Derivative Instruments - Schedule of Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Derivatives, Fair Value [Line Items]
Amount of loss recognized in accumulated other comprehensive income, net of tax, (effective portion)	$ (10)	$ (12)	$ (39)	$ (15)
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	5	7	22	13
Interest and other (loss) income, net	4	4	(20)	5
Net revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	(1)	3	12	13
Cost of revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	1	0	2	0
Operating expenses
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	$ 5	$ 4	$ 8	$ 0