CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 1,112	$ 906	$ 823
Other comprehensive (loss) income, net of reclassifications:
Net gain (loss) on derivative instruments (net of tax effect of $2, $6, and $(7))	1	(41)	40
Change in net unrealized gain on available-for-sale securities (net of tax effect of zero for all periods presented)	0	2	0
Change in defined benefit pension items (net of tax effect of zero, $1, and $1)	(1)	(5)	(3)
Net change in cumulative foreign currency translation loss (net of tax effect of $(1), $4, and zero)	(51)	(5)	(98)
Total other comprehensive loss	(51)	(49)	(61)
Total comprehensive income	$ 1,061	$ 857	$ 762