Derivative Instruments - Schedule of Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Derivatives, Fair Value [Line Items]
Amount of gain (loss) recognized in accumulated other comprehensive loss, net of tax, (effective portion)	$ 1	$ (41)	$ 40
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	14	57	36
Interest and other income (expense), net	$ 22	$ 9	$ 7
Interest and other income (expense), net	Interest and other income (expense), net	Interest and other income (expense), net	Interest and other income (expense), net
Net revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	$ 19	$ 57	$ 60
Cost of revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	0	0	(3)
Operating expenses
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	$ (5)	$ 0	$ (21)