Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jan. 31, 2023	Jan. 31, 2022
Deferred tax assets:
Net operating loss carryforwards	$ 817	$ 955
Capitalized research expenditures	189	0
Stock-based compensation	52	48
Operating lease liabilities	43	50
Other reserves and accruals	31	40
Research and development and other credits	113	92
Total deferred tax assets	1,245	1,185
Valuation allowance	(1,078)	(904)
Total deferred tax assets, net	167	281
Deferred tax liabilities:
Convertible debt	0	(91)
Deferred commissions	(77)	(68)
Other deferred tax liabilities	(5)	(3)
Operating lease right-of-use assets	(31)	(37)
Depreciation and amortization	(56)	(78)
Total deferred tax liabilities	(169)	(277)
Net deferred tax liability	$ (2)
Net deferred tax asset		$ 4