Document and Entity Information	6 Months Ended
Document and Entity Information	Jul. 31, 2015	Aug. 26, 2015
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 31, 2015
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2
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		226,199,054

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Net revenue:
License and other	$ 290.5	$ 350.4	$ 617.2	$ 666.6
Subscription	319.0	286.7	638.8	563.0
Total net revenue	609.5	637.1	1,256.0	1,229.6
Cost of revenue:
Cost of license and other revenue	53.0	53.4	106.1	102.7
Cost of subscription revenue	40.0	34.5	78.7	63.9
Total cost of revenue	93.0	87.9	184.8	166.6
Gross profit	516.5	549.2	1,071.2	1,063.0
Operating expenses:
Marketing and sales	240.8	237.6	494.7	463.0
Research and development	193.1	179.3	387.6	349.8
General and administrative	70.1	71.5	146.0	134.0
Amortization of purchased intangibles	8.2	10.1	17.1	21.0
Restructuring charges, net	0	0.8	0	3.1
Total operating expenses	512.2	499.3	1,045.4	970.9
Income from operations	4.3	49.9	25.8	92.1
Interest and other expense, net	(3.4)	(7.0)	(3.1)	(13.6)
Income before income taxes	0.9	42.9	22.7	78.5
Provision for income taxes	(236.4)	(11.6)	(239.1)	(18.9)
Net (loss) income	$ (235.5)	$ 31.3	$ (216.4)	$ 59.6
Basic net (loss) income per share (in usd per share)	$ (1.04)	$ 0.14	$ (0.95)	$ 0.26
Diluted net (loss) income per share (in usd per share)	$ (1.04)	$ 0.13	$ (0.95)	$ 0.26
Weighted average shares used in computing basic net (loss) income per share (shares)	227.0	227.3	227.1	227.1
Weighted average shares used in computing diluted net (loss) income per share (shares)	227.0	232.4	227.1	232.4

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)
In Millions, unless otherwise specified

3 Months Ended

6 Months Ended

Jul. 31, 2015

Jul. 31, 2014

Jul. 31, 2015

Jul. 31, 2014

Statement of Comprehensive Income [Abstract]

Net (loss) income

$ (235.5)

$ 31.3

$ (216.4)

$ 59.6

Other comprehensive (loss) income, net of reclassifications:

Net (loss) gain on derivative instruments (net of tax effect of $0.8, ($0.4), ($0.7) and ($1.1), respectively)

(4.7)

1.8

(10.1)

(1.5)

Change in net unrealized loss on available-for-sale securities (net of tax effect of $0.3, $0.4, $0.2 and $0.0, respectively)

(1.4)

(1.0)

(1.2)

(1.6)

Change in defined benefit pension items

0.3

^[1]

1.0

^[1]

Net change in cumulative foreign currency translation (loss) gain (net of tax effect of $0.7, $0.9, $4.5, and ($0.4), respectively)

(8.5)

(4.1)

(6.7)

6.0

Total other comprehensive (loss) income

(14.3)

(3.3)

(17.0)

2.9

Total comprehensive (loss) income

$ (249.8)

$ 28.0

$ (233.4)

$ 62.5

[1]	Tax effects related to defined benefit pension items were immaterial for each of the periods presented.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Statement of Comprehensive Income [Abstract]
Net gain (loss) on derivative instruments - tax effect	$ 0.8	$ (0.4)	$ (0.7)	$ (1.1)
Change in net unrealized loss on available-for-sale securities, tax effect	0.3	0.4	0.2	0
Net change in cumulative foreign currency translation (loss) gain, tax effect	$ 0.7	$ 0.9	$ 4.5	$ (0.4)

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Jul. 31, 2015	Jan. 31, 2015
Current assets:
Cash and cash equivalents	$ 1,473.1	$ 1,410.6
Marketable securities	916.8	615.8
Accounts receivable, net	394.1	458.9
Deferred income taxes, net	10.0	85.1
Prepaid expenses and other current assets	105.8	100.9
Total current assets	2,899.8	2,671.3
Marketable securities	562.5	273.0
Computer equipment, software, furniture and leasehold improvements, net	158.2	159.2
Developed technologies, net	73.2	86.5
Goodwill	1,473.8	1,456.2
Deferred income taxes, net	4.2	100.0
Other assets	170.1	163.5
Total assets	5,341.8	4,909.7
Current liabilities:
Accounts payable	90.8	100.5
Accrued compensation	172.2	253.3
Accrued income taxes	52.3	28.2
Deferred revenue	881.6	900.8
Other accrued liabilities	116.9	117.3
Total current liabilities	1,313.8	1,400.1
Deferred revenue	354.7	256.3
Long term income taxes payable	124.0	158.8
Long term deferred income taxes	28.9	0
Long term notes payable, net	1,486.2	743.1
Other liabilities	132.1	132.2
Stockholders’ equity:
Preferred stock	0	0
Common stock and additional paid-in capital	1,808.0	1,773.1
Accumulated other comprehensive loss	(70.3)	(53.3)
Retained earnings	164.4	499.4
Total stockholders’ equity	1,902.1	2,219.2
Total liabilities and stockholders' equity	$ 5,341.8	$ 4,909.7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Operating activities:
Net (loss) income	$ (216.4)	$ 59.6
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation, amortization and accretion	74.0	73.3
Stock-based compensation expense	90.9	73.4
Deferred income taxes	197.9	1.1
Restructuring charges, net	0	3.1
Other operating activities	(15.3)	5.5
Changes in operating assets and liabilities, net of business combinations:
Accounts receivable	64.4	76.3
Prepaid expenses and other current assets	(19.4)	(7.8)
Accounts payable and accrued liabilities	(81.5)	(21.5)
Deferred revenue	79.2	68.9
Accrued income taxes	(10.1)	(17.0)
Net cash provided by operating activities	163.7	314.9
Investing activities:
Purchases of marketable securities	(1,314.2)	(684.2)
Sales of marketable securities	187.0	127.3
Maturities of marketable securities	541.0	407.1
Capital expenditures	(29.8)	(31.6)
Acquisitions, net of cash acquired	(37.5)	(548.3)
Other investing activities	(13.1)	(0.7)
Net cash used in investing activities	(666.6)	(730.4)
Financing activities:
Proceeds from issuance of common stock, net of issuance costs	33.2	91.3
Repurchase and retirement of common shares	(207.7)	(204.3)
Proceeds from debt, net of discount	748.3	0
Other financing activities	(6.3)	(1.7)
Net cash provided by (used in) financing activities	567.5	(114.7)
Effect of exchange rate changes on cash and cash equivalents	(2.1)	0.3
Net increase (decrease) in cash and cash equivalents	62.5	(529.9)
Cash and cash equivalents at beginning of fiscal year	1,410.6	1,853.0
Cash and cash equivalents at end of period	$ 1,473.1	$ 1,323.1

Basis of Presentation	6 Months Ended
Basis of Presentation	Jul. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited Condensed Consolidated Financial Statements of Autodesk, Inc. (“Autodesk,” “we,” “us,” “our,” or the “Company”) as of July 31, 2015, and for the three and six months ended July 31, 2015 and 2014, 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 presentation 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 six months ended July 31, 2015 are not necessarily indicative of the results for the entire fiscal year ending January 31, 2016, or for any other period. There have been no material changes 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, 2015. 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, 2015, filed on March 18, 2015. Prior Period Adjustments During the quarter ended April 30, 2015, Autodesk determined that it had not correctly accounted for certain liabilities primarily related to employee benefits and unclaimed property. Accordingly, during the six months ended July 31, 2015, we recorded $5.7 million of additional operating expenses related to prior periods. As these adjustments were related to the correction of errors, Autodesk performed the analysis required by Staff Accounting Bulletin 99, Materiality, and Staff Accounting Bulletin 108, Considering the Effects of Prior Year Misstatements When Quantifying Misstatements in Current Year Financial Statements. Based on this analysis, Autodesk concluded that the effect of the errors was not material to the financial position, results of operations or cash flows of any prior fiscal year from both a quantitative and qualitative perspective and is not anticipated to be material to the full fiscal year 2016.

Recently Issued Accounting Standards	6 Months Ended
Recently Issued Accounting Standards	Jul. 31, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Standards Adopted and 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 six months ended July 31, 2015, that are of significance, or potential significance, to the Company. Accounting Standards Adopted Effective in the second quarter of fiscal 2016, Autodesk elected to early adopt FASB's Accounting Standards Update 2015-03 (“ASU 2015-03”) regarding Subtopic 835-30 “Interest - Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs.” The amendments in ASU 2015-03 require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The standard requires retrospective application and represents a change in accounting principle. The adoption of this ASU resulted in a $4.1 million retrospective reduction of both our other assets and long term notes payable, net, as of January 31, 2015. Recently Issued Accounting Standards In May 2015, the FASB issued Accounting Standards Update No. 2015-07 ("ASU 2015-07") regarding ASC Topic 820 "Fair Value Measurement: Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent)." The amendments in ASU 2015-07 remove the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. The amendments also limit certain disclosures to investments for which the entity has elected to measure at fair value using the net asset value per share practical expedient. The amendments in ASU 2015-07 are effective for annual and interim periods beginning after December 15, 2015. Early adoption is permitted. The amendments should be applied retrospectively by removing from the fair value hierarchy any investments for which fair value is measured using the net asset value per share practical expedient. Autodesk does not expect ASU 2015-07 to have a material impact on its consolidated financial statements. In April 2015, the FASB issued Accounting Standards Update No. 2015-05 ("ASU 2015-05") regarding Subtopic 350-40, “Intangibles - Goodwill and Other - Internal-Use Software: Customer's Accounting for Fees Paid in a Cloud Computing Arrangement.” The amendments in this ASU provide guidance about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The amendments in ASU 2015-05 are effective for annual and interim periods beginning after December 15, 2015. Early adoption is permitted. The amendments in ASU 2015-05 may be applied either prospectively to all arrangements entered into or materially modified after the effective date or retrospectively. Autodesk does not expect ASU 2015-05 to have a material impact on its consolidated financial statements. In May 2014, the FASB issued Accounting Standards Update 2014-09 ("ASU 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. On July 7, 2015, the FASB amended ASU 2014-09 to defer the effective date by one year with early adoption permitted as of the original effective date. ASU 2014-09 will be effective for Autodesk’s fiscal year beginning February 1, 2018 unless we elect the earlier date of February 1, 2017. Autodesk is currently evaluating the accounting, transition and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption, nor the effective date election.

Concentration of Credit Risk	6 Months Ended
Concentration of Credit Risk	Jul. 31, 2015
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 23% and 25% of Autodesk’s total net revenue for the three and six months ended July 31, 2015, respectively, and 26% for both the three and six months ended July 31, 2014. The majority of the net revenue from sales to Tech Data relates to Autodesk’s Platform Solutions and Emerging Business (“PSEB”) segment and is for sales made outside of the United States. In addition, Tech Data accounted for 25% and 22% of trade accounts receivable at July 31, 2015 and January 31, 2015, respectively.

Financial Instruments

6 Months Ended

Jul. 31, 2015

Investments, All Other Investments [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 July 31, 2015 and January 31, 2015:



			July 31, 2015
			Amortized Cost		Gross unrealized gains		Gross unrealized losses			Fair Value		Level 1		Level 2		Level 3
Cash equivalents (1):
	Certificates of deposit		$	277.3	$	—	$	—		$	277.3	$	277.3	$	—	$	—
	Custody cash deposit		20.0		—		—			20.0		20.0		—		—
	Commercial paper		251.5		—		—			251.5		—		251.5		—
	Corporate bonds		6.3		—		—			6.3		6.3		—		—
	Money market funds		402.8		—		—			402.8		—		402.8		—
	Municipal bonds		10.0		—		—			10.0		10.0		—		—
Marketable securities:
	Short-term available-for-sale
		U.S. government agency bonds	38.0		—		—			38.0		38.0		—		—
		Certificate of deposit	255.0		—		—			255.0		255.0		—		—
		Commercial paper	233.8		—		—			233.8		—		233.8		—
		Corporate bonds	287.7		—		(0.2		)	287.5		287.5		—		—
		Sovereign debt	3.2		—		—			3.2		—		3.2		—
		U.S. treasury bills	22.6		—		—			22.6		22.6		—		—
		Municipal bonds	32.0		—		—			32.0		32.0		—		—
	Short-term trading securities
		Mutual funds	40.6		4.1		—			44.7		44.7		—		—
	Long-term available-for-sale
		Agency bond	81.2		0.1		—			81.3		81.3		—		—
		Corporate bonds	340.8		0.2		(0.6		)	340.4		340.4		—		—
		Municipal bonds	2.9		—		—			2.9		2.9		—		—
		U.S. government agency securities	81.6		0.1		—			81.7		81.7		—		—
		Sovereign debt	29.0		—		—			29.0		—		29.0		—
		Asset backed securities	27.2		—		—			27.2		—		27.2		—
Convertible debt securities (2)			3.1		2.0		(1.1		)	4.0		—		—		4.0
Derivative contracts (3)			2.9		4.5		(4.7		)	2.7		—		2.0		0.7
		Total	$	2,449.5	$	11.0	$	(6.6	)	$	2,453.9	$	1,499.7	$	949.5	$	4.7

____________________


(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.



			January 31, 2015
			Amortized Cost		Gross unrealized gains		Gross unrealized losses			Fair Value		Level 1		Level 2		Level 3
Cash equivalents (1):
	Certificates of deposit		$	258.6	$	—	$	—		$	258.6	$	258.6	$	—	$	—
	Custody cash deposit		141.5		—		—			141.5		141.5		—		—
	Commercial paper		161.0		—		—			161.0		—		161.0		—
	Corporate bond		11.5		—		—			11.5		11.5		—		—
	Money market funds		127.3		—		—			127.3		—		127.3		—
Marketable securities:
	Short-term available-for-sale
		Agency bond	37.9		—		—			37.9		37.9		—		—
		Corporate debt securities	148.0		0.1		(0.1		)	148.0		148.0		—		—
		Municipal bonds	29.2		0.1		—			29.3		29.3		—		—
		Certificates of deposit	101.9		—		—			101.9		101.9		—		—
		Commercial paper	258.4		—		—			258.4		—		258.4		—
	Short-term trading securities
		Mutual funds	36.9		3.4		—			40.3		40.3		—		—
	Long-term available-for-sale
		Agency bond	50.6		0.2		—			50.8		50.8		—		—
		Corporate debt securities	199.4		0.6		(0.2		)	199.8		199.8		—		—
		Municipal bonds	13.3		0.1		—			13.4		13.4		—		—
		U.S. government agency securities	8.9		0.1		—			9.0		9.0		—		—
Convertible debt securities (2)			4.7		2.5		(2.1		)	5.1		—		—		5.1
Derivative contracts (3)			3.5		19.5		(7.0		)	16.0		—		15.1		0.9
		Total	$	1,592.6	$	26.6	$	(9.4	)	$	1,609.8	$	1,042.0	$	561.8	$	6.0

____________________


(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,” “Other assets,” or “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 three and six months ended July 31, 2015.

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 six months ended July 31, 2015 was as follows:



	Fair Value Measurements Using Significant Unobservable Inputs
	(Level 3)
		Derivative Contracts			Convertible Debt Securities			Total
Balance at January 31, 2015		$	0.9		$	5.1		$	6.0
Purchases		4.3			6.2			10.5
Settlements		(5.6		)	(7.7		)	(13.3		)
Gains included in earnings		1.1			—			1.1
Gains included in OCI		—			0.4			0.4
Balance at July 31, 2015		$	0.7		$	4.0		$	4.7

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



	July 31, 2015
	Cost		Fair Value
Due within 1 year	$	872.3	$	872.1
Due in 1 year through 5 years	565.8		566.5
Total	$	1,438.1	$	1,438.6

As of July 31, 2015 and January 31, 2015, Autodesk did not have any securities in a continuous unrealized loss position for greater than twelve months.

As of July 31, 2015 and January 31, 2015, Autodesk had $71.7 million and $52.6 million, respectively, in direct investments in privately held companies accounted for under the cost method, which are periodically assessed for other-than-temporary impairment. If Autodesk determines that an other-than-temporary impairment has occurred, Autodesk writes down the investment to its fair value. 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. During the six months ended July 31, 2015, Autodesk recorded $0.2 million in other-than-temporary impairment on its privately held equity investments. During the six months ended July 31, 2014, Autodesk recorded a $3.2 million other-than-temporary impairment on its privately held equity investments.

The sales or redemptions of “available-for-sale securities” during the six months ended July 31, 2015 and 2014 resulted in a loss of $0.3 million and a gain of $0.6 million, respectively. 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 six months ended July 31, 2015 and 2014 were $728.0 million and $534.4 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 on-going 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 $373.6 million at July 31, 2015 and $336.6 million at January 31, 2015. Outstanding contracts are recognized as either assets or liabilities on the balance sheet at fair value. The majority of the net gain of $32.7 million remaining in “Accumulated other comprehensive loss” as of July 31, 2015 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 $1.6 million at July 31, 2015 and $44.6 million at January 31, 2015.

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 income as “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 July 31, 2015 and January 31, 2015:



	Balance Sheet Location	Fair Value at
	Balance Sheet Location	July 31, 2015		January 31, 2015
Derivative Assets
Foreign currency contracts designated as cash flow hedges	Prepaid expenses and other current assets (1)	$	5.0	$	20.4
Derivatives not designated as hedging instruments	Prepaid expenses and other current assets and Other assets	1.2		0.9
Total derivative assets		$	6.2	$	21.3
Derivative Liabilities
Foreign currency contracts designated as cash flow hedges	Other accrued liabilities (2)	$	2.9	$	5.4
Derivatives not designated as hedging instruments	Other accrued liabilities	0.6		—
Total derivative liabilities		$	3.5	$	5.4

____________________


(1)	Considering Autodesk's master netting arrangements, these contracts are presented net settled. The gross balance is $8.8 million and $23.8 million at July 31, 2015 and January 31, 2015, respectively.


(2)	Considering Autodesk's master netting arrangements, these contracts are presented net settled. The gross balance is $6.8 million and $8.7 million at July 31, 2015 and January 31, 2015, respectively.

The effects of derivatives designated as hedging instruments on Autodesk’s Condensed Consolidated Statements of Operations were as follows for the three and six months ended July 31, 2015 and 2014 (amounts presented include any income tax effects):



	Foreign Currency Contracts
	Three Months Ended July 31,						Six Months Ended July 31,
	2015			2014			2015			2014
Amount of gain recognized in accumulated other comprehensive income on derivatives (effective portion)	$	4.4		$	2.8		$	6.7		$	0.2
Amount and location of gain (loss) reclassified from accumulated other comprehensive income into income (effective portion)
Net revenue	$	11.3		$	1.1		$	22.3		$	2.5
Operating expenses	(2.2		)	(0.1		)	(5.5		)	(0.9		)
Total	$	9.1		$	1.0		$	16.8		$	1.6
Amount and location of (loss) gain recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)
Interest and other expense, net	$	(0.2	)	$	0.2		$	(0.3	)	$	0.2

The effects of derivatives not designated as hedging instruments on Autodesk’s Condensed Consolidated Statements of Operations were as follows for the three and six months ended July 31, 2015 and 2014 (amounts presented include any income tax effects):



	Three Months Ended July 31,					Six Months Ended July 31,
	2015		2014			2015		2014
Amount and location of gain (loss) recognized in income on derivatives (1)
Interest and other expense, net	$	2.1	$	(4.8	)	$	0.7	$	(10.6	)

____________________


(1)	Prior period balances have been adjusted to conform to current period presentation.

Stock-based Compensation Expense

6 Months Ended

Jul. 31, 2015

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

Stock-based Compensation Expense

Stock Plans

As of July 31, 2015, Autodesk maintained two active stock plans for the purpose of granting equity awards to employees and to non-employee members of Autodesk’s Board of Directors: the 2012 Employee Stock Plan (“2012 Employee Plan”), which is available only to employees, and the Autodesk 2012 Outside Directors’ Plan (“2012 Directors' Plan”), which is available only to non-employee directors. Additionally, there are two expired or terminated plans with options outstanding. The exercise price of all stock options granted under these plans was equal to the fair market value of the stock on the grant date.

The 2012 Employee Plan was approved by Autodesk's stockholders and became effective on January 6, 2012. On June 10, 2015, Autodesk's stockholders approved an amendment to the 2012 Employee Plan, which increased the number of shares reserved for issuance under the plan by 12.5 million shares. The 2012 Employee Plan replaced the 2008 Employee Stock Plan, as amended ("2008 Plan"), and no further equity awards may be granted under the 2008 Plan. The 2012 Employee Plan reserves up to 45.1 million shares, which includes 39.1 million shares reserved under the 2012 Employee Plan, as well as up to 6.0 million shares forfeited under certain prior employee stock plans during the life of the 2012 Employee Plan. The 2012 Employee Plan permits the grant of stock options, restricted stock units and restricted stock awards. Each restricted stock unit or restricted stock award granted will be counted against the shares authorized for issuance under the 2012 Employee Plan as 1.79 shares. If a granted option, restricted stock unit or restricted stock award expires or becomes unexercisable for any reason, the unpurchased or forfeited shares that were granted may be returned to the 2012 Employee Plan and may become available for future grant under the 2012 Employee Plan. As of July 31, 2015, 23.9 million shares subject to options or restricted stock unit awards have been granted under the 2012 Employee Plan. Options and restricted stock units that were granted under the 2012 Employee Plan vest over periods ranging from immediately upon grant to over a three-year period and options expire 10 years from the date of grant. The 2012 Employee Plan will expire on June 30, 2022. At July 31, 2015, 23.3 million shares were available for future issuance under the 2012 Employee Plan.

The 2012 Directors' Plan was approved by Autodesk's stockholders and became effective on January 6, 2012. The 2012 Directors' Plan replaced the 2010 Outside Directors' Stock Plan, as amended. The 2012 Directors' Plan permits the grant of stock options, restricted stock units and restricted stock awards to non-employee members of Autodesk’s Board of Directors. Each restricted stock unit or restricted stock award granted will be counted against the shares authorized for issuance under the 2012 Directors' Plan as 2.11 shares. As of July 31, 2015, 0.7 million shares subject to restricted stock units have been granted under the 2012 Directors' Plan. Restricted stock units that were granted under the 2012 Directors' Plan vest over one to three years from the date of grant. On March 12, 2015, the Board reduced the number of shares reserved for issuance under the 2012 Directors' Plan by 0.9 million shares, so that 1.7 million shares are now reserved for issuance under the 2012 Directors' Plan. The 2012 Directors' Plan will expire on June 30, 2022. At July 31, 2015, 1.1 million shares were available for future issuance under the 2012 Directors' Plan.

The following sections summarize activity under Autodesk’s stock plans.

Stock Options:

A summary of stock option activity for the six months ended July 31, 2015 is as follows:



	Number of Shares		Weighted average exercise price per share		Weighted average remaining contractual term	Aggregate Intrinsic Value (2)
	(in millions)				(in years)	(in millions)
Options outstanding at January 31, 2015	2.7		$	34.46
Granted (1)	—		—
Exercised	(0.6	)	32.53
Canceled/Forfeited	—		—
Options outstanding at July 31, 2015	2.1		$	35.07	3.9	$	32.1
Options vested and exercisable at July 31, 2015	2.1		$	35.10	3.9	$	32.0
Options available for grant at July 31, 2015	24.4

_______________


(1)	Autodesk did not grant stock options in the six months ended July 31, 2015.


(2)	Represents the total pre-tax intrinsic value, based on Autodesk’s closing stock price of $50.58 per share as of July 31, 2015, which would have been received by the option holders had all option holders exercised their options as of that date.

As of July 31, 2015, compensation cost related to stock options has been fully recognized.

The following table summarizes information about the pre-tax intrinsic value of options exercised and the weighted average grant date fair value per share of options granted during the three and six months ended July 31, 2015 and 2014:



	Three Months Ended July 31,				Six Months Ended July 31,
	2015		2014		2015		2014
Pre-tax intrinsic value of options exercised (1)	$	3.6	$	21.4	$	17.4	$	44.2

_______________


(1)	The intrinsic value of options exercised is calculated as the difference between the exercise price of the option and the market value of the stock on the date of exercise.

The following table summarizes information about options outstanding and exercisable at July 31, 2015:



	Options Vested and Exercisable						Options Outstanding
	Number of Shares (in millions)	Weighted average contractual life (in years)	Weighted average exercise price		Aggregate intrinsic value (1) (in millions)		Number of Shares (in millions)	Weighted average contractual life (in years)	Weighted average exercise price		Aggregate intrinsic value (1) (in millions)
Range of per-share exercise prices:
$12.31 - $29.49	0.7		$	24.05			0.7		$	24.10
$29.50 - $41.62	0.9		39.68				0.9		39.67
$42.39 - $43.81	0.5		43.80				0.5		43.80
	2.1	3.9	$	35.10	$	32.0	2.1	3.9	$	35.07	$	32.1

_______________


(1)	Represents the total pre-tax intrinsic value, based on Autodesk’s closing stock price of $50.58 per share as of July 31, 2015, which would have been received by the option holders had all option holders exercised their options as of that date.

These options will expire if not exercised at specific dates ranging through September 2022.

Restricted Stock Units:

A summary of restricted stock unit activity for the six months ended July 31, 2015 is as follows:



	Unvested Restricted Stock Units		Weighted average grant date fair value per share
	(in thousands)
Unvested restricted stock units at January 31, 2015	7,801.3		$	48.46
Granted	1,118.5		59.47
Vested	(1,584.4	)	41.98
Canceled/Forfeited	(224.4	)	48.47
Performance Adjustment (1)	34.6		54.92
Unvested restricted stock units at July 31, 2015	7,145.6		$	51.24

_______________


(1)	Based on Autodesk's financial results for fiscal 2015, 2014 and 2013 performance period. The performance stock units were earned at 113.8%, 65.8%, and 92.3% of the target award, respectively. The vesting of the 2013 performance stock units was subject to the holders satisfying the remaining service condition of the awards, which ended in March 2015.

For the restricted stock units granted during the six months ended July 31, 2015 and 2014, the weighted average grant date fair value was $59.47 and $50.85, respectively. The fair value of the shares vested during the six months ended July 31, 2015 and 2014 was $93.4 million and $73.4 million, respectively.

During the six months ended July 31, 2015, Autodesk granted 0.7 million restricted stock units. The restricted stock units vest over periods ranging from immediately upon grant to a pre-determined date that is typically within three years from the date of grant. Restricted 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. The fair value of the restricted stock units is primarily expensed ratably over the vesting period. Autodesk recorded stock-based compensation expense related to restricted stock units of $28.0 million and $65.8 million during the three and six months ended July 31, 2015, respectively. Autodesk recorded stock-based compensation expense related to restricted stock units of $28.0 million and $50.9 million during the three and six months ended July 31, 2014, respectively. As of July 31, 2015, total compensation cost not yet recognized of $198.1 million related to non-vested restricted stock units is expected to be recognized over a weighted average period of 1.6 years. At July 31, 2015, the number of restricted stock units granted but unvested was 6.3 million.

During the six months ended July 31, 2015, Autodesk granted 0.4 million performance restricted stock units (“PSUs”) 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. The performance criteria for these grants are based upon billings and subscriptions goals adopted by the Compensation and Human Resource Committee, as well as total stockholder return compared against the S&P Computer Software Select Index (“Relative TSR”). Each PSU covers a three year period:


•	Up to one third of the PSUs may vest following year one, depending upon the achievement of the billings and subscriptions goals for year one as well as 1-year Relative TSR (covering year one).


•	Up to one third of the PSUs may vest following year two, depending upon the achievement of the billings and subscriptions goals for year two as well as 2-year Relative TSR (covering years one and two).


•	Up to one third of the PSUs may vest following year three, depending upon the achievement of the billings and subscriptions goals for year three as well as 3-year Relative TSR (covering years one, two and three).

PSUs 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 a Monte Carlo simulation model since the awards are subject to a market condition. The fair value of the PSUs is expensed using the accelerated attribution over the vesting period. Autodesk recorded stock-based compensation expense related to PSUs of $5.9 million and $11.5 million for the three and six months ended July 31, 2015, respectively. Autodesk recorded stock-based compensation expense related to PSUs of $4.8 million and $7.8 million during the three and six months ended July 31, 2014, respectively. As of July 31, 2015, total compensation cost not yet recognized of $15.8 million related to non-vested performance restricted stock units, is expected to be recognized over a weighted average period of 1.3 years. At July 31, 2015, the number of PSUs granted but not vested was 0.8 million.

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 no less than 85% of fair market value as defined in the ESPP. At July 31, 2015, a total of 39.6 million shares were available for future issuance. This amount automatically increases on the first trading day of each fiscal year by an amount equal to the lesser of 10.0 million shares or 2% of the total of (1) outstanding shares plus (2) any shares repurchased by Autodesk during the prior fiscal year. Under the ESPP, the Company issues shares on the first trading day following March 31 and September 30 of each fiscal year. The ESPP expires during fiscal 2018.

Autodesk issued 1.1 million shares under the ESPP during the six months ended July 31, 2015, with an average price of $36.91 per share. During the six months ended July 31, 2014, Autodesk issued 1.1 million shares under the ESPP, at an average price of $33.66 per share. The weighted average grant date fair value of awards granted under the ESPP was $15.99 during the six months ended July 31, 2015, calculated as of the award grant date using the Black-Scholes Merton (“BSM") option pricing model. The weighted average grant date fair value of awards granted under the ESPP during the six months ended July 31, 2014, calculated as of the award grant date using the BSM option pricing model, was $14.26 per share.

Stock-based Compensation Expense

The following table summarizes stock-based compensation expense for the three and six months ended July 31, 2015 and 2014, respectively, as follows:



	Three Months Ended July 31,
	2015			2014
Cost of license and other revenue	$	1.2		$	1.1
Cost of subscription	1.2			1.0
Marketing and sales	17.3			17.6
Research and development	14.8			13.7
General and administrative	6.2			6.4
Stock-based compensation expense related to stock awards and ESPP purchases	40.7			39.8
Tax benefit	(10.5		)	(10.4		)
Stock-based compensation expense related to stock awards and ESPP purchases, net of tax	$	30.2		$	29.4

	Six Months Ended July 31,
	2015			2014
Cost of license and other revenue	$	2.7		$	2.0
Cost of subscription	2.6			1.8
Marketing and sales	39.0			31.6
Research and development	32.4			24.6
General and administrative	14.2			13.4
Stock-based compensation expense related to stock awards and ESPP purchases	90.9			73.4
Tax benefit	(24.5		)	(19.6		)
Stock-based compensation expense related to stock awards and ESPP purchases, net of tax	$	66.4		$	53.8

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 utilizes 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:



	Six Months Ended July 31, 2015			Six Months Ended July 31, 2014
		Performance Stock Unit	ESPP	Performance Stock Unit	ESPP
Range of expected volatilities		27%	27.7 - 28.2%	30%	30 - 33%
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		0.2%	0.1 - 0.6%	0.1%	0.1 - 0.4%

Autodesk estimates expected volatility for stock-based awards based on the average of the following two measures. The first is a measure of historical volatility in the trading market for the Company’s common stock, and the second is the implied volatility of traded forward call options to purchase shares of the Company’s common stock. The expected volatility for PSUs subject to market conditions includes the expected volatility of Autodesk's peer companies within the S&P Computer Software Select Index.

Autodesk estimates the expected life of stock-based awards using both exercise behavior and post-vesting termination behavior as well as consideration of outstanding options.

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 are ultimately expected to vest. Therefore, Autodesk has developed an estimate of the number of awards expected to cancel prior to vesting (“forfeiture rate”). The forfeiture rate is estimated based on historical pre-vest cancellation experience and is applied to all stock-based awards. The Company estimates forfeitures at the time of grant and revises those estimates in subsequent periods if actual forfeitures differ from those estimates.

Income Tax	6 Months Ended
Income Tax	Jul. 31, 2015
Income Tax Disclosure [Abstract]
Income Tax	Income Tax Autodesk's effective tax rate before discrete items was 25% and 24% during the three and six months ended July 31, 2015, respectively. These rates were lower than the federal statutory tax rate of 35% primarily due to foreign earnings taxed at lower rates. During the three months ended July 31, 2015, Autodesk recorded a valuation allowance against the company's U.S. federal and remaining state deferred tax assets of $213.6 million, of which $205.3 million was recorded as a discrete tax expense. 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 recent cumulative losses in the United States arising from the Company's business model transition as a significant piece of negative evidence. Therefore, in the three months ended July 31, 2015, Autodesk established a valuation allowance against the Company's U.S. federal and remaining state deferred tax assets of $213.6 million. As of July 31, 2015, the Company had $251.1 million of gross unrecognized tax benefits, excluding interest, of which approximately $232.7 million represents the amount of unrecognized tax benefits that would impact the effective tax rate, if recognized. However, this rate impact would be offset 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.