CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2026	Jul. 31, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 492	$ 313	$ 983	$ 465
Other comprehensive income (loss), net of reclassifications:
Net gain (loss) on derivative instruments (net of tax effect of $(1) , $1, $(2), and $3, respectively)	14	(6)	24	(29)
Change in net unrealized gain on available-for-sale debt securities (net of tax effect of zero, zero, $(6), and zero, respectively)	(1)	0	0	1
Change in defined benefit pension items (net of tax effect of zero for all periods presented)	0	0	0	1
Net change in cumulative foreign currency translation (loss) gain (net of tax effect of $(1), $(2), $(2), and $(5), respectively)	(12)	0	(25)	58
Total other comprehensive income (loss)	1	(6)	(1)	31
Total comprehensive income (loss)	$ 493	$ 307	$ 982	$ 496