Deferred Compensation	3 Months Ended
Apr. 30, 2021
Deferred Compensation Arrangements [Abstract]
Deferred Compensation	Deferred Compensation At April 30, 2021, Autodesk had investments in debt and equity securities that are held in a rabbi trust under non-qualified deferred compensation plans and a corresponding deferred compensation liability totaling $91.2 million. Of this amount, $7.6 million was classified as current and $83.6 million was classified as non-current in the Condensed Consolidated Balance Sheets. Of the $81.0 million related to the investments in a rabbi trust as of January 31, 2021, $7.3 million was classified as current and $73.7 million was classified as non-current. The current and non-current asset portions of the investments in debt and equity securities that are held in a rabbi trust under non-qualified deferred compensation plans are recorded in the Condensed Consolidated Balance Sheets under “Prepaid expenses and other current assets” and “Long-term other assets,” respectively. The current and non-current portions of the liability are recorded in the Condensed Consolidated Balance Sheets under “Accrued compensation” and “Long-term other liabilities,” respectively See Note 1 “Basis of Presentation” for a change in the presentation and immaterial correction of an error on the Condensed Consolidated Balance Sheets for investments in debt and equity securities that are held in a rabbi trust.Costs to obtain a contract with a customerSales commissions earned by our internal sales personnel and our reseller partners are considered incremental and recoverable costs of obtaining a contract with a customer. The ending balance of assets recognized from costs to obtain a contract with a customer was $118.1 million as of April 30, 2021, and $120.9 million as of January 31, 2021. These assets are recorded in “Prepaid expenses and other current assets” and “Long-term other assets” in the Condensed Consolidated Balance Sheets. Amortization expense related to assets recognized from costs to obtain a contract with a customer was $25.8 million and $22.8 million during the three months ended April 30, 2021 and 2020, respectively. Autodesk did not recognize any contract cost impairment losses during the three months ended April 30, 2021 and 2020.

Deferred Compensation

3 Months Ended

Apr. 30, 2021

Deferred Compensation Arrangements [Abstract]

Deferred Compensation At April 30, 2021, Autodesk had investments in debt and equity securities that are held in a rabbi trust under non-qualified deferred compensation plans and a corresponding deferred compensation liability totaling $91.2 million. Of this amount, $7.6 million was classified as current and $83.6 million was classified as non-current in the Condensed Consolidated Balance Sheets. Of the $81.0 million related to the investments in a rabbi trust as of January 31, 2021, $7.3 million was classified as current and $73.7 million was classified as non-current. The current and non-current asset portions of the investments in debt and equity securities that are held in a rabbi trust under non-qualified deferred compensation plans are recorded in the Condensed Consolidated Balance Sheets under “Prepaid expenses and other current assets” and “Long-term other assets,” respectively. The current and non-current portions of the liability are recorded in the Condensed Consolidated Balance Sheets under “Accrued compensation” and “Long-term other liabilities,” respectively See Note 1 “Basis of Presentation” for a change in the presentation and immaterial correction of an error on the Condensed Consolidated Balance Sheets for investments in debt and equity securities that are held in a rabbi trust.Costs to obtain a contract with a customerSales commissions earned by our internal sales personnel and our reseller partners are considered incremental and recoverable costs of obtaining a contract with a customer. The ending balance of assets recognized from costs to obtain a contract with a customer was $118.1 million as of April 30, 2021, and $120.9 million as of January 31, 2021. These assets are recorded in “Prepaid expenses and other current assets” and “Long-term other assets” in the Condensed Consolidated Balance Sheets. Amortization expense related to assets recognized from costs to obtain a contract with a customer was $25.8 million and $22.8 million during the three months ended April 30, 2021 and 2020, respectively. Autodesk did not recognize any contract cost impairment losses during the three months ended April 30, 2021 and 2020.