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Income Taxes - Narrative (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
Investment Program, Proportional Amortization Method, Elected [Line Items]          
Amortization Method Qualified Affordable Housing Project Investments $ 192.3   $ 192.3   $ 207.3
Amortization Method Qualified Affordable Housing Project Investments, Amortization $ 4.9 $ 4.2 $ 14.9 $ 12.3  
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration] Prepaid Expense and Other Assets   Prepaid Expense and Other Assets    
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]     Income Tax Expense (Benefit)    
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration]