Revenues - Summary of Subscription and Support and Geographic Location Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Disaggregation of Revenue [Line Items]
Total revenues	$ 10,259	$ 9,444	$ 30,324	$ 27,902
Americas
Disaggregation of Revenue [Line Items]
Total revenues	6,703	6,220	19,908	18,483
Europe
Disaggregation of Revenue [Line Items]
Total revenues	2,470	2,228	7,236	6,557
Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenues	1,086	996	3,180	2,862
Subscription and support
Disaggregation of Revenue [Line Items]
Total revenues	9,726	8,879	28,713	26,228
Agentforce Sales
Disaggregation of Revenue [Line Items]
Total revenues	2,297	2,119	6,695	6,188
Agentforce Service
Disaggregation of Revenue [Line Items]
Total revenues	2,495	2,288	7,287	6,727
Agentforce 360 Platform, Slack and Other
Disaggregation of Revenue [Line Items]
Total revenues	2,180	1,825	6,227	5,329
Agentforce Marketing and Agentforce Commerce
Disaggregation of Revenue [Line Items]
Total revenues	1,361	1,334	4,051	3,924
Agentforce Integration and Agentforce Analytics
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,393	$ 1,313	$ 4,453	$ 4,060