Intangible Assets Acquired Through Business Combinations and Goodwill - Summary of Intangible Assets Acquired From Business Combinations (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2026	Apr. 30, 2025
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, gross, beginning balance	$ 14,139
Additions and retirements, net	396
Intangible assets, gross, ending balance	14,535
Accumulated amortization, beginning balance	(7,324)
Expense and retirements, net	(561)
Accumulated amortization, ending balance	(7,885)
Intangible assets, net, beginning balance	6,815
Intangible assets, net, ending balance	$ 6,650
Weighted Average Remaining Useful Life (Years)	5 years 4 months 24 days
Amortization of intangible assets	$ 561	$ 395
Acquired developed technology
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, gross, beginning balance	4,796
Additions and retirements, net	260
Intangible assets, gross, ending balance	5,056
Accumulated amortization, beginning balance	(2,407)
Expense and retirements, net	(244)
Accumulated amortization, ending balance	(2,651)
Intangible assets, net, beginning balance	2,389
Intangible assets, net, ending balance	$ 2,405
Weighted Average Remaining Useful Life (Years)	4 years 4 months 24 days
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, gross, beginning balance	$ 8,659
Additions and retirements, net	125
Intangible assets, gross, ending balance	8,784
Accumulated amortization, beginning balance	(4,640)
Expense and retirements, net	(261)
Accumulated amortization, ending balance	(4,901)
Intangible assets, net, beginning balance	4,019
Intangible assets, net, ending balance	$ 3,883
Weighted Average Remaining Useful Life (Years)	6 years 3 months 18 days
Other
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, gross, beginning balance	$ 684
Additions and retirements, net	11
Intangible assets, gross, ending balance	695
Accumulated amortization, beginning balance	(277)
Expense and retirements, net	(56)
Accumulated amortization, ending balance	(333)
Intangible assets, net, beginning balance	407
Intangible assets, net, ending balance	$ 362
Weighted Average Remaining Useful Life (Years)	1 year 9 months 18 days

Salesforce, Inc. 10-Q