Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Apr. 30, 2018	Jun. 04, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2018
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
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		219,145,087

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Millions, $ in Millions

3 Months Ended

Apr. 30, 2018

Apr. 30, 2017

Net revenue:

Total net revenue

$ 559.9

$ 485.7

Cost of revenue:

Amortization of developed technology

3.6

4.7

Total cost of revenue

66.8

78.2

Gross profit

493.1

407.5

Operating expenses:

Marketing and sales

276.4

255.7

Research and development

172.8

187.7

General and administrative

72.9

78.3

Amortization of purchased intangibles

3.8

5.7

Restructuring and other facility exit costs, net

22.5

(0.3)

Total operating expenses

548.4

527.1

Loss from operations

(55.3)

(119.6)

Interest and other expense, net

(8.5)

(1.8)

Loss before income taxes

(63.8)

(121.4)

Provision for income taxes

(18.6)

(8.2)

Net loss

$ (82.4)

$ (129.6)

Basic net loss per share (in usd per share)

$ (0.38)

$ (0.59)

Diluted net loss per share (in usd per share)

$ (0.38)

$ (0.59)

Weighted average shares used in computing basic net loss per share (shares)

218.6

219.9

Weighted average shares used in computing diluted net loss per share (shares)

218.6

219.9

Maintenance and Subscription

Net revenue:

Total net revenue

$ 531.6

$ 437.0

Cost of revenue:

Total cost of revenue

50.4

54.9

Subscription

Net revenue:

Total net revenue

350.4

173.4

Maintenance

Net revenue:

Total net revenue

181.2

263.6

Other

Net revenue:

Total net revenue

28.3

^[1]

48.7

Cost of revenue:

Total cost of revenue

^[2]

$ 12.8

$ 18.6

[1]	Previously labeled as "License and other" in prior periods.
[2]	Previously labeled as "Cost of license and other revenue" in prior periods.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (82.4)	$ (129.6)
Other comprehensive loss (income), net of reclassifications:
Net gain (loss) on derivative instruments (net of tax effect of ($0.7) and $0.5, respectively)	6.0	(1.4)
Change in net unrealized gain on available-for-sale debt securities (net of tax effect of $0.1 and ($0.3), respectively)	0.6	0.7
Change in defined benefit pension items (net of tax effect of ($1.4) and $0.0, respectively)	7.7	(0.5)
Net change in cumulative foreign currency translation (loss) gain (net of tax effect of $0.3 and ($0.3), respectively)	(24.3)	13.4
Total other comprehensive (loss) income	(10.0)	12.2
Total comprehensive loss	$ (92.4)	$ (117.4)

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
Statement of Comprehensive Income [Abstract]
Net gain (loss) on derivative instruments, tax effect	$ (0.7)	$ 0.5
Change in net unrealized gain on available-for-sale debt securities, tax effect	0.1	(0.3)
Change in defined benefit pension items, tax effect	(1.4)	0.0
Net change in cumulative foreign currency translation (loss) gain, tax effect	$ 0.3	$ (0.3)

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Apr. 30, 2018	Jan. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,093.0	$ 1,078.0
Marketable securities	199.9	245.2
Accounts receivable, net	206.7	438.2
Prepaid expenses and other current assets	198.4	116.5
Total current assets	1,698.0	1,877.9
Marketable securities	171.5	190.8
Computer equipment, software, furniture and leasehold improvements, net	158.2	145.0
Developed technologies, net	23.1	27.1
Goodwill	1,604.9	1,620.2
Deferred income taxes, net	67.0	81.7
Other assets	188.7	170.9
Total assets	3,911.4	4,113.6
Current liabilities:
Accounts payable	103.5	94.7
Accrued compensation	127.5	250.9
Accrued income taxes	24.6	28.0
Deferred revenue	1,469.2	1,551.6
Other accrued liabilities	127.8	198.0
Total current liabilities	1,852.6	2,123.2
Long-term deferred revenue	337.2	403.5
Long-term income taxes payable	41.7	41.6
Long-term deferred income taxes	84.8	66.6
Long-term notes payable, net	1,586.6	1,586.0
Other liabilities	137.1	148.7
Stockholders’ deficit:
Common stock and additional paid-in capital	2,001.0	1,952.7
Accumulated other comprehensive loss	(133.8)	(123.8)
Accumulated deficit	(1,995.8)	(2,084.9)
Total stockholders’ deficit	(128.6)	(256.0)
Total liabilities and stockholders' deficit	$ 3,911.4	$ 4,113.6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
Operating activities:
Net loss	$ (82.4)	$ (129.6)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation, amortization and accretion	24.1	28.4
Stock-based compensation expense	54.4	66.8
Deferred income taxes	13.3	(0.4)
Restructuring and other facility exit costs, net	22.5	(0.3)
Other operating activities	10.5	7.3
Changes in operating assets and liabilities
Accounts receivable	231.4	220.9
Prepaid expenses and other current assets	(1.4)	6.2
Accounts payable and accrued liabilities	(227.7)	(133.1)
Deferred revenue	(58.5)	13.3
Accrued income taxes	(3.1)	(34.3)
Net cash (used in) provided by operating activities	(16.9)	45.2
Investing activities:
Purchases of marketable securities	(9.9)	(119.4)
Sales of marketable securities	6.2	100.0
Maturities of marketable securities	68.6	282.6
Capital expenditures	(16.7)	(8.6)
Other investing activities	(0.6)	3.9
Net cash provided by investing activities	47.6	258.5
Financing activities:
Proceeds from issuance of common stock, net of issuance costs	49.1	50.1
Taxes paid related to net share settlement of equity awards	(38.8)	(33.0)
Repurchases of common stock	(22.0)	(195.9)
Net cash used in financing activities	(11.7)	(178.8)
Effect of exchange rate changes on cash and cash equivalents	(4.0)	2.2
Net increase in cash and cash equivalents	15.0	127.1
Cash and cash equivalents at beginning of period	1,078.0	1,213.1
Cash and cash equivalents at end of period	$ 1,093.0	$ 1,340.2

Basis of Presentation	3 Months Ended
Basis of Presentation	Apr. 30, 2018
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 April 30, 2018, and for the three months ended April 30, 2018 and 2017, 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 months ended April 30, 2018 are not necessarily indicative of the results for the entire fiscal year ending January 31, 2019, or for any other period. Further, the balance sheet as of January 31, 2018 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, 2018. 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, 2018, filed on March 22, 2018.

Recently Issued Accounting Standards

3 Months Ended

Apr. 30, 2018

Accounting Changes and Error Corrections [Abstract]

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 three months ended April 30, 2018, that are of significance, or potential significance, to the Company.

Accounting standards adopted

Effective in the first quarter of fiscal 2019, Autodesk adopted FASB 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 new guidance was adopted prospectively as there was no impact on the Company's prior periods consolidated statements of financial position and results of operations which would be reflected in either the full or modified retrospective transition approach. The future effect of the adoption will depend upon the nature of the Company's future dispositions, if any.

Effective in the first quarter of fiscal 2019, Autodesk adopted FASB 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 new guidance was applied on a prospective basis and did not have an impact on Autodesk's consolidated financial statements during the three months ended April 30, 2018, as no acquisitions were completed. The future effect of the adoption will depend upon the nature of the Company's future acquisitions, if any.

Effective in the first quarter of fiscal 2019, Autodesk adopted FASB 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 new guidance was applied on a modified retrospective basis with a cumulative increase of $1.9 million to the opening balance of "Accumulated deficit" at February 1, 2018. The ASU did not have any other material impacts on Autodesk's consolidated financial statements.

Effective in the first quarter of fiscal 2019, Autodesk adopted FASB Accounting Standards Update No. 2016-01 ("ASU 2016-01") regarding Accounting Standards Codification ("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, unless the measurement alternative method has been elected for equity

investments without readily determinable fair values ("non-marketable equity securities"), 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. Under the measurement alternative method, the non-marketable equity securities will be measured at cost, less any impairment, plus or minus adjustments resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer, which will be recorded within the statement of operations. The determination of whether a transaction is for a similar investment will require significant management judgment including consideration of the rights and obligations between the investments and the extent to which those differences would affect the fair values of those investments with additional consideration for the stage of development of the investee company.

Autodesk prospectively adopted the amendments related to non-marketable equity securities existing as of the date of adoption. The new standard may add volatility to the Company's statements of operations in future periods, due to changes in market prices of the Company's investments in publicly held equity investments and the valuation and timing of observable price changes and impairments of its investments in non-marketable securities. See Note 5, "Financial Instruments" for more information.

Revenue from contracts with customers

Effective in the first quarter of fiscal 2019, Autodesk adopted Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” and the subsequent and related Accounting Standards Update No. 2015-14, 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.

Under Topic 606, the Company has concluded that the desktop software and related substantial cloud functionality that are included in the majority of its product subscription offerings 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. Therefore, the adoption of Topic 606 has not resulted in a 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.

One impact of the new standard relates to product subscriptions that do not incorporate substantial cloud functionality. A limited number of Autodesk's product subscriptions do not incorporate substantial cloud functionality, and therefore are not considered highly interrelated. Under ASU 2014-09, these limited number of product subscriptions are recognized as separate and distinct license and service performance obligations. Under ASC Topic 605, licenses sold with undelivered elements without VSOE are recognized ratably over the term of the undelivered elements. Under ASC Topic 606, Autodesk is no longer required to establish VSOE to recognize software license revenue separately from the other elements and recognizes software licenses once the customer obtains control of the license, which is generally upon delivery of the license. Therefore, revenue allocated to the licenses in these offerings under Topic 606 is recognized at a point in time instead of over the contract term.

Autodesk adopted ASC Topic 606 using the modified retrospective method, with a cumulative decrease of $87.6 million to the opening balance of "Accumulated deficit" at February 1, 2018. Autodesk applied the standard only to contracts that are not completed as of the date of initial application. The comparative information has not been adjusted and continues to be reported under ASC Topic 605. The details of the quantitative impact of the adoption on the three months ended April 30, 2018, are shown below. See Note 3, "Revenue Recognition" for disclosures under the new standard.

Costs to acquire a contract from a customer

With the adoption of Topic 606, Autodesk also adopted Topic 340-40, "Other Assets and Deferred Costs—Contracts with Customers." Prior to the adoption of Topic 340-40, Autodesk previously recognized compensation paid to sales employees and certain resellers related to obtaining customer contracts in marketing and sales expense in the consolidated statements of operations when incurred. Under Topic 340-40, Autodesk capitalizes this sales compensation as contract costs when they are incremental, directly incurred to obtain a contract with a customer and expected to be recoverable. The contract costs are amortized based on the transfer of goods or services to which the contract costs relate.

Under the modified retrospective method, Autodesk booked a cumulative decrease of $90.4 million to the opening balance of "Accumulated deficit" at February 1, 2018. The comparative information has not been adjusted and continues to be reported as incurred. The details of the quantitative impact of the adoption on the three months ended April 30, 2018, are shown below. See Note 10, "Deferred Compensation" for disclosures under the new standard.

Quantitative effect of ASC Topic 606 and 340-40 adoption

The following table shows select line items that were materially impacted by the adoption of ASC Topics 606 and 340-40 on Autodesk’s unaudited Condensed Consolidated Statements of Operations for the three months ended April 30, 2018:



	As Reported			Impact from the adoption of ASC 606 and 340-40			As Adjusted
Net revenue (1)
Subscription	$	350.4		$	6.3		$	356.7
Maintenance	181.2			5.4			186.6
Other	28.3			1.9			30.2
Cost of revenue (1)
Cost of maintenance and subscription revenue	50.4			(0.1		)	50.3
Cost of other revenue	12.8			0.3			13.1
Operating expenses (1):
Marketing and sales	276.4			(13.6		)	262.8
Provision for income taxes	(18.6		)	(4.6		)	(23.2		)
Net loss (2)	$	(82.4	)	$	22.4		$	(60.0	)
Basic net loss per share	$	(0.38	)	$	0.11		$	(0.27	)
Diluted net loss per share	$	(0.38	)	$	0.11		$	(0.27	)

____________________


(1)	While not shown here, gross margin, loss from operations, and loss before income taxes have consequently been effected as a result of the net effect of the adjustments noted above.


(2)	The impact on the unaudited Condensed Consolidated Statements of Comprehensive Loss is limited to the net effects of the impacts noted above on the Condensed Consolidated Statements of Operations, specifically on the line item "Net loss."

The following table shows select line item that were materially impacted by the adoption of ASC Topic 606 and 340-40 on Autodesk’s unaudited Condensed Consolidated Balance Sheet as of April 30, 2018:



	As reported			Impact from the adoption of ASC 606 and 340-40			As Adjusted
ASSETS
Current assets:
Accounts receivable, net	$	206.7		$	67.6		$	274.3
Prepaid expenses and other current assets (1)	198.4			(77.2		)	121.2
Deferred income taxes, net	67.0			10.6			77.6
Other assets (1)	188.7			(21.7		)	167.0
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Current liabilities:
Accrued income taxes	24.6			2.4			27.0
Deferred revenue	1,469.2			103.3			1,572.5
Other accrued liabilities	127.8			2.1			129.9
Long-term deferred revenue	337.2			33.0			370.2
Long-term income taxes payable	41.7			(0.2		)	41.5
Long-term deferred income taxes	84.8			(5.7		)	79.1
Accumulated deficit (2)	(1,995.8		)	(155.6		)	(2,151.4		)

____________________


(1)	Short term and long term "contract assets" under ASC Topic 606 are included within "Prepaid expenses and other current assets" and "Other assets", respectively, on the unaudited Condensed Consolidated Balance Sheet.


(2)	Included in the "Accumulated deficit" adjustment is $178.0 million for the cumulative effect adjustment of adopting ASC Topic 606 and 340-40 on the opening balance as of February 1, 2018.

Adoption of the standard had no impact to net cash (used in) or provided by operating, financing, or investing activities on the Company’s unaudited Condensed Consolidated Statements of Cash Flows.

Recently issued accounting standards not yet adopted

In February 2018, FASB issued Accounting Standards Update No. 2018-02 (“ASU 2018-02”), “Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” The amendment allows entities to reclassify stranded tax effects resulting from the Tax Cuts and Jobs Act from accumulated other comprehensive income to retained earnings. The amendment only impacts the income tax effect of the passage of the Tax Cuts and Jobs Act but does not affect the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations. The amendment is effective for Autodesk's fiscal year beginning February 1, 2019, unless Autodesk elects early adoption, which Autodesk is still evaluating. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption.

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 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.

Revenue Recognition

3 Months Ended

Apr. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Autodesk’s revenue is divided into three categories: subscription revenue, maintenance revenue, and other revenue. Revenue is recognized when control for these offerings is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for products and services.

Our contracts with customers may include promises to transfer multiple products and services to a customer. Determining whether the products and services are considered distinct performance obligations that should be accounted for separately or as one combined performance obligation may require significant judgment. Judgment is required to determine the level of integration and interdependency between individual components of software and cloud functionality. This determination influences whether the software is considered distinct and accounted for separately as a license performance obligation, or not distinct and accounted for together with the cloud functionality as a single subscription performance obligation recognized over time. Certain of our contracts with customers contain multiple performance obligations that are accounted as a single performance obligation because they are part of a series of distinct good and services that are substantially the same and have the same pattern of transfer to the customer.

For bundled contracts with more than one performance obligation, the transaction price is allocated among the performance obligations in an amount that depicts the relative standalone selling prices ("SSP") of each obligation. Judgment is required to determine the SSP for each distinct performance obligation. We use a range of amounts to estimate SSP when we sell each of the products and services separately and need to determine whether there is a discount that should be allocated based on the relative SSP of the various products and services.

In instances where SSP is not directly observable, such as when we do not sell the product or service separately, we determine the SSP using information that includes market conditions and other observable inputs. We typically have more than one SSP for individual products and services due to the stratification of those products and services by customer and circumstance. In these instances, we use relevant information such as the sales channel and geographic region to determine the SSP.

Our indirect channel model includes both a two-tiered distribution structure, where Autodesk sells to distributors who subsequently sells to resellers, and a one-tiered structure where Autodesk sells directly to resellers. For these arrangements, transfer of control begins at the time access to our subscriptions is made available electronically, provided all other criteria for revenue recognition are met. Judgment is required to determine whether our distributors and resellers have the ability to honor their commitment to pay, regardless of whether they collect payment from their customers. If we were to change this assessment, it could cause a material increase or decrease in the amount of revenue that we report in a particular period.

As part of the indirect channel model, we have a partner incentive program that uses quarterly attainment of monetary rewards to motivate distributors and resellers to achieve mutually agreed upon business goals in a specified time period. Incentives related to our subscription program are recorded as a reduction to deferred revenue in the period the subscription transaction is billed, and are subsequently recognized as a reduction to subscription revenue over the contract period. A small portion of partner incentives reduce other revenue in the current period. These incentive balances do not require significant assumptions or judgments. Depending on how the payments are made, the reserves associated with the partner incentive program are recorded on the balance sheet as either contra account receivable or accounts payable.

Revenue Disaggregation

Autodesk recognizes revenue from the sale of (1) product subscriptions, cloud service offerings, and flexible enterprise business arrangements ("EBAs"), (2) renewal fees for existing maintenance plan agreements that were initially purchased with a perpetual software license, and (3) consulting, training and other goods and services. The three categories are presented as line items on Autodesk's unaudited Consolidated Statements of Operations.

Information regarding the components of Autodesk's net revenue from contracts with customers by geographic location, product family, and sales channel is as follows:



	Three Months Ended April 30,
	2018		2017
Net revenue by geographic area:
Americas
U.S.	$	195.9	$	179.8
Other Americas	37.6		30.3
Total Americas	233.5		210.1
Europe, Middle East and Africa	220.9		189.7
Asia Pacific	105.5		85.9
Total net revenue	$	559.9	$	485.7

Net revenue by product family (1):
Architecture, Engineering and Construction	$	221.8	$	185.9
Manufacturing	135.4		128.3
AutoCAD and AutoCAD LT	155.6		129.0
Media and Entertainment	41.8		36.5
Other	5.3		6.0
Total net revenue	$	559.9	$	485.7

Net revenue by sales channel:
Indirect	$	398.3	$	340.1
Direct	161.6		145.6
Total net revenue	$	559.9	$	485.7

____________________


(1)	Due to changes in the go-to-market offerings of our AutoCAD product subscription, prior period balances have been adjusted to conform to current period presentation.

Performance Obligations

For product subscriptions, industry collections, and EBAs in which the desktop software and related cloud functionality are highly interrelated, the combined performance obligation is recognized ratably over the contract term as a stand-ready obligation. For contracts involving distinct software licenses, the license performance obligation is satisfied at a point in time when control is transferred to the customer. For standalone maintenance subscriptions and cloud subscriptions, the performance obligation is satisfied ratably over the contract term as a stand-ready obligation. For consulting services, the performance obligation may be satisfied ratably over the contract term as a stand-ready obligation, or satisfied over a period of time as those services are delivered.

Payments for product subscriptions, industry collections, cloud subscriptions, and maintenance subscriptions are typically due up front with payment terms of 30 to 45 days. Payments on EBAs are typically due in annual installments over the contract term, with payment terms of 30 to 45 days. Autodesk does not have any material variable consideration, such as obligations for returns, refunds, or warranties as of the reporting date.

As of April 30, 2018, Autodesk had total billed and unbilled deferred revenue of $2.2 billion, which represents the total contract price allocated to undelivered performance obligations, which are generally recognized over the next three years. We expect to recognize $1.6 billion or 72% of this revenue during the next 12 months. We expect to recognize the remaining $0.6 billion or 28% of this revenue thereafter.

We expect that the amount of billed and unbilled deferred revenue will change from quarter to quarter for several reasons, including the specific timing, duration and size of large customer subscription and support agreements, varying billing cycles of such agreements, the specific timing of customer renewals, and foreign currency fluctuations.

Contract Balances

We receive payments from customers based on a billing schedule as established in our contracts. Contract assets relate to performance completed in advance of scheduled billings. Contract assets were not material as of April 30, 2018. Deferred revenue relates to payments received in advance of performance under the contract. The primary changes in our contract assets and deferred revenues are due to our performance under the contracts and billings.

Revenue recognized during the three months ended April 30, 2018, that was included in the deferred revenue balances at the beginning of the period, was $493.8 million. The satisfaction of performance obligations typically lags behind payments received under revenue contracts from customers, which may lead to an increase in our deferred revenue balance over time.

Concentration of Credit Risk	3 Months Ended
Concentration of Credit Risk	Apr. 30, 2018
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 34% and 30% of Autodesk’s total net revenue for the three months ended April 30, 2018 and 2017, 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 36% and 31% of trade accounts receivable at April 30, 2018 and January 31, 2018, respectively. No other customer accounted for more than 10% of Autodesk's total net revenue or trade accounts receivable for each of the respective periods.

Financial Instruments

3 Months Ended

Apr. 30, 2018

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 April 30, 2018 and January 31, 2018:



			April 30, 2018
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value			Level 1		Level 2			Level 3
Cash equivalents (1):
	Certificates of deposit		12.0		—		—			12.0			—		12.0			—
	Commercial paper		451.9		—		—			451.9			—		451.9			—
	Custody cash deposit		2.2		—		—			2.2			2.2		—			—
	Municipal bonds		5.0		—		—			5.0			—		5.0			—
	Money market funds		175.2		—		—			175.2			175.2		—			—
	Sovereign debt		11.0		—		—			11.0			—		11.0			—
	U.S. government securities		6.5		—		—			6.5			—		6.5			—
Marketable securities:
	Short-term
		Asset backed securities	9.2		—		—			9.2			—		9.2			—
		Certificates of deposit	3.1		—		—			3.1			—		3.1			—
		Corporate debt securities	83.2		—		(0.2		)	83.0			—		83.0			—
		Municipal bonds	4.2		—		—			4.2			—		4.2			—
		Sovereign debt	5.0		—		—			5.0			—		5.0			—
		U.S. government securities	36.1		—		(0.1		)	36.0			—		36.0			—
	Short-term trading securities
		Mutual funds	52.9		6.5		—			59.4			59.4		—			—
	Long-term
		Agency bonds	13.7		—		(0.1		)	13.6			—		13.6			—
		Asset backed securities	31.7		—		(0.3		)	31.4			—		31.4			—
		Corporate debt securities	88.5		0.2		(0.7		)	88.0			—		88.0			—
		Municipal bonds	12.0		—		(0.2		)	11.8			—		11.8			—
		U.S. government securities	22.7		—		(0.2		)	22.5			—		22.5			—
		Other (2)	4.2		—		—			4.2			—		4.2			—
Convertible debt securities (3)			7.5		1.2		(0.3		)	8.4			—		—			8.4
Derivative contract assets (4)			1.7		10.6		(1.0		)	11.3			—		9.8			1.5
Derivative contract liabilities (5)			—		—		(5.1		)	(5.1		)	—		(5.1		)	—
		Total	$	1,039.5	$	18.5	$	(8.2	)	$	1,049.8		$	236.8	$	803.1		$	9.9

____________________


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


(2)	Consists of certificates of deposit and sovereign debt.


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


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


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



			January 31, 2018
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value			Level 1		Level 2			Level 3
Cash equivalents (1):
	Agency bonds		$	5.0	$	—	$	—		$	5.0		$	5.0	$	—		$	—
	Certificates of deposit		17.4		—		—			17.4			17.4		—			—
	Commercial paper		324.2		—		—			324.2			—		324.2			—
	Corporate debt securities		5.0		—		—			5.0			5.0		—			—
	Custody cash deposit		5.2		—		—			5.2			5.2		—			—
	Money market funds		278.8		—		—			278.8			—		278.8			—
	Municipal bonds		5.0		—		—			5.0			5.0		—			—
	Sovereign debt		2.0		—		—			2.0			—		2.0			—
Marketable securities:
	Short-term
		Asset backed securities	13.1		—		—			13.1			—		13.1			—
		Commercial paper	27.5		—		—			27.5			—		27.5			—
		Corporate debt securities	99.4		—		(0.1		)	99.3			99.3		—			—
		Other (2)	9.2		—		—			9.2			7.7		1.5			—
		U.S. government securities	37.1		—		—			37.1			37.1		—			—
	Short-term trading securities
		Mutual funds	50.1		8.9		—			59.0			59.0		—			—
	Long-term
		Agency bonds	13.7		—		(0.1		)	13.6			13.6		—			—
		Asset backed securities	36.8		—		(0.2		)	36.6			—		36.6			—
		Corporate debt securities	100.2		0.1		(0.4		)	99.9			99.9		—			—
		Municipal bonds	12.7		—		(0.1		)	12.6			12.6		—			—
		Sovereign debt	2.8		—		—			2.8			—		2.8			—
		U.S. government securities	25.5		—		(0.2		)	25.3			25.3		—			—
Convertible debt securities (3)			7.5		0.5		(0.2		)	7.8			—		—			7.8
Derivative contract assets (4)			2.0		7.5		(1.3		)	8.2			—		7.2			1.0
Derivative contract liabilities (5)			—		—		(26.6		)	(26.6		)	—		(26.6		)	—
		Total	$	1,080.2	$	17.0	$	(29.2	)	$	1,068.0		$	392.1	$	667.1		$	8.8

____________________


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


(2)	Consists of agency bonds, certificates of deposit, sovereign debt, and municipal bonds.


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


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


(5)	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. Autodesk reviews for any potential changes on a quarterly basis, in conjunction with our fiscal quarter-end close. As part of this assessment, Autodesk transferred the fair value measurement of $287.2 million between Level 1 to Level 2 and $175.2 million between Level 2 to Level 1 during the three months ended April 30, 2018. It is Autodesk's assessment that the leveling best reflects current market activity when observing the pricing information for these assets.

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 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 three months ended April 30, 2018 follows:



	Fair Value Measurements Using Significant Unobservable Inputs
	(Level 3)
		Derivative Contracts		Convertible Debt Securities		Total
Balances, January 31, 2018		$	1.0	$	7.8	$	8.8
Purchases		—		—		—
Gains included in earnings		0.5		—		0.5
Gains included in OCI		—		0.6		0.6
Balances, April 30, 2018		$	1.5	$	8.4	$	9.9

The following table summarizes the estimated fair value of Autodesk's securities classified by the contractual maturity date of the security:



	April 30, 2018
	Cost		Fair Value
Due within 1 year	$	148.3	$	148.9
Due in 1 year through 5 years	167.9		166.7
Due in 5 years through 10 years	3.7		3.7
Due after 10 years	1.1		1.1
Total	$	321.0	$	320.4

As of April 30, 2018, and January 31, 2018, Autodesk had no material securities, individually and in the aggregate, in a continuous unrealized loss position for greater than twelve months.

There was no loss or gain for the sales or redemptions of securities during the three months ended April 30, 2018. Gains and losses resulting from the sale or redemption of 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 three months ended April 30, 2018 and 2017, were $74.8 million and $382.6 million, respectively.

Non-marketable equity securities

As of April 30, 2018, and January 31, 2018, Autodesk had $114.8 million and $112.3 million, respectively, in direct investments in privately held companies. These non-marketable equity securities investments do not have readily determined

fair value and with the adoption of ASU 2016-01 in the three months ended April 30, 2018, Autodesk elected to use the measurement alternative to account for the adjustment to these investments in a given quarter. See "Note 2. Recently Issued Accounting Standards" for more details on the adoption.

These investments are periodically assessed for impairment based on available information such as current cash positions, earnings and cash flow positions, earnings and cash flow forecasts, recent operational performance and any other readily available market data. Autodesk does not intend to sell these 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. If Autodesk determines that an impairment has occurred, Autodesk writes down the investment to its fair value. During the three months ended April 30, 2018, Autodesk recorded $2.0 million in impairments on its privately held investments. Therefore, Autodesk does not consider the remaining investments to be impaired at April 30, 2018. During the three months ended April 30, 2017, Autodesk recorded $0.5 million in impairments on its privately held investments.

Under the measurement alternative method, investments are measured at cost, less any impairments, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer in the current period. To determine if a transaction is for a similar investment, Autodesk considers the rights and obligations between the investments and the extent to which those differences would affect the fair values of those investments with additional consideration for the stage of development of the investee company. The fair value would then be adjusted positively or negatively based on available information such as pricing in recent rounds of financing. During the three months ended April 30, 2018, Autodesk recorded $4.6 million as a positive adjustment on certain of its privately held investments.

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 $574.6 million at April 30, 2018, and $619.9 million at January 31, 2018. Outstanding contracts are recognized as either assets or liabilities on the balance sheet at fair value. The majority of the net loss of $10.6 million remaining in “Accumulated other comprehensive loss” as of April 30, 2018, 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 $220.9 million at April 30, 2018, and $329.6 million at January 31, 2018.

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 April 30, 2018 and January 31, 2018:



	Balance Sheet Location	Fair Value at
	Balance Sheet Location	April 30, 2018		January 31, 2018
Derivative Assets
Foreign currency contracts designated as cash flow hedges	Prepaid expenses and other current assets	$	4.5	$	6.2
Derivatives not designated as hedging instruments	Prepaid expenses and other current assets and Other assets	6.8		2.0
Total derivative assets		$	11.3	$	8.2
Derivative Liabilities
Foreign currency contracts designated as cash flow hedges	Other accrued liabilities	$	3.1	$	18.7
Derivatives not designated as hedging instruments	Other accrued liabilities	2.0		7.9
Total derivative liabilities		$	5.1	$	26.6

The effects of derivatives designated as hedging instruments on Autodesk’s Condensed Consolidated Statements of Operations were as follows for the three months ended April 30, 2018 and 2017 (amounts presented include any income tax effects):



	Foreign Currency Contracts
	Three Months Ended April 30,
	2018			2017
Amount of gain (loss) recognized in accumulated other comprehensive loss on derivatives (effective portion)	$	6.9		$	(2.1	)
Amount and location of (loss) gain reclassified from accumulated other comprehensive loss into (loss) income (effective portion)
Net revenue	$	(2.5	)	$	2.0
Operating expenses	3.3			(2.7		)
Total	$	0.8		$	(0.7	)
Amount and location of loss recognized in (loss) income on derivatives (ineffective portion and amount excluded from effectiveness testing)
Interest and other expense, net	$	(0.2	)	$	(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 months ended April 30, 2018 and 2017 (amounts presented include any income tax effects):



	Three Months Ended April 30,
	2018		2017
Amount and location of gain (loss) recognized on derivatives in net (loss) income
Interest and other expense, net	$	4.6	$	(1.8	)

Stock-based Compensation Expense

3 Months Ended

Apr. 30, 2018

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

Stock-based Compensation Expense

Restricted Stock Units:

A summary of restricted stock activity for the three months ended April 30, 2018, is as follows:



	Unvested Restricted Stock Units		Weighted average grant date fair value per share
	(in thousands)
Unvested restricted stock units at January 31, 2018	5,670.7		$	82.94
Granted	391.9		143.47
Vested	(712.4	)	82.44
Canceled/Forfeited	(279.7	)	80.85
Performance Adjustment (1)	29.9		101.74
Unvested restricted stock units at April 30, 2018	5,100.4		$	88.55

_______________


(1)	Based on Autodesk's financial results and relative total stockholder return for the fiscal 2018 performance period. The performance stock units were attained at rates ranging from 90.0% to 117.6% of the target award.

The fair value of the shares vested during the three months ended April 30, 2018 and 2017 was $96.2 million and $76.9 million, respectively.

During the three months ended April 30, 2018, Autodesk granted 0.2 million restricted stock units. Autodesk recorded stock-based compensation expense related to restricted stock units of $41.7 million and $50.0 million during the three months ended April 30, 2018 and 2017, respectively. The $50.0 million of stock-based compensation expense for the three months ended April 30, 2017, includes $3.2 million related to the acceleration of eligible restricted stock awards in conjunction with the Company's former CEO's transition agreement.

During the three months ended April 30, 2018, 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. The performance criteria for the performance stock units are based on Annualized Recurring Revenue ("ARR") and free cash flow per share 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 2019 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).

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 $6.5 million and $10.9 million for the three months ended April 30, 2018 and 2017, respectively. The $10.9 million of stock-based compensation expense for the three months ended April 30, 2017, includes $4.6 million related to the acceleration of eligible performance stock awards in conjunction with the Company's former CEO's transition agreement.

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 months ended April 30, 2018 and 2017, is as follows:



	Three Months Ended April 30,
	2018		2017
Issued shares	0.5		1.1
Average price of issued shares	$	88.45	$	38.34
Weighted average grant date fair value of awards granted under the ESPP (1)	$	37.64	$	25.13

_______________


(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 months ended April 30, 2018 and 2017, respectively, as follows:



	Three Months Ended April 30,
	2018			2017
Cost of maintenance and subscription revenue	$	2.7		$	2.8
Cost of other revenue	0.8			1.1
Marketing and sales	24.0			26.4
Research and development	17.8			21.2
General and administrative	9.1			15.3
Stock-based compensation expense related to stock awards and ESPP purchases	54.4			66.8
Tax benefit	(0.4		)	—
Stock-based compensation expense related to stock awards and ESPP purchases, net of tax	$	54.0		$	66.8

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 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 April 30, 2018		Three Months Ended April 30, 2017
	Performance Stock Unit	ESPP	Performance Stock Unit	ESPP
Range of expected volatilities	35.7%	33.5 - 37.5%	31.8%	31.4 - 33.7%
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	2.0%	1.9 - 2.3%	1.0%	0.9 - 1.3%

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 $2.0 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. Autodesk accounts for forfeitures of our stock-based awards as those forfeitures occur.

Income Tax	3 Months Ended
Income Tax	Apr. 30, 2018
Income Tax Disclosure [Abstract]
Income Tax	Income Tax Autodesk had an income tax expense of $18.6 million, relative to pre-tax losses of $63.8 million for the three months ended April 30, 2018, and an income tax expense of $8.2 million, relative to pre-tax losses of $121.4 million for the three months ended April 30, 2017. Income tax expense increased primarily due to the mix of increased worldwide earnings, foreign taxes, and withholding taxes. The variance between April 30, 2017, and April 30, 2018 was mainly due to reversal of foreign withholding tax accruals in April 30, 2017. 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 April 30, 2018, the Company continues to maintain a valuation allowance for the U.S. deferred tax assets. As of April 30, 2018, the Company had $341.3 million of gross unrecognized tax benefits, of which $307.9 million would reduce our valuation allowance, if recognized. The remaining $33.4 million would impact the effective tax rate. 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 is examining 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. The U.S. Tax Cuts and Jobs Act (the “Tax Act”) was signed into law on December 22, 2017, and provides broad and significant changes to the U.S. corporate income tax regime. As of April 30, 2018, Autodesk has not completed the determination of the accounting implications of the Tax Act. The provisional amounts recorded are based on Autodesk’s current interpretation and understanding of the Tax Act and may change as the Company receives additional clarification and implementation guidance and finalizes the analysis of all impacts and positions with regard to the Tax Act. There have been no material changes since January 31, 2018. As additional regulatory guidance is issued, Autodesk will continue to collect and analyze necessary data and may adjust provisional amounts previously recorded in the period in which the adjustments are made. Pursuant to Staff Accounting Bulletin 118 (“SAB 118”), Autodesk will complete the accounting for the tax effects of all provisions of the Tax Act within the required measurement period not to extend beyond one year from the enactment date.