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Investment Securities - Schedule of Estimated Effective Duration, Investments (Details)	Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]
AFS investment securities portfolio, exclusive of derivatives	2 years 6 months
AFS and HTM investment securities portfolio, exclusive of derivatives	4 years
AFS investment securities portfolio, inclusive of derivatives	2 years
AFS and HTM investment securities portfolio, inclusive of derivatives	3 years 9 months 18 days

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- Definition

Debt Securities, Available-For-Sale And Held-To-Maturity, Impact Of Derivative Instruments, Period Of Expected Future Payments

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- Definition

Debt Securities, Available-For-Sale And Held-To-Maturity, Period Of Expected Future Payments

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Debt Securities, Available-For-Sale, Impact Of Derivative Instruments, Period Of Expected Future Payments

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