Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Disaggregation of Revenue [Line Items]
Total net revenue	$ 7,206	$ 6,131	$ 5,497
Design
Disaggregation of Revenue [Line Items]
Total net revenue	5,980	5,104	4,647
Make
Disaggregation of Revenue [Line Items]
Total net revenue	796	654	523
Other
Disaggregation of Revenue [Line Items]
Total net revenue	430	373	327
Indirect
Disaggregation of Revenue [Line Items]
Total net revenue	2,646	3,568	3,444
Direct
Disaggregation of Revenue [Line Items]
Total net revenue	4,560	2,563	2,053
Americas
Disaggregation of Revenue [Line Items]
Total net revenue	3,178	2,716	2,438
U.S.
Disaggregation of Revenue [Line Items]
Total net revenue	2,566	2,228	1,978
Other Americas
Disaggregation of Revenue [Line Items]
Total net revenue	612	488	460
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total net revenue	2,794	2,307	2,042
Asia Pacific
Disaggregation of Revenue [Line Items]
Total net revenue	1,234	1,108	1,017
Architecture, Engineering, Construction and Operations
Disaggregation of Revenue [Line Items]
Total net revenue	3,583	2,937	2,580
AutoCAD and AutoCAD LT
Disaggregation of Revenue [Line Items]
Total net revenue	1,787	1,572	1,462
Manufacturing
Disaggregation of Revenue [Line Items]
Total net revenue	1,379	1,189	1,063
Media and Entertainment
Disaggregation of Revenue [Line Items]
Total net revenue	332	315	295
Other
Disaggregation of Revenue [Line Items]
Total net revenue	$ 125	$ 118	$ 97