CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2026	Apr. 30, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 491	$ 152
Other comprehensive income (loss), net of reclassifications:
Net gain (loss) on derivative instruments (net of tax effect of $(1) and $2, respectively)	10	(23)
Change in net unrealized gain on available-for-sale debt securities (net of tax effect of $(6) and zero, respectively)	1	1
Change in defined benefit pension items (net of tax effect of zero for all periods presented)	0	1
Net change in cumulative foreign currency translation (loss) gain (net of tax effect of $(1) and $(3), respectively)	(13)	58
Total other comprehensive income (loss)	(2)	37
Total comprehensive income (loss)	$ 489	$ 189

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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