Revenues - Summary of Subscription and Support and Geographic Location Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
Disaggregation of Revenue [Line Items]
Total revenues	$ 9,829	$ 9,133
Americas
Disaggregation of Revenue [Line Items]
Total revenues	6,469	6,062
Europe
Disaggregation of Revenue [Line Items]
Total revenues	2,337	2,145
Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenues	1,023	926
Subscription and support
Disaggregation of Revenue [Line Items]
Total revenues	9,297	8,585
Sales
Disaggregation of Revenue [Line Items]
Total revenues	2,131	1,998
Service
Disaggregation of Revenue [Line Items]
Total revenues	2,334	2,182
Platform and Other
Disaggregation of Revenue [Line Items]
Total revenues	1,963	1,718
Marketing and Commerce
Disaggregation of Revenue [Line Items]
Total revenues	1,325	1,282
Integration and Analytics
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,544	$ 1,405