CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 152	$ 252
Other comprehensive income (loss), net of reclassifications:
Net (loss) gain on derivative instruments (net of tax effect of $2 and zero, respectively)	(23)	2
Change in net unrealized loss on available-for-sale debt securities (net of tax effect of zero for all periods presented)	1	(2)
Change in defined benefit pension items (net of tax effect of zero for all periods presented)	1	0
Net change in cumulative foreign currency translation gain (loss) (net of tax effect of $(3) and zero, respectively)	58	(29)
Total other comprehensive gain (loss)	37	(29)
Total comprehensive income	$ 189	$ 223