Derivative Instruments - Schedule of Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Derivatives, Fair Value [Line Items]
Amount of gain (loss) recognized in accumulated other comprehensive loss, net of tax, (effective portion)	$ (41)	$ 1	$ (41)
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	20	14	57
Interest and other income, net	$ 26	$ 22	$ 9
Derivative Gain Loss Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag	Interest and other income, net	Interest and other income, net	Interest and other income, net
Net revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	$ 6	$ 19	$ 57
Cost of revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	3	0	0
Operating expenses
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	$ 11	$ (5)	$ 0