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Investment Securities - Held-to-Maturity Allowance for Credit Losses (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Held-to-maturity, Allowance for Credit Loss $ 0.9 $ 0.8
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest $ 0.0