Property and Equipment, Net and Other Balance Sheet Accounts (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 6,823	$ 6,918
Less accumulated depreciation and amortization	(3,703)	(3,682)
Property and equipment, net	3,120	3,236
Depreciation amortization expense	1,200	1,000	$ 1,100
Accrued compensation	3,300	2,800
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	357	293
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	500	492
Computers, equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,104	4,345
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	245	232
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,617	$ 1,556

Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided.

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