Income Taxes - Unrecognized Tax Benefits Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Gross unrecognized tax benefits at the beginning of the fiscal year	$ 238	$ 217	$ 198
Increases for tax positions of prior years	23	9	9
Decreases for tax positions of prior years	(11)	(3)	0
Increases for tax positions related to the current year	13	21	10
Decreases relating to settlements with taxing authorities	0	(5)	0
Reductions as a result of lapse of the statute of limitations	(2)	(1)	0
Gross unrecognized tax benefits at the end of the fiscal year	$ 261	238	217
Increase of unrecognized tax benefits related to transfer pricing matters		$ 15	$ 10