Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Federal:
Current	$ (65)	$ 138	$ 86
Deferred	257	(87)	(97)
Total federal	192	51	(11)
State:
Current	(1)	19	21
Deferred	14	(5)	3
Total state	13	14	24
Foreign:
Current	244	229	206
Deferred	30	(22)	11
Total foreign	274	207	217
Income tax provision	$ 479	$ 272	$ 230