Interest and Other Income (Expense), net (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Other Income and Expenses [Abstract]
Interest and investment income, net	$ 20	$ 28	$ 26
Gain on foreign currency	7	6	10
Loss on strategic investments	(9)	(10)	(32)
Other income	7	6	4
Interest and other income, net	$ 25	$ 30	$ 8