Employee and Director Stock Plans - Options Outstanding (Details) - $ / shares shares in Millions		Jan. 31, 2016	Jan. 31, 2015
Number of securities to be issued upon exercise of outstanding options		9.3
Weighted Average Exercise Price		$ 37.06	$ 34.46
Shares available for future issuance		62.9
Equity Compensation Plans Approved by Security Holders
Number of securities to be issued upon exercise of outstanding options		9.3
Weighted Average Exercise Price		$ 37.06
Shares available for future issuance	[1]	62.9
ESP Plan
Shares available for future issuance		43.3

[1] Included in this amount are 43.3 million securities available for future issuance under Autodesk’s ESP Plan.