Investments Low Income Housing Tax Credits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Low Income Housing Tax Credits [Abstract]
Affordable Housing Tax Credits	$ 0.1	$ 1.1	$ 8.0
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration]	Change in Income Taxes	Change in Income Taxes	Change in Income Taxes
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]	Income Tax Expense (Benefit)	Income Tax Expense (Benefit)	Income Tax Expense (Benefit)
Amortization of Affordable Housing Tax Credit Investments	$ 0.0	$ (0.5)	$ (5.9)
Tax Benefits from Low Income Housing Investments	$ 0.1	$ 0.6	$ 2.1
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Cash Flows [Extensible Enumeration]	Change in Income Taxes	Change in Income Taxes	Change in Income Taxes
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)