Balance Sheet Components - Schedule of Computer Equipment, Software, Furniture, and Leasehold Improvements, Net (Details) - USD ($) $ in Millions	Apr. 30, 2026	Jan. 31, 2026
Property, Plant and Equipment [Abstract]
Computer equipment, software, furniture, and leasehold improvements, gross	$ 613	$ 604
Less: Accumulated depreciation	(491)	(483)
Computer equipment, software, furniture, and leasehold improvements, net	122	121
Computer hardware, at cost
Property, Plant and Equipment [Abstract]
Computer equipment, software, furniture, and leasehold improvements, gross	91	90
Computer software, at cost
Property, Plant and Equipment [Abstract]
Computer equipment, software, furniture, and leasehold improvements, gross	71	61
Furniture and equipment, at cost
Property, Plant and Equipment [Abstract]
Computer equipment, software, furniture, and leasehold improvements, gross	104	104
Leasehold improvements, land and buildings, at cost
Property, Plant and Equipment [Abstract]
Computer equipment, software, furniture, and leasehold improvements, gross	$ 347	$ 349

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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