Income Taxes - Schedule of Components Of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jan. 31, 2026	Jan. 31, 2025
Income Tax Disclosure [Abstract]
Stock-based compensation	$ 55	$ 55
Research and development tax credit carryforwards	139	109
Foreign tax credit carryforwards	44	20
Accrued compensation and benefits	52	19
Other accruals not currently deductible for tax	18	15
Capitalized research and development	392	696
Fixed assets	12	18
Lease liability	54	61
Tax loss carryforwards	304	14
Deferred revenue	0	427
Purchased technology	55	38
Other	65	40
Total deferred tax assets	1,190	1,512
Less: valuation allowance	(156)	(131)
Net deferred tax assets	1,034	1,381
Indefinite lived intangibles	(166)	(143)
Right-of-use assets	(34)	(37)
Deferred taxes on foreign earnings	(24)	(28)
Other	(8)	0
Total deferred tax liabilities	(232)	(208)
Net deferred tax assets	$ 802	$ 1,173