Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jan. 31, 2025	Jan. 31, 2024
Deferred tax assets:
Net operating loss carryforwards	$ 702	$ 716
Capitalized research expenditures	335	268
Stock-based compensation	41	41
Operating lease liabilities	31	36
Other reserves and accruals	24	21
Research and development and other credits	146	125
Total deferred tax assets	1,279	1,207
Valuation allowance	(1,144)	(1,087)
Total deferred tax assets, net	135	120
Deferred tax liabilities:
Deferred commissions	(99)	(67)
Other deferred tax liabilities	(15)	(5)
Operating lease right-of-use assets	(20)	(21)
Depreciation and amortization	(14)	(35)
Total deferred tax liabilities	(148)	(128)
Net deferred tax liability	$ (13)	$ (8)