Derivative Instruments - Narrative (Details) - USD ($) $ in Millions	Jan. 31, 2026	Jan. 31, 2025
Derivatives, Fair Value [Line Items]
Net gain expected to be recognized in next 24 months	$ (17)
Designated as hedging instrument
Derivatives, Fair Value [Line Items]
Derivative, notional amount	2,060	$ 1,520
Not Designated as Hedging Instrument | Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 858	$ 1,140