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Summary of Significant Accounting Policies - Allowance for Credit Losses - Securities (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Accounting Policies [Abstract] |  |
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Taxable interest income |
Accrued interest on held to maturity debt securities | $ 4.3 | $ 3.7
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Taxable interest income |
Accrued interest on available for sale debt securities | $ 5.7 | $ 5.0

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