is based on the Company's analysis that the related software and cloud services in a majority of the product subscription and enterprise arrangements are not distinct in the context of the contract as they are considered highly interrelated and represent a single combined performance obligation that should be recognized over time. Due to the complexity of certain contracts, the actual revenue recognition treatment required under the new standard for these arrangements may be dependent on contract-specific terms and vary in some instances. A limited number of Autodesk's product subscriptions do not incorporate substantial cloud services, and under ASU 2014-09 will be recognized as distinct license and service performance obligations. Revenue allocated to the licenses in these offerings will be recognized at a point in time instead of over the contract term. While we are still evaluating, Autodesk believes the impact of the change to timing of revenue recognition for these limited offerings, and other revenue streams that Autodesk is currently evaluating, may have a material balance sheet impact on the adoption date with the application of the modified retrospective transition method. It is not expected to have a material impact to reported revenue in subsequent reporting periods. Another significant provision under ASU 2014-09 includes the capitalization and amortization of costs associated with obtaining a contract, such as sales commission. The Company expects there to be a material balance sheet impact at the period of adoption capturing the sales commission capitalization and is currently evaluating the magnitude at implementation. Furthermore, the Company has made and will continue to make investments in systems and processes to enable timely and accurate reporting under the new standard. The Company currently expects that necessary operational and internal control structural changes will be implemented prior to the adoption date.

Concentration of Credit Risk	9 Months Ended
Concentration of Credit Risk	Oct. 31, 2017
Risks and Uncertainties [Abstract]
Concentration of Credit Risk	Concentration of Credit Risk Autodesk places its cash, cash equivalents and marketable securities in highly liquid instruments with, and in the custody of, diversified financial institutions globally with high credit ratings and limits the amounts invested with any one institution, type of security and issuer. Autodesk’s primary commercial banking relationship is with Citigroup Inc. and its global affiliates. Citibank, N.A., an affiliate of Citigroup, is one of the lead lenders and an agent in the syndicate of Autodesk’s $400.0 million line of credit facility. Total sales to the distributor Tech Data Corporation and its global affiliates (“Tech Data”) accounted for 32% and 31% of Autodesk’s total net revenue for the three months ended October 31, 2017 and 2016, respectively, and 31% and 30% of Autodesk’s total net revenue for the nine months ended October 31, 2017 and 2016, respectively. The majority of the net revenue from sales to Tech Data is for sales made outside of the United States. In addition, Tech Data accounted for 28% and 20% of trade accounts receivable at October 31, 2017 and January 31, 2017, respectively.

Financial Instruments

9 Months Ended

Oct. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Financial Instruments



			October 31, 2017
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value			Level 1		Level 2			Level 3
Cash equivalents (1):
	Certificates of deposit		63.1		—		—			63.1			63.1		—			—
	Corporate debt securities		8.0		—		—			8.0			8.0		—			—
	Commercial paper		166.5		—		—			166.5			—		166.5			—
	Custody cash deposit		0.9		—		—			0.9			0.9		—			—
	Money market funds		144.8		—		—			144.8			—		144.8			—
	U.S. government securities		250.0		—		—			250.0			250.0		—			—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	7.5		—		—			7.5			7.5		—			—
		Asset backed securities	30.4		—		—			30.4			—		30.4			—
		Certificates of deposit	4.0		—		—			4.0			4.0		—			—
		Commercial paper	31.3		—		—			31.3			—		31.3			—
		Corporate debt securities	218.7		0.1		(0.1		)	218.7			218.7		—			—
		Municipal bonds	15.5				—			15.5			15.5		—			—
		Sovereign debt	6.0		—		—			6.0			—		6.0			—
		U.S. government securities	58.8		—		—			58.8			58.8		—			—
	Short-term trading securities
		Mutual funds	49.1		7.4		—			56.5			56.5		—			—
	Long-term available-for-sale
		Agency bonds	12.2		—		—			12.2			12.2		—			—
		Asset backed securities	60.8		—		(0.1		)	60.7			—		60.7			—
		Corporate debt securities	143.1		0.2		(0.1		)	143.2			143.2		—			—
		Municipal bonds	12.8		—		(0.1		)	12.7			12.7		—			—
		Sovereign debt	2.7		—		—			2.7			—		2.7			—
		U.S. government securities	32.9		—		(0.1		)	32.8			32.8		—			—
Convertible debt securities (2)			8.4		0.6		—			9.0			—		—			9.0
Derivative contract assets (3)			2.4		7.2		(0.5		)	9.1			—		7.1			2.0
Derivative contract liabilities (4)			—		—		(8.9		)	(8.9		)	—		(8.9		)	—
		Total	$	1,329.9	$	15.5	$	(9.9	)	$	1,335.5		$	883.9	$	440.6		$	11.0

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Condensed Consolidated Balance Sheets.


(2)	Considered “available-for-sale” and included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets” or “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(4)	Included in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.



			January 31, 2017
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value			Level 1		Level 2			Level 3
Cash equivalents (1):
	Agency bonds		$	6.0	$	—	$	—		$	6.0		$	6.0	$	—		$	—
	Certificates of deposit		63.1		—		—			63.1			63.1		—			—
	Commercial paper		207.4		—		—			207.4			—		207.4			—
	Corporate debt securities		40.2		—		—			40.2			40.2		—			—
	Custody cash deposit		3.2		—		—			3.2			3.2		—			—
	Money Market funds		256.5		—		—			256.5			—		256.5			—
	Municipal bonds		5.0		—		—			5.0			5.0		—			—
	Sovereign debt		15.0		—		—			15.0			—		15.0			—
	U.S. government securities		309.5		—		—			309.5			309.5		—			—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	13.2		—					13.2			13.2		—			—
		Asset backed securities	19.6		—		—			19.6			—		19.6			—
		Certificates of deposit	157.3		—		—			157.3			157.3		—			—
		Commercial paper	109.2		—		—			109.2			—		109.2			—
		Corporate debt securities	234.7		—		(0.2		)	234.5			234.5		—			—
		Municipal bonds	43.4		—		—			43.4			43.4		—			—
		Sovereign debt	30.0		—		—			30.0			—		30.0			—
		U.S. government securities	32.3		—		—			32.3			32.3		—			—
	Short-term trading securities
		Mutual funds	44.8		2.5		—			47.3			47.3		—			—
	Long-term available-for-sale
		Agency bonds	7.1		—		—			7.1			7.1		—			—
		Asset backed securities	65.8		0.1		—			65.9			—		65.9			—
		Corporate debt securities	172.1		0.1		(0.1		)	172.1			172.1		—			—
		Municipal bonds	10.7		—		—			10.7			10.7		—			—
		Sovereign debt	1.5		—		—			1.5			—		1.5			—
		U.S. government securities	48.8		0.1		—			48.9			48.9		—			—
Convertible debt securities (2)			4.9		2.3		(1.6		)	5.6			—		—			5.6
Derivative contract assets (3)			2.2		12.3		(1.3		)	13.2			—		11.9			1.3
Derivative contract liabilities (4)			—		—		(10.4		)	(10.4		)	—		(10.4		)	—
		Total	$	1,903.5	$	17.4	$	(13.6	)	$	1,907.3		$	1,193.8	$	706.6		$	6.9

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Condensed Consolidated Balance Sheets.


(2)	Considered “available-for-sale” and included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets,” “Other assets,” or “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.


(4)	Included in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.

A reconciliation of the change in Autodesk’s Level 3 items for the nine months ended October 31, 2017 follows:



	Fair Value Measurements Using Significant Unobservable Inputs
	(Level 3)
		Derivative Contracts			Convertible Debt Securities			Total
Balances, January 31, 2017		$	1.3		$	5.6		$	6.9
Purchases		1.1			5.9			7.0
Losses included in earnings		(0.4		)	(2.4		)	(2.8		)
Losses included in OCI		—			(0.1		)	(0.1		)
Balances, October 31, 2017		$	2.0		$	9.0		$	11.0

The following table summarizes the estimated fair value of Autodesk's “available-for-sale securities” classified by the contractual maturity date of the security:



	October 31, 2017
	Cost		Fair Value
Due within 1 year	$	377.4	$	377.9
Due in 1 year through 5 years	259.4		259.3
Due in 5 years through 10 years	5.7		5.7
Due after 10 years	2.6		2.6
Total	$	645.1	$	645.5

As of October 31, 2017 and January 31, 2017, Autodesk had no securities, individually and in the aggregate, in a continuous unrealized loss position for greater than twelve months.

Proceeds from the sale and maturity of marketable securities for the nine months ended October 31, 2017 and 2016 were $729.3 million and $1,557.3 million, respectively.

Derivative Financial Instruments

Foreign currency contracts designated as cash flow hedges

Derivatives not designated as hedging instruments

Fair Value of Derivative Instruments

The fair values of derivative instruments in Autodesk’s Condensed Consolidated Balance Sheets were as follows as of October 31, 2017 and January 31, 2017:



	Balance Sheet Location	Fair Value at
	Balance Sheet Location	October 31, 2017		January 31, 2017
Derivative Assets
Foreign currency contracts designated as cash flow hedges	Prepaid expenses and other current assets	$	4.4	$	10.1
Derivatives not designated as hedging instruments	Prepaid expenses and other current assets and Other assets	4.7		3.2
Total derivative assets		$	9.1	$	13.3
Derivative Liabilities
Foreign currency contracts designated as cash flow hedges	Other accrued liabilities	$	8.5	$	4.5
Derivatives not designated as hedging instruments	Other accrued liabilities	0.4		6.0
Total derivative liabilities		$	8.9	$	10.5



	Foreign Currency Contracts
	Three Months Ended October 31,					Nine Months Ended October 31,
	2017		2016			2017			2016
Amount of gain (loss) recognized in accumulated other comprehensive (loss) income on derivatives (effective portion)	$	2.9	$	1.8		$	(8.5	)	$	(3.1	)
Amount and location of gain (loss) reclassified from accumulated other comprehensive (loss) income into (loss) income (effective portion)
Net revenue	$	2.4	$	1.0		$	7.2		$	8.4
Operating expenses	2.9		1.5			(0.3		)	0.2
Total	$	5.3	$	2.5		$	6.9		$	8.6
Amount and location of gain (loss) recognized in (loss) income on derivatives (ineffective portion and amount excluded from effectiveness testing)
Interest and other expense, net	$	—	$	(0.1	)	$	(0.1	)	$	(0.5	)



	Three Months Ended October 31,					Nine Months Ended October 31,
	2017		2016			2017			2016
Amount and location of gain (loss) recognized in (loss) income on derivatives
Interest and other expense, net	$	0.9	$	(1.4	)	$	(7.4	)	$	(12.3	)

Stock-based Compensation Expense

9 Months Ended

Oct. 31, 2017

Stock-based Compensation Expense

Restricted Stock Units:

A summary of restricted stock activity for the nine months ended October 31, 2017 is as follows:



	Unvested Restricted Stock Units		Weighted average grant date fair value per share
	(in thousands)
Unvested restricted stock units at January 31, 2017	7,622.4		$	60.13
Granted	2,036.6		106.45
Vested	(3,156.6	)	57.21
Canceled/Forfeited	(534.3	)	67.05
Performance Adjustment (1)	24.7		61.79
Unvested restricted stock units at October 31, 2017	5,992.8		$	78.94

_______________


(1)	Based on Autodesk's financial results and relative total stockholder return for the fiscal 2017 performance period. The performance stock units were attained at rates ranging from 99.7% to 114.7% of the target award.

The fair value of the shares vested during the nine months ended October 31, 2017 and 2016 was $332.8 million and $180.3 million, respectively.


•	Up to one third of the performance stock units may vest following year one, depending upon the achievement of the performance criteria for fiscal 2018 as well as 1-year Relative TSR (covering year one).


•	Up to one third of the performance stock units may vest following year two, depending upon the achievement of the performance criteria for year two as well as 2-year Relative TSR (covering years one and two).


•	Up to one third of the performance stock units may vest following year three, depending upon the achievement of the performance criteria for year three as well as 3-year Relative TSR (covering years one, two and three).

1998 Employee Qualified Stock Purchase Plan (“ESPP”)

A summary of the ESPP activity for three and nine months ended October 31, 2017 and 2016 is as follows:



	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
Issued shares	0.9		1.1		2.0		2.3
Average price of issued shares	$	39.92	$	37.36	$	39.03	$	36.99
Weighted average grant date fair value of awards granted under the ESPP (1)	$	33.04	$	20.75	$	32.41	$	19.20

_______________


(1)	Calculated as of the award grant date using the Black-Scholes Merton (“BSM") option pricing model.

Stock-based Compensation Expense

The following table summarizes stock-based compensation expense for the three and nine months ended October 31, 2017 and 2016, respectively, as follows:



	Three Months Ended October 31,					Nine Months Ended October 31,
	2017			2016		2017			2016
Cost of maintenance and subscription revenue (1)	$	2.8		$	2.2	$	8.5		$	6.2
Cost of license and other revenue (1)	1.0			1.3		3.1			4.1
Marketing and sales	27.7			24.2		80.1			69.0
Research and development	20.1			20.9		61.7			60.0
General and administrative	13.5			8.0		46.1			23.2
Stock-based compensation expense related to stock awards and ESPP purchases	65.1			56.6		199.5			162.5
Tax benefit	(1.3		)	—		(1.6		)	—
Stock-based compensation expense related to stock awards and ESPP purchases, net of tax	$	63.8		$	56.6	$	197.9		$	162.5

_______________


(1)	Prior periods have been adjusted to conform with the current period's presentation. See Note 1, "Basis of Presentation," for additional information.

Stock-based Compensation Expense Assumptions



	Three Months Ended October 31, 2017		Three Months Ended October 31, 2016
	Performance Stock Unit (1)	ESPP	Performance Stock Unit (1)	ESPP
Range of expected volatilities	N/A	31.7 - 33.4%	N/A	31.0 - 33.9%
Range of expected lives (in years)	N/A	0.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	N/A	—%	N/A	—%
Range of risk-free interest rates	N/A	1.2 - 1.4%	N/A	0.5 - 0.8%
	Nine Months Ended October 31, 2017		Nine Months Ended October 31, 2016
	Performance Stock Unit	ESPP	Performance Stock Unit	ESPP
Range of expected volatilities	31.8%	31.4 - 33.7%	38.4 - 38.6%	30.0 - 40.2%
Range of expected lives (in years)	N/A	0.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	—%	—%	—%	—%
Range of risk-free interest rates	1.0 - 1.2%	0.9 - 1.4%	0.6 - 0.7%	0.5 - 0.9%

_______________


(1)	Autodesk did not grant PSUs that were subject to market conditions in the three months ended October 31, 2017 or 2016.

The range of expected lives of ESPP awards are based upon the four, six-month exercise periods within a 24-month offering period.

Autodesk recognizes expense only for the stock-based awards that ultimately vest. As permitted by ASU 2016-09, Autodesk accounts for forfeitures of our stock-based awards as those forfeitures occur.

Income Tax	9 Months Ended
Income Tax	Oct. 31, 2017
Income Tax Disclosure [Abstract]
Income Tax	Income Tax Autodesk's income tax expense was $8.6 million and $13.5 million for the three months ended October 31, 2017 and 2016, respectively, relative to pre-tax losses of $111.2 million and $129.3 million, respectively, for the same periods. The decrease in income tax expense was primarily due to the lower forecasted worldwide tax expense as the result of changes in the geographic mix of worldwide pre-tax book income. For the three months ended October 31, 2016, the discrete items were primarily from tax benefit on acceleration of revenue while the discrete items for the three months ended October 31, 2017 related to the expiration of the statute of limitations related to an uncertain tax position and the excess tax benefit of stock compensation. Autodesk's income tax expense was $34.4 million and $53.1 million for the nine months ended October 31, 2017 and 2016, respectively, relative to pre-tax losses of $359.0 million and $355.6 million, respectively, for the same periods. The decrease in income tax expense was primarily discrete items in the quarter related to the expiration of the statute of limitations related to an uncertain tax position, the excess tax benefit of stock compensation and the reversal of foreign withholding tax accruals. Income tax expense consists primarily of foreign taxes, U.S. tax expense related to indefinite-lived intangibles, and withholding taxes. Autodesk regularly assesses the need for a valuation allowance against its deferred tax assets. In making that assessment, Autodesk considers both positive and negative evidence related to the likelihood of realization of the deferred tax assets to determine, based on the weight of available evidence, whether it is more likely than not that some or all of the deferred tax assets will not be realized. In evaluating the need for a valuation allowance, Autodesk considered cumulative losses in the United States arising from the Company's business model transition as a significant piece of negative evidence and established a valuation allowance against the Company’s U.S. deferred tax assets in fiscal 2016. Based on the positive and negative evidence as of October 31, 2017, the Company continues to maintain a valuation allowance for the U.S. deferred tax assets. As of October 31, 2017, the Company had $291.4 million of gross unrecognized tax benefits, excluding interest, of which approximately $277.4 million represents the amount of unrecognized tax benefits that would impact the effective tax rate, if recognized. However, this rate impact would be $30.8 million to the extent that recognition of unrecognized tax benefits currently presented as a reduction of deferred tax assets would increase the valuation allowance. It is possible that the amount of unrecognized tax benefits will change in the next twelve months; however, an estimate of the range of the possible change cannot be made at this time. The Internal Revenue Service has started an examination of the Company's U.S. consolidated federal income tax returns for fiscal years 2014 and 2015. While it is possible that the Company's tax positions may be challenged, the Company believes its positions are consistent with the tax law, and the balance sheet reflects appropriate liabilities for uncertain federal tax positions for the years being examined.

Acquisitions	9 Months Ended
Acquisitions	Oct. 31, 2017
Business Combinations [Abstract]
Acquisitions	Acquisitions During the nine months ended October 31, 2017, Autodesk did not complete any business combinations or technology acquisitions. For acquisitions accounted for as business combinations, Autodesk records the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values at the date of acquisition. The fair values assigned to the identifiable intangible assets acquired were based on estimates and assumptions determined by management. Autodesk records the excess of consideration transferred over the aggregate fair values as goodwill. The goodwill recorded is primarily attributable to synergies expected to arise after the acquisitions.

Other Intangible Assets, Net

9 Months Ended

Oct. 31, 2017

Other Intangible Assets, Net

Other intangible assets including developed technologies, customer relationships, trade names, patents, user lists and the related accumulated amortization were as follows:



	October 31, 2017			January 31, 2017
Developed technologies, at cost	$	577.0		$	583.6
Customer relationships, trade names, patents, and user lists, at cost (1)	367.1			375.9
Other intangible assets, at cost (2)	944.1			959.5
Less: Accumulated amortization	(882.5		)	(862.0		)
Other intangible assets, net	$	61.6		$	97.5

_______________


(1)	Included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.

(2)

Includes the effects of foreign currency translation.

Goodwill

9 Months Ended

Oct. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill



Balance as of January 31, 2017	$	1,710.3
Less: accumulated impairment losses as of January 31, 2017	(149.2		)
Net balance as of January 31, 2017	1,561.1
Additions arising from acquisitions during the period	—
Effect of foreign currency translation, purchase accounting adjustments, and other during the period	27.6
Balance as of October 31, 2017	$	1,588.7

There was no goodwill impairment during the three and nine months October 31, 2017.

Deferred Compensation	9 Months Ended
Deferred Compensation	Oct. 31, 2017
Deferred Compensation Arrangements [Abstract]
Deferred Compensation	Deferred Compensation At October 31, 2017, Autodesk had marketable securities totaling $693.0 million, of which $56.5 million related to investments in debt and equity securities that are held in a rabbi trust under non-qualified deferred compensation plans. The total related deferred compensation liability was $56.5 million at October 31, 2017, of which $3.8 million was classified as current and $52.7 million was classified as non-current liabilities. The total related deferred compensation liability at January 31, 2017 was $47.3 million, of which $3.1 million was classified as current and $44.2 million was classified as non-current liabilities. The securities are recorded in the Condensed Consolidated Balance Sheets under the current portion of "Marketable securities." The current and non-current portions of the liability are recorded in the Condensed Consolidated Balance Sheets under “Accrued compensation” and “Other liabilities,” respectively.

Computer Equipment, Software, Furniture and Leasehold Improvements, Net

9 Months Ended

Oct. 31, 2017

Computer Equipment, Software, Furniture and Leasehold Improvements, Net

Computer equipment, software, furniture, leasehold improvements and the related accumulated depreciation were as follows:



	October 31, 2017			January 31, 2017
Computer hardware, at cost	$	210.8		$	206.1
Computer software, at cost	70.5			73.5
Leasehold improvements, land and buildings, at cost	221.9			206.3
Furniture and equipment, at cost	61.9			58.2
	565.1			544.1
Less: Accumulated depreciation	(417.0		)	(385.5		)
Computer software, hardware, leasehold improvements, furniture and equipment, net	$	148.1		$	158.6

Borrowing Arrangements	9 Months Ended
Borrowing Arrangements	Oct. 31, 2017
Line of Credit Facility [Abstract]
Borrowing Arrangements	Borrowing Arrangements In June 2017, Autodesk issued $500.0 million aggregate principal amount of 3.5% notes due June 15, 2027 (collectively, the “2017 Notes”). Net of a discount of $3.1 million and issuance costs of $4.9 million, Autodesk received net proceeds of $492.0 million from issuance of the 2017 Notes. Both the discount and issuance costs are being amortized to interest expense over the term of the 2017 Notes using the effective interest method. The proceeds of the 2017 Notes have been used for the repayment of $400.0 million of debt due December 15, 2017 and the remainder is available for general corporate purposes. Autodesk may redeem the 2017 Notes at any time, subject to a make whole premium. In addition, upon the occurrence of certain change of control triggering events, Autodesk may be required to repurchase the 2017 Notes at a price equal to 101% of their principal amount, plus accrued and unpaid interest to the date of repurchase. The 2017 Notes contain restrictive covenants that limit Autodesk's ability to create certain liens, to enter into certain sale and leaseback transactions and to consolidate or merge with, or convey, transfer or lease all or substantially all of its assets, subject to important qualifications and exceptions. Based on quoted market prices, the fair value of the 2017 Notes was approximately $502.7 million as of October 31, 2017. In June 2015, Autodesk issued $450.0 million aggregate principal amount of 3.125% notes due June 15, 2020 and $300.0 million aggregate principal amount of 4.375% notes due June 15, 2025 (collectively, the “2015 Notes”). Net of a discount of $1.7 million and issuance costs of $6.3 million, Autodesk received net proceeds of $742.0 million from issuance of the 2015 Notes. Both the discount and issuance costs are being amortized to interest expense over the respective terms of the 2015 Notes using the effective interest method. The proceeds of the 2015 Notes are available for general corporate purposes. Autodesk may redeem the 2015 Notes at any time, subject to a make whole premium. In addition, upon the occurrence of certain change of control triggering events, Autodesk may be required to repurchase the 2015 Notes at a price equal to 101% of their principal amount, plus accrued and unpaid interest to the date of repurchase. The 2015 Notes contain restrictive covenants that limit Autodesk's ability to create certain liens, to enter into certain sale and leaseback transactions and to consolidate or merge with, or convey, transfer or lease all or substantially all of its assets, subject to important qualifications and exceptions. Based on quoted market prices, the fair value of the 2015 Notes was approximately $781.9 million as of October 31, 2017. In December 2012, Autodesk issued $400.0 million aggregate principal amount of 1.95% notes due December 15, 2017 and $350.0 million aggregate principal amount of 3.6% notes due December 15, 2022 (collectively, the “2012 Notes”). Autodesk received net proceeds of $739.3 million from issuance of the 2012 Notes, net of a discount of $4.5 million and issuance costs of $6.1 million. Both the discount and issuance costs are being amortized to interest expense over the respective terms of the 2012 Notes using the effective interest method. The proceeds of the 2012 Notes are available for general corporate purposes. On July 27, 2017, Autodesk redeemed in full $400.0 million in aggregate principal amount of its outstanding 1.95% senior notes due December 15, 2017. The redemption was completed pursuant to the optional redemption provisions of the first supplemental indenture dated December 13, 2012. To redeem the notes, Autodesk used the proceeds of the 2017 Notes to pay a redemption price of approximately $400.9 million, plus accrued and unpaid interest. Total cash repayment was $401.8 million. The Company did not incur any additional early termination penalties in connection with such redemption. Based on the quoted market price, the fair value of the remaining 2012 Notes was approximately $360.8 million as of October 31, 2017. Autodesk’s line of credit facility permits unsecured short-term borrowings of up to $400.0 million, with an option to request an increase in the amount of the credit facility by up to an additional $100.0 million, and is available for working capital or other business needs. This credit agreement contains customary covenants that could restrict the imposition of liens on Autodesk’s assets, and restrict the Company’s ability to incur additional indebtedness or make dispositions of assets if Autodesk fails to maintain the financial covenants. As the result of a forecasted inability to comply with the credit agreement's minimum interest coverage ratio in the first quarter of fiscal 2018, the Company renegotiated the credit agreement's financial covenants in April 2017. The financial covenants now consist of a maximum debt to total cash ratio, a fixed charge coverage ratio through April 30, 2018, and after April 30, 2018, a minimum interest coverage ratio. The line of credit is syndicated with various financial institutions, including Citibank, N.A., an affiliate of Citigroup, which is one of the lead lenders and an agent. The maturity date on the line of credit is May 2020. At October 31, 2017, Autodesk was in compliance with the credit facility's covenants and had no outstanding borrowings on this line of credit.

Restructuring charges and other facility exit costs, net

9 Months Ended

Oct. 31, 2017

Restructuring and Related Activities [Abstract]

Restructuring charges and other facility exit costs, net

The following table sets forth the restructuring charges and other lease termination exit costs during the nine months ended October 31, 2017:



	Balances, January 31, 2017		Additions		Payments			Adjustments (1)			Balances, October 31, 2017
Fiscal 2017 Plan
Employee termination costs	$	1.1	$	0.1	$	(1.4	)	$	0.2		$	—
Lease termination and other exit costs	1.9		0.1		(1.4		)	(0.3		)	0.3
Other Lease Termination Costs
Lease termination costs	4.5		0.3		(2.3		)	(0.2		)	2.3
Total	$	7.5	$	0.5	$	(5.1	)	$	(0.3	)	$	2.6
Current portion (2)	$	5.9									$	2.4
Non-current portion (2)	1.6										0.2
Total	$	7.5									$	2.6

____________________


(1)	Adjustments primarily include the impact from a change in sublease assumptions related to certain lease terminations.

(2)

The current and non-current portions of the reserve are recorded in the Condensed Consolidated Balance Sheets under “Other accrued liabilities” and “Other liabilities,” respectively.

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Oct. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Guarantees and Indemnifications In the normal course of business, Autodesk provides indemnifications of varying scopes, including limited product warranties and indemnification of customers against claims of intellectual property infringement made by third parties arising from the use of its products or services. Autodesk accrues for known indemnification issues if a loss is probable and can be reasonably estimated. Historically, costs related to these indemnifications have not been significant, and because potential future costs are highly variable, Autodesk is unable to estimate the maximum potential impact of these indemnifications on its future results of operations. In connection with the purchase, sale or license of assets or businesses with third parties, Autodesk has entered into or assumed customary indemnification agreements related to the assets or businesses purchased, sold or licensed. Historically, costs related to these indemnifications have not been significant, and because potential future costs are highly variable, Autodesk is unable to estimate the maximum potential impact of these indemnifications on its future results of operations. As permitted under Delaware law, Autodesk has agreements whereby it indemnifies its officers and directors for certain events or occurrences while the officer or director is, or was, serving at Autodesk’s request in such capacity. The maximum potential amount of future payments Autodesk could be required to make under these indemnification agreements is unlimited; however, Autodesk has directors’ and officers’ liability insurance coverage that is intended to reduce its financial exposure and may enable Autodesk to recover a portion of any future amounts paid. Autodesk believes the estimated fair value of these indemnification agreements in excess of applicable insurance coverage is minimal. Legal Proceedings Autodesk is involved in a variety of claims, suits, investigations, and proceedings in the normal course of business activities including claims of alleged infringement of intellectual property rights, commercial, employment, piracy prosecution, business practices, and other matters. Autodesk routinely reviews the status of each significant matter and assesses its potential financial exposure. If the potential loss from any matter is considered probable and the amount can be reasonably estimated, Autodesk records a liability for the estimated loss. Because of inherent uncertainties related to these legal matters, Autodesk bases its loss accruals on the best information available at the time. As additional information becomes available, Autodesk reassesses its potential liability and may revise its estimates. In the Company's opinion, resolution of pending matters is not expected to have a material adverse impact on its consolidated results of operations, cash flows, or its financial position. Given the unpredictable nature of legal proceedings, there is a reasonable possibility that an unfavorable resolution of one or more such proceedings could in the future materially affect the Company's results of operations, cash flows, or financial position in a particular period, however, based on the information known by the Company as of the date of this filing and the rules and regulations applicable to the preparation of the Company's financial statements, any such amount is either immaterial or it is not possible to provide an estimated amount of any such potential loss.

Common Stock Repurchase Program	9 Months Ended
Common Stock Repurchase Program	Oct. 31, 2017
Class of Stock Disclosures [Abstract]
Common Stock Repurchase Program	Common Stock Repurchase Program Autodesk has a stock repurchase program that is used to offset dilution from the issuance of stock under the Company’s employee stock plans and for such other purposes as may be in the interests of Autodesk and its stockholders. Stock repurchases have the effect of returning excess cash generated from the Company’s business to stockholders. During the three and nine months ended October 31, 2017, Autodesk repurchased and retired 1.0 million and 4.4 million shares at an average repurchase price of $112.97 and $96.39 per share, respectively. Common stock and additional paid-in capital and accumulated deficit were reduced by $35.6 million and $81.7 million, respectively, during the three months ended October 31, 2017. Common stock and additional paid-in capital and accumulated deficit were reduced by $117.6 million and $310.3 million, respectively, during the nine months ended October 31, 2017. At October 31, 2017, 22.1 million shares remained available for repurchase under the repurchase program approved by the Board of Directors. During the nine months ended October 31, 2017, Autodesk repurchased its common stock through open market purchases. The number of shares acquired and the timing of the purchases are based on several factors, including general market and economic conditions, the number of employee stock option exercises and stock issuances, the trading price of Autodesk common stock, cash on hand and available in the United States, cash requirements for acquisitions, and Company defined trading windows.

Accumulated Other Comprehensive Loss

9 Months Ended

Oct. 31, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss, net of taxes, consisted of the following at October 31, 2017:



	Net Unrealized Gains (Losses) on Derivative Instruments			Net Unrealized Gains (Losses) on Available-for-Sale Securities			Defined Benefit Pension Components			Foreign Currency Translation Adjustments			Total
Balances, January 31, 2017	$	14.6		$	1.5		$	(33.8	)	$	(160.8	)	$	(178.5	)
Other comprehensive (loss) income before reclassifications	(10.2		)	0.7			(0.1		)	38.8			29.2
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss	(6.9		)	—			0.1			0.1			(6.7		)
Tax effects	1.7			(0.3		)	—			(0.9		)	0.5
Net current period other comprehensive (loss) income	(15.4		)	0.4			—			38.0			23.0
Balances, October 31, 2017	$	(0.8	)	$	1.9		$	(33.8	)	$	(122.8	)	$	(155.5	)

Net Loss Per Share

9 Months Ended

Oct. 31, 2017

Net Loss Per Share



	Three Months Ended October 31,						Nine Months Ended October 31,
	2017			2016			2017			2016
Numerator:
Net loss	$	(119.8	)	$	(142.8	)	$	(393.4	)	$	(408.7	)
Denominator:
Denominator for basic net loss per share—weighted average shares	219.6			222.3			219.7			223.3
Effect of dilutive securities (1)	—			—			—			—
Denominator for dilutive net loss per share	219.6			222.3			219.7			223.3
Basic net loss per share	$	(0.55	)	$	(0.64	)	$	(1.79	)	$	(1.83	)
Diluted net loss per share	$	(0.55	)	$	(0.64	)	$	(1.79	)	$	(1.83	)

____________________

(1)

Segment, Geographic and Product Family Information

9 Months Ended

Oct. 31, 2017

Segment, Geographic and Product Family Information

Information regarding Autodesk’s revenue by geographic area and product family is as follows:



	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
Net revenue by geographic area:
Americas
U.S.	$	182.4	$	182.2	$	546.8	$	562.1
Other Americas	32.2		31.1		91.9		99.0
Total Americas	214.6		213.3		638.7		661.1
Europe, Middle East and Africa	205.4		191.0		594.4		614.1
Asia Pacific	95.3		85.3		269.7		277.0
Total net revenue	$	515.3	$	489.6	$	1,502.8	$	1,552.2

Net revenue by product family:
Architecture, Engineering and Construction	$	215.4	$	212.3	$	628.7	$	684.4
Manufacturing	146.9		146.6		436.0		481.5
AutoCAD and AutoCAD LT	102.7		80.1		290.7		239.1
Media and Entertainment	37.7		34.2		112.1		103.6
Other	12.6		16.4		35.3		43.6
	$	515.3	$	489.6	$	1,502.8	$	1,552.2

Subsequent Events

9 Months Ended

Oct. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Subsequent Events



Fiscal Quarter	Approximate pre-tax restructuring charge (in millions)
Q4 FY18 (ending January 31, 2018)	$91 - $100
Q1 FY19 (ending April 30, 2018)	$21 - $24
Q2 FY19 (ending July 31, 2018)	$14 - $15
Q3 FY19 (ending October 31, 2018)	$8 - $9
Q4 FY19 (ending January 31, 2019)	$1

Basis of Presentation (Policies)	9 Months Ended
Basis of Presentation (Policies)	Oct. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The accompanying unaudited Condensed Consolidated Financial Statements of Autodesk, Inc. (“Autodesk,” “we,” “us,” “our,” or the “Company”) as of October 31, 2017, and for the three and nine months ended October 31, 2017 and 2016, have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information along with the instructions to Form 10-Q and Article 10 of Securities and Exchange Commission (“SEC”) Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements. In management’s opinion, Autodesk made all adjustments (consisting of normal, recurring and non-recurring adjustments) during the quarter that were considered necessary for the fair statement of the financial position and operating results of the Company. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts in the financial statements and accompanying notes. Actual results could differ from those estimates. In addition, the results of operations for the three and nine months ended October 31, 2017 are not necessarily indicative of the results for the entire fiscal year ending January 31, 2018, or for any other period. Further, the balance sheet as of January 31, 2017 has been derived from the audited balance sheet as of this date. There have been no material changes, other than what is discussed herein, to Autodesk's significant accounting policies as compared to the significant accounting policies disclosed in the Annual Report on Form 10-K for the fiscal year ended January 31, 2017. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and related notes, together with management’s discussion and analysis of financial position and results of operations contained in Autodesk’s Annual Report on Form 10-K for the fiscal year ended January 31, 2017, filed on March 21, 2017. Change in Presentation During the first quarter of fiscal 2018, the Company changed its historical presentation of its revenue and cost of revenue categories. Previously, the Company presented revenue and cost of revenue on two lines: subscription, and license and other. Included within subscription was maintenance revenue for all our software products and revenue for our cloud service offerings. License and other revenue included product license revenue, standalone consulting services, and other immaterial items. Also, included within license and other revenue was an allocation of the estimated value of the software license from our term-based product subscriptions and enterprise offerings, which contain a software license, maintenance and cloud services. For these arrangements, as there is no vendor-specific-objective evidence ("VSOE") for the related maintenance, the arrangement consideration was allocated between the license and maintenance deliverables based on best estimated selling prices in our condensed consolidated statements of operations. The Company performed the allocation because it provided a meaningful presentation to investors based on the Company's then current product mix. As part of the Company's technological and business model transition, the Company discontinued the sale of most of its perpetual licenses, transitioning away from selling a mix of perpetual licenses and term-based product subscriptions to a single subscription model involving more highly interrelated software and cloud functionalities. Fiscal 2018 marks the first full year in the Company's history that it will sell substantially term-based product subscriptions. To better reflect this shift in our business, the Company adopted a revised presentation in the first quarter of fiscal 2018, including the separation of subscription revenue and maintenance revenue on distinct line items on the Company's condensed consolidated statement of operations. Subscription revenue now consists of our full term-based product subscriptions, cloud service offerings, and flexible enterprise business arrangements. Note that with the change in our presentation of revenue in our condensed consolidated statement of operations in the first quarter of fiscal 2018, our term-based product subscriptions and flexible enterprise business arrangements are classified and presented in a single line item. Maintenance revenue is presented as a separate line item in the new presentation and consists of revenue from our existing maintenance plan agreements and related renewals. License and other revenue will continue to be presented as a separate line item and include any residual perpetual licenses sold, standalone consulting services, and other immaterial items. In connection with these revisions, the Company also revised its cost of revenue classification to present cost of subscription and maintenance revenue and amortization of developed technology separately. Cost of license and other revenue will continue to be presented as a separate line item.
Recently Issued Accounting Standards	Recently Issued Accounting Standards With the exception of those discussed below, there have been no recent changes in accounting pronouncements issued by the Financial Accounting Standards Board (“FASB”) or adopted by the Company during the nine months ended October 31, 2017, that are of significance, or potential significance, to the Company. Accounting standard adopted in the current fiscal year Autodesk adopted FASB's Accounting Standards Update No. 2017-04 ("ASU 2017-04"), "Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" during the three months ended April 30, 2017. The ASU simplifies the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test. Under current guidance, Step 2 of the goodwill impairment test requires entities to calculate the implied fair value of goodwill in the same manner as the amount of goodwill recognized in a business combination by assigning the fair value of a reporting unit to all of the assets and liabilities of the reporting unit. The carrying value in excess of the implied fair value is recognized as goodwill impairment. Under the new standard, goodwill impairment is recognized based on Step 1 of the current guidance, which calculates the carrying value in excess of the reporting unit’s fair value. The new guidance is required to be applied on a prospective basis and as such, Autodesk will use the simplified test in its annual fourth fiscal quarter testing or more often if circumstances indicate a potential impairment may exist, or if events have affected the composition of reporting units. Autodesk does not believe ASU 2017-04 will have a material impact on its consolidated financial statements. Recently issued accounting standards but not yet adopted In August 2017, FASB issued Accounting Standards Update No. 2017-12 ("ASU 2017-12"), "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities." The targeted amendments help simplify certain aspects of hedge accounting and result in a more accurate portrayal of the economics of an entity’s risk management activities in its financial statements. For cash flow and net investment hedges as of the adoption date, the guidance requires a modified retrospective approach. The amended presentation and disclosure guidance is required only prospectively. The amendments are effective for Autodesk's fiscal year beginning February 1, 2019, with early adoption permitted. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption. In February 2017, FASB issued Accounting Standards Update No. 2017-05 ("ASU 2017-05"), "Other Income– Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets." The ASU, among other things, clarifies the scope of the derecognition of nonfinancial assets, the definition of in substance financial assets, and impacts the accounting for partial sales of nonfinancial assets by requiring full gain recognition upon the sale. The amendments are effective for Autodesk's fiscal year beginning February 1, 2018. The guidance may be applied retrospectively for all periods presented or retrospectively with a cumulative-effect adjustment at the date of adoption. The effect of the implementation will depend upon the nature of the Company's future acquisitions or dispositions, if any. The adoption of the guidance would not have had a material impact on acquisitions prior to the current period and on the Company's consolidated statements of financial condition and results of operations. In January 2017, FASB issued Accounting Standards Update No. 2017-01 ("ASU 2017-01"), "Business Combinations: Clarifying the Definition of a Business" which provides a more robust framework to use in determining when a set of assets and activities is considered a business. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2018. The new guidance is required to be applied on a prospective basis. The effect of the implementation will depend upon the nature of the Company's future acquisitions, if any. In October 2016, FASB issued Accounting Standards Update No. 2016-16 ("ASU 2016-16"), “Income Taxes: Intra-Entity Transfers of Assets Other than Inventory” which requires that entities recognize the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2018. The new guidance is required to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Autodesk is currently evaluating the accounting and disclosure requirements of the standard. Furthermore, the actual impact of implementation will largely depend on future intra-entity asset transfers, if any. In June 2016, FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") regarding ASC Topic 326, "Financial Instruments - Credit Losses," which modifies the measurement of expected credit losses of certain financial instruments. Autodesk plans to adopt ASU 2016-13 as of the effective date which represents Autodesk’s fiscal year beginning February 1, 2020. Autodesk does not believe the ASU will have a material impact on its consolidated financial statements. In February 2016, FASB issued Accounting Standards Update No. 2016-02 ("ASU 2016-02") regarding ASC Topic 842, "Leases." The amendments in this ASU require balance sheet recognition of lease assets and lease liabilities by lessees for leases classified as operating leases, with an optional policy election to not recognize lease assets and lease liabilities for leases with a term of 12 months or less. The amendments also require new disclosures, including qualitative and quantitative requirements, providing additional information about the amounts recorded in the financial statements. Autodesk plans to adopt ASU 2016-02 in Autodesk’s fiscal year beginning February 1, 2019. The amendments require a modified retrospective approach with optional practical expedients. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption. In January 2016, FASB issued Accounting Standards Update No. 2016-01 ("ASU 2016-01") regarding ASC Topic 825-10, "Financial Instruments - Overall." The amendments address certain aspects of recognition, measurement, presentation, and disclosure of financial instruments, and require equity securities to be measured at fair value with changes in fair value recognized through net income. The amendments also simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment for impairment quarterly at each reporting period. The amendments in ASU 2016-01 will be effective for Autodesk's fiscal year beginning February 1, 2018. An entity should apply the amendments by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption, with prospective adoption of the amendments related to equity securities without readily determinable fair values existing as of the date of adoption. Autodesk does not believe ASU 2016-01 will have a material impact on its consolidated financial statements. In May 2014, FASB issued Accounting Standards Update No. 2014-09 (regarding ASC Topic 606, “Revenue from Contracts with Customers.” ASU 2014-09 provides principles for recognizing revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, FASB issued Accounting Standards Update No. 2015-14 to defer the effective date by one year with early adoption permitted as of the original effective date. In addition, FASB issued Accounting Standards Update No. 2016-08, Accounting Standards Update No. 2016-10, Accounting Standards Update No. 2016-12, and Accounting Standard Update No. 2016-20 in March 2016, April 2016, May 2016, and December 2016, respectively, to help provide interpretive clarifications on the new guidance in ASC Topic 606. Autodesk currently plans to adopt ASU 2014-09 as of February 1, 2018, using the modified retrospective transition method. In terms of Autodesk's evaluation efforts, the Company has assigned internal resources in addition to the engagement of third party service providers to assist in the evaluation. The Company's preliminary assessment is that there should be no material change in the timing and amount of the recognition of revenue for the majority of the Company's product subscription offerings and enterprise arrangements. This preliminary assessment is based on the Company's analysis that the related software and cloud services in a majority of the product subscription and enterprise arrangements are not distinct in the context of the contract as they are considered highly interrelated and represent a single combined performance obligation that should be recognized over time. Due to the complexity of certain contracts, the actual revenue recognition treatment required under the new standard for these arrangements may be dependent on contract-specific terms and vary in some instances. A limited number of Autodesk's product subscriptions do not incorporate substantial cloud services, and under ASU 2014-09 will be recognized as distinct license and service performance obligations. Revenue allocated to the licenses in these offerings will be recognized at a point in time instead of over the contract term. While we are still evaluating, Autodesk believes the impact of the change to timing of revenue recognition for these limited offerings, and other revenue streams that Autodesk is currently evaluating, may have a material balance sheet impact on the adoption date with the application of the modified retrospective transition method. It is not expected to have a material impact to reported revenue in subsequent reporting periods. Another significant provision under ASU 2014-09 includes the capitalization and amortization of costs associated with obtaining a contract, such as sales commission. The Company expects there to be a material balance sheet impact at the period of adoption capturing the sales commission capitalization and is currently evaluating the magnitude at implementation. Furthermore, the Company has made and will continue to make investments in systems and processes to enable timely and accurate reporting under the new standard. The Company currently expects that necessary operational and internal control structural changes will be implemented prior to the adoption date.

Basis of Presentation (Tables)

9 Months Ended

Oct. 31, 2017

Schedule of Changes in Revenue and Cost of Revenue



	Three Months Ended October 31, 2016							Nine Months Ended October 31, 2016
	Previously Reported		Change in Presentation Reclassification			Current Presentation		Previously Reported		Change in Presentation Reclassification			Current Presentation
Net revenue:
Maintenance (1)	N/A		$	273.2		$	273.2	N/A		$	835.1		$	835.1
Subscription	$	319.5	(207.1		)	112.4		$	967.5	(667.8		)	299.7
License and other	170.1		(66.1		)	104.0		584.7		(167.3		)	417.4
Total	$	489.6	$	—		$	489.6	$	1,552.2	$	—		$	1,552.2

Cost of revenue:
Maintenance and subscription (2)	$	35.1	$	11.7		$	46.8	$	113.1	$	27.1		$	140.2
License and other	46.4		(22.1		)	24.3		145.9		(59.1		)	86.8
Amortization of developed technology (1)	N/A		10.4			10.4		N/A		32.0			32.0
Total	$	81.5	$	—		$	81.5	$	259.0	$	—		$	259.0

_______________


(1)	These lines were not previously reported in the Condensed Consolidated Statement of Operations.

(2)

Previously, titled "Subscription."

Financial Instruments (Tables)

9 Months Ended

Oct. 31, 2017

Cost And Fair Value Of Financial Instruments Disclosure



			October 31, 2017
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value			Level 1		Level 2			Level 3
Cash equivalents (1):
	Certificates of deposit		63.1		—		—			63.1			63.1		—			—
	Corporate debt securities		8.0		—		—			8.0			8.0		—			—
	Commercial paper		166.5		—		—			166.5			—		166.5			—
	Custody cash deposit		0.9		—		—			0.9			0.9		—			—
	Money market funds		144.8		—		—			144.8			—		144.8			—
	U.S. government securities		250.0		—		—			250.0			250.0		—			—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	7.5		—		—			7.5			7.5		—			—
		Asset backed securities	30.4		—		—			30.4			—		30.4			—
		Certificates of deposit	4.0		—		—			4.0			4.0		—			—
		Commercial paper	31.3		—		—			31.3			—		31.3			—
		Corporate debt securities	218.7		0.1		(0.1		)	218.7			218.7		—			—
		Municipal bonds	15.5				—			15.5			15.5		—			—
		Sovereign debt	6.0		—		—			6.0			—		6.0			—
		U.S. government securities	58.8		—		—			58.8			58.8		—			—
	Short-term trading securities
		Mutual funds	49.1		7.4		—			56.5			56.5		—			—
	Long-term available-for-sale
		Agency bonds	12.2		—		—			12.2			12.2		—			—
		Asset backed securities	60.8		—		(0.1		)	60.7			—		60.7			—
		Corporate debt securities	143.1		0.2		(0.1		)	143.2			143.2		—			—
		Municipal bonds	12.8		—		(0.1		)	12.7			12.7		—			—
		Sovereign debt	2.7		—		—			2.7			—		2.7			—
		U.S. government securities	32.9		—		(0.1		)	32.8			32.8		—			—
Convertible debt securities (2)			8.4		0.6		—			9.0			—		—			9.0
Derivative contract assets (3)			2.4		7.2		(0.5		)	9.1			—		7.1			2.0
Derivative contract liabilities (4)			—		—		(8.9		)	(8.9		)	—		(8.9		)	—
		Total	$	1,329.9	$	15.5	$	(9.9	)	$	1,335.5		$	883.9	$	440.6		$	11.0

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Condensed Consolidated Balance Sheets.


(2)	Considered “available-for-sale” and included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets” or “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(4)	Included in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.



			January 31, 2017
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value			Level 1		Level 2			Level 3
Cash equivalents (1):
	Agency bonds		$	6.0	$	—	$	—		$	6.0		$	6.0	$	—		$	—
	Certificates of deposit		63.1		—		—			63.1			63.1		—			—
	Commercial paper		207.4		—		—			207.4			—		207.4			—
	Corporate debt securities		40.2		—		—			40.2			40.2		—			—
	Custody cash deposit		3.2		—		—			3.2			3.2		—			—
	Money Market funds		256.5		—		—			256.5			—		256.5			—
	Municipal bonds		5.0		—		—			5.0			5.0		—			—
	Sovereign debt		15.0		—		—			15.0			—		15.0			—
	U.S. government securities		309.5		—		—			309.5			309.5		—			—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	13.2		—					13.2			13.2		—			—
		Asset backed securities	19.6		—		—			19.6			—		19.6			—
		Certificates of deposit	157.3		—		—			157.3			157.3		—			—
		Commercial paper	109.2		—		—			109.2			—		109.2			—
		Corporate debt securities	234.7		—		(0.2		)	234.5			234.5		—			—
		Municipal bonds	43.4		—		—			43.4			43.4		—			—
		Sovereign debt	30.0		—		—			30.0			—		30.0			—
		U.S. government securities	32.3		—		—			32.3			32.3		—			—
	Short-term trading securities
		Mutual funds	44.8		2.5		—			47.3			47.3		—			—
	Long-term available-for-sale
		Agency bonds	7.1		—		—			7.1			7.1		—			—
		Asset backed securities	65.8		0.1		—			65.9			—		65.9			—
		Corporate debt securities	172.1		0.1		(0.1		)	172.1			172.1		—			—
		Municipal bonds	10.7		—		—			10.7			10.7		—			—
		Sovereign debt	1.5		—		—			1.5			—		1.5			—
		U.S. government securities	48.8		0.1		—			48.9			48.9		—			—
Convertible debt securities (2)			4.9		2.3		(1.6		)	5.6			—		—			5.6
Derivative contract assets (3)			2.2		12.3		(1.3		)	13.2			—		11.9			1.3
Derivative contract liabilities (4)			—		—		(10.4		)	(10.4		)	—		(10.4		)	—
		Total	$	1,903.5	$	17.4	$	(13.6	)	$	1,907.3		$	1,193.8	$	706.6		$	6.9

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Condensed Consolidated Balance Sheets.


(2)	Considered “available-for-sale” and included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets,” “Other assets,” or “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.

(4)

Included in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.

Fair Value, Assets Measured on Recurring Basis

A reconciliation of the change in Autodesk’s Level 3 items for the nine months ended October 31, 2017 follows:



	Fair Value Measurements Using Significant Unobservable Inputs
	(Level 3)
		Derivative Contracts			Convertible Debt Securities			Total
Balances, January 31, 2017		$	1.3		$	5.6		$	6.9
Purchases		1.1			5.9			7.0
Losses included in earnings		(0.4		)	(2.4		)	(2.8		)
Losses included in OCI		—			(0.1		)	(0.1		)
Balances, October 31, 2017		$	2.0		$	9.0		$	11.0

Available-for-sale Securities

The following table summarizes the estimated fair value of Autodesk's “available-for-sale securities” classified by the contractual maturity date of the security:



	October 31, 2017
	Cost		Fair Value
Due within 1 year	$	377.4	$	377.9
Due in 1 year through 5 years	259.4		259.3
Due in 5 years through 10 years	5.7		5.7
Due after 10 years	2.6		2.6
Total	$	645.1	$	645.5

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The fair values of derivative instruments in Autodesk’s Condensed Consolidated Balance Sheets were as follows as of October 31, 2017 and January 31, 2017:



	Balance Sheet Location	Fair Value at
	Balance Sheet Location	October 31, 2017		January 31, 2017
Derivative Assets
Foreign currency contracts designated as cash flow hedges	Prepaid expenses and other current assets	$	4.4	$	10.1
Derivatives not designated as hedging instruments	Prepaid expenses and other current assets and Other assets	4.7		3.2
Total derivative assets		$	9.1	$	13.3
Derivative Liabilities
Foreign currency contracts designated as cash flow hedges	Other accrued liabilities	$	8.5	$	4.5
Derivatives not designated as hedging instruments	Other accrued liabilities	0.4		6.0
Total derivative liabilities		$	8.9	$	10.5

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance



	Foreign Currency Contracts
	Three Months Ended October 31,					Nine Months Ended October 31,
	2017		2016			2017			2016
Amount of gain (loss) recognized in accumulated other comprehensive (loss) income on derivatives (effective portion)	$	2.9	$	1.8		$	(8.5	)	$	(3.1	)
Amount and location of gain (loss) reclassified from accumulated other comprehensive (loss) income into (loss) income (effective portion)
Net revenue	$	2.4	$	1.0		$	7.2		$	8.4
Operating expenses	2.9		1.5			(0.3		)	0.2
Total	$	5.3	$	2.5		$	6.9		$	8.6
Amount and location of gain (loss) recognized in (loss) income on derivatives (ineffective portion and amount excluded from effectiveness testing)
Interest and other expense, net	$	—	$	(0.1	)	$	(0.1	)	$	(0.5	)



	Three Months Ended October 31,					Nine Months Ended October 31,
	2017		2016			2017			2016
Amount and location of gain (loss) recognized in (loss) income on derivatives
Interest and other expense, net	$	0.9	$	(1.4	)	$	(7.4	)	$	(12.3	)

- Definition

+ References + Details

Stock-based Compensation Expense (Tables)

9 Months Ended

Oct. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of restricted stock activity for the nine months ended October 31, 2017 is as follows:



	Unvested Restricted Stock Units		Weighted average grant date fair value per share
	(in thousands)
Unvested restricted stock units at January 31, 2017	7,622.4		$	60.13
Granted	2,036.6		106.45
Vested	(3,156.6	)	57.21
Canceled/Forfeited	(534.3	)	67.05
Performance Adjustment (1)	24.7		61.79
Unvested restricted stock units at October 31, 2017	5,992.8		$	78.94

_______________


(1)	Based on Autodesk's financial results and relative total stockholder return for the fiscal 2017 performance period. The performance stock units were attained at rates ranging from 99.7% to 114.7% of the target award.

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity

A summary of the ESPP activity for three and nine months ended October 31, 2017 and 2016 is as follows:



	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
Issued shares	0.9		1.1		2.0		2.3
Average price of issued shares	$	39.92	$	37.36	$	39.03	$	36.99
Weighted average grant date fair value of awards granted under the ESPP (1)	$	33.04	$	20.75	$	32.41	$	19.20

_______________

(1)

Calculated as of the award grant date using the Black-Scholes Merton (“BSM") option pricing model.

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The following table summarizes stock-based compensation expense for the three and nine months ended October 31, 2017 and 2016, respectively, as follows:



	Three Months Ended October 31,					Nine Months Ended October 31,
	2017			2016		2017			2016
Cost of maintenance and subscription revenue (1)	$	2.8		$	2.2	$	8.5		$	6.2
Cost of license and other revenue (1)	1.0			1.3		3.1			4.1
Marketing and sales	27.7			24.2		80.1			69.0
Research and development	20.1			20.9		61.7			60.0
General and administrative	13.5			8.0		46.1			23.2
Stock-based compensation expense related to stock awards and ESPP purchases	65.1			56.6		199.5			162.5
Tax benefit	(1.3		)	—		(1.6		)	—
Stock-based compensation expense related to stock awards and ESPP purchases, net of tax	$	63.8		$	56.6	$	197.9		$	162.5

_______________


(1)	Prior periods have been adjusted to conform with the current period's presentation. See Note 1, "Basis of Presentation," for additional information.

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

Autodesk uses the following assumptions to estimate the fair value of stock-based awards:



	Three Months Ended October 31, 2017		Three Months Ended October 31, 2016
	Performance Stock Unit (1)	ESPP	Performance Stock Unit (1)	ESPP
Range of expected volatilities	N/A	31.7 - 33.4%	N/A	31.0 - 33.9%
Range of expected lives (in years)	N/A	0.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	N/A	—%	N/A	—%
Range of risk-free interest rates	N/A	1.2 - 1.4%	N/A	0.5 - 0.8%
	Nine Months Ended October 31, 2017		Nine Months Ended October 31, 2016
	Performance Stock Unit	ESPP	Performance Stock Unit	ESPP
Range of expected volatilities	31.8%	31.4 - 33.7%	38.4 - 38.6%	30.0 - 40.2%
Range of expected lives (in years)	N/A	0.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	—%	—%	—%	—%
Range of risk-free interest rates	1.0 - 1.2%	0.9 - 1.4%	0.6 - 0.7%	0.5 - 0.9%

_______________


(1)	Autodesk did not grant PSUs that were subject to market conditions in the three months ended October 31, 2017 or 2016.

Other Intangible Assets, Net (Tables)

9 Months Ended

Oct. 31, 2017

Schedule of Finite-Lived Intangible Assets

Other intangible assets including developed technologies, customer relationships, trade names, patents, user lists and the related accumulated amortization were as follows:



	October 31, 2017			January 31, 2017
Developed technologies, at cost	$	577.0		$	583.6
Customer relationships, trade names, patents, and user lists, at cost (1)	367.1			375.9
Other intangible assets, at cost (2)	944.1			959.5
Less: Accumulated amortization	(882.5		)	(862.0		)
Other intangible assets, net	$	61.6		$	97.5

_______________


(1)	Included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.


(2)	Includes the effects of foreign currency translation.

Goodwill (Tables)

9 Months Ended

Oct. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table summarizes the changes in the carrying amount of goodwill for the nine months ended October 31, 2017:



Balance as of January 31, 2017	$	1,710.3
Less: accumulated impairment losses as of January 31, 2017	(149.2		)
Net balance as of January 31, 2017	1,561.1
Additions arising from acquisitions during the period	—
Effect of foreign currency translation, purchase accounting adjustments, and other during the period	27.6
Balance as of October 31, 2017	$	1,588.7

Computer Equipment, Software, Furniture and Leasehold Improvements, Net (Tables)

9 Months Ended

Oct. 31, 2017

Property, Plant and Equipment

Computer equipment, software, furniture, leasehold improvements and the related accumulated depreciation were as follows:



	October 31, 2017			January 31, 2017
Computer hardware, at cost	$	210.8		$	206.1
Computer software, at cost	70.5			73.5
Leasehold improvements, land and buildings, at cost	221.9			206.3
Furniture and equipment, at cost	61.9			58.2
	565.1			544.1
Less: Accumulated depreciation	(417.0		)	(385.5		)
Computer software, hardware, leasehold improvements, furniture and equipment, net	$	148.1		$	158.6

Restructuring charges and other facility exit costs, net (Tables)

9 Months Ended

Oct. 31, 2017

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Related Costs

The following table sets forth the restructuring charges and other lease termination exit costs during the nine months ended October 31, 2017:



	Balances, January 31, 2017		Additions		Payments			Adjustments (1)			Balances, October 31, 2017
Fiscal 2017 Plan
Employee termination costs	$	1.1	$	0.1	$	(1.4	)	$	0.2		$	—
Lease termination and other exit costs	1.9		0.1		(1.4		)	(0.3		)	0.3
Other Lease Termination Costs
Lease termination costs	4.5		0.3		(2.3		)	(0.2		)	2.3
Total	$	7.5	$	0.5	$	(5.1	)	$	(0.3	)	$	2.6
Current portion (2)	$	5.9									$	2.4
Non-current portion (2)	1.6										0.2
Total	$	7.5									$	2.6

____________________


(1)	Adjustments primarily include the impact from a change in sublease assumptions related to certain lease terminations.

(2)

The current and non-current portions of the reserve are recorded in the Condensed Consolidated Balance Sheets under “Other accrued liabilities” and “Other liabilities,” respectively.

Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Oct. 31, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss, net of taxes, consisted of the following at October 31, 2017:



	Net Unrealized Gains (Losses) on Derivative Instruments			Net Unrealized Gains (Losses) on Available-for-Sale Securities			Defined Benefit Pension Components			Foreign Currency Translation Adjustments			Total
Balances, January 31, 2017	$	14.6		$	1.5		$	(33.8	)	$	(160.8	)	$	(178.5	)
Other comprehensive (loss) income before reclassifications	(10.2		)	0.7			(0.1		)	38.8			29.2
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss	(6.9		)	—			0.1			0.1			(6.7		)
Tax effects	1.7			(0.3		)	—			(0.9		)	0.5
Net current period other comprehensive (loss) income	(15.4		)	0.4			—			38.0			23.0
Balances, October 31, 2017	$	(0.8	)	$	1.9		$	(33.8	)	$	(122.8	)	$	(155.5	)

Net Loss Per Share (Tables)

9 Months Ended

Oct. 31, 2017

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

The following table sets forth the computation of the numerators and denominators used in the basic and diluted net loss per share amounts:



	Three Months Ended October 31,						Nine Months Ended October 31,
	2017			2016			2017			2016
Numerator:
Net loss	$	(119.8	)	$	(142.8	)	$	(393.4	)	$	(408.7	)
Denominator:
Denominator for basic net loss per share—weighted average shares	219.6			222.3			219.7			223.3
Effect of dilutive securities (1)	—			—			—			—
Denominator for dilutive net loss per share	219.6			222.3			219.7			223.3
Basic net loss per share	$	(0.55	)	$	(0.64	)	$	(1.79	)	$	(1.83	)
Diluted net loss per share	$	(0.55	)	$	(0.64	)	$	(1.79	)	$	(1.83	)

____________________

(1)

Segment, Geographic and Product Family Information (Tables)

9 Months Ended

Oct. 31, 2017

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area

Information regarding Autodesk’s revenue by geographic area and product family is as follows:



	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
Net revenue by geographic area:
Americas
U.S.	$	182.4	$	182.2	$	546.8	$	562.1
Other Americas	32.2		31.1		91.9		99.0
Total Americas	214.6		213.3		638.7		661.1
Europe, Middle East and Africa	205.4		191.0		594.4		614.1
Asia Pacific	95.3		85.3		269.7		277.0
Total net revenue	$	515.3	$	489.6	$	1,502.8	$	1,552.2

Net revenue by product family:
Architecture, Engineering and Construction	$	215.4	$	212.3	$	628.7	$	684.4
Manufacturing	146.9		146.6		436.0		481.5
AutoCAD and AutoCAD LT	102.7		80.1		290.7		239.1
Media and Entertainment	37.7		34.2		112.1		103.6
Other	12.6		16.4		35.3		43.6
	$	515.3	$	489.6	$	1,502.8	$	1,552.2

Subsequent Events (Tables)

9 Months Ended

Oct. 31, 2017