Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Federal:
Current	$ 86	$ 219	$ (1)
Deferred	(97)	(222)	(5)
State:
Current	21	28	2
Deferred	3	(19)	1
Foreign:
Current	206	151	83
Deferred	11	(34)	(12)
Income tax provision	$ 230	$ 123	$ 68