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Investments in Qualified Affordable Housing Projects (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Investments in Qualified Affordable Housing Projects |  |  |  |  |
Tax credits and other tax benefits | $ 3.8 | $ 3.6 | $ 11.5 | $ 10.9 |
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration] | Income Tax Expense (Benefit) | Income Tax Expense (Benefit) | Income Tax Expense (Benefit) | Income Tax Expense (Benefit) |
Amortization | $ 3.6 | $ 2.1 | $ 10.5 | $ 6.2 |
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] | Income Tax Expense (Benefit) | Other Noninterest Expense | Income Tax Expense (Benefit) | Other Noninterest Expense |
Carrying value | $ 81.6 |  | $ 81.6 |  | $ 101.8
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration] | Other Assets. |  | Other Assets. |  | Other Assets.
Funding obligation | $ 10.7 |  | $ 10.7 |  | $ 12.5
Percentage of remaining funding obligation expected to be funded | 90.00% |  | 90.00% |  |

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