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Derivative Instruments - Schedule of Derivative Instruments (Details) - USD ($)
$ in Millions
Oct. 31, 2025
Jan. 31, 2025
Nov. 01, 2024
Fixed-to-floating interest rate swaps | Fair value hedging | Designated as hedging instrument      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Notional amount of derivatives $ 550 $ 850 $ 850