Subsequent Events	12 Months Ended
	Jan. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events     On February 23, 2021, Autodesk entered into an agreement to acquire Storm UK Holdco Limited, the parent of Innovyze, Inc. (“Innovyze”), a global leader in water infrastructure software, for approximately $1.0 billion, net of cash acquired and subject to working capital and tax closing adjustments. Innovyze provides water infrastructure software, is expected to provide comprehensive water modeling solutions that augments Autodesk’s BIM offerings in civil engineering, and is expected to extend Autodesk’s presence into operations and maintenance of water infrastructure assets. The transaction, which is structured as a cash offer for all the outstanding shares of Storm UK Holdco Limited, is subject to customary closing conditions, including regulatory approvals, and is expected to close in Autodesk’s first quarter of fiscal 2021. Autodesk expects to use readily available cash to fund the transaction.