Revenue Recognition - Schedule of Contract Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2026	Apr. 30, 2025
Disaggregation of Revenue [Line Items]
Total net revenue	$ 1,934	$ 1,633
Design
Disaggregation of Revenue [Line Items]
Total net revenue	1,612	1,361
Make
Disaggregation of Revenue [Line Items]
Total net revenue	224	179
Other
Disaggregation of Revenue [Line Items]
Total net revenue	98	93
Americas
Disaggregation of Revenue [Line Items]
Total net revenue	844	725
U.S.
Disaggregation of Revenue [Line Items]
Total net revenue	682	585
Other Americas
Disaggregation of Revenue [Line Items]
Total net revenue	162	140
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total net revenue	761	627
Asia Pacific
Disaggregation of Revenue [Line Items]
Total net revenue	329	281
Architecture, Engineering, Construction and Operations
Disaggregation of Revenue [Line Items]
Total net revenue	970	809
AutoCAD and AutoCAD LT
Disaggregation of Revenue [Line Items]
Total net revenue	474	411
Manufacturing
Disaggregation of Revenue [Line Items]
Total net revenue	367	309
Media and Entertainment
Disaggregation of Revenue [Line Items]
Total net revenue	86	76
Other
Disaggregation of Revenue [Line Items]
Total net revenue	$ 37	$ 28