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Investment Securities - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]    
Debt securities, available-for-sale, allowance for credit loss $ 0 $ 0
Debt securities, available-for-sale, allowance for credit loss, not to sell before recovery, credit loss, previously recorded, expense (reversal) 0  
Debt securities, held-to-maturity, allowance for credit loss $ 0