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Derivative Instruments - Schedule of Derivative Instruments (Details) - USD ($) $ in Millions | Oct. 31, 2025 | Jan. 31, 2025 | Nov. 01, 2024
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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

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