Revenue Recognition - Contract Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
Disaggregation of Revenue [Line Items]
Net revenue	$ 1,170	$ 989
Design
Disaggregation of Revenue [Line Items]
Net revenue	1,004	865
Make
Disaggregation of Revenue [Line Items]
Net revenue	103	81
Other
Disaggregation of Revenue [Line Items]
Net revenue	63	43
Indirect
Disaggregation of Revenue [Line Items]
Net revenue	769	661
Direct
Disaggregation of Revenue [Line Items]
Net revenue	401	328
Americas
Disaggregation of Revenue [Line Items]
Net revenue	484	391
U.S.
Disaggregation of Revenue [Line Items]
Net revenue	398	324
Other Americas
Disaggregation of Revenue [Line Items]
Net revenue	86	67
Europe, Middle East, and Africa
Disaggregation of Revenue [Line Items]
Net revenue	449	383
Asia Pacific
Disaggregation of Revenue [Line Items]
Net revenue	237	215
Architecture, Engineering and Construction
Disaggregation of Revenue [Line Items]
Net revenue	518	443
AutoCAD and AutoCAD LT
Disaggregation of Revenue [Line Items]
Net revenue	346	285
Manufacturing
Disaggregation of Revenue [Line Items]
Net revenue	225	197
Media and Entertainment
Disaggregation of Revenue [Line Items]
Net revenue	68	55
Other
Disaggregation of Revenue [Line Items]
Net revenue	$ 13	$ 9