CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 1,124	$ 1,112	$ 906
Other comprehensive (loss) income, net of reclassifications:
Net (loss) gain on derivative instruments (net of tax effect of $5, $2, and $6)	(41)	1	(41)
Change in net unrealized gain on available-for-sale securities (net of tax effect of zero for all periods presented)	2	0	2
Change in defined benefit pension items (net of tax effect of zero, zero, and $1)	(2)	(1)	(5)
Net change in cumulative foreign currency translation gain (loss) (net of tax effect of $(1), $(1), and $4)	94	(51)	(5)
Total other comprehensive gain (loss)	53	(51)	(49)
Total comprehensive income	$ 1,177	$ 1,061	$ 857