Investments Low Income Housing Tax Credits (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Low Income Housing Tax Credits [Abstract]
Affordable Housing Tax Credits	$ 2.0	$ 5.4	$ 4.1	$ 10.8
Amortization of Affordable Housing Tax Credit Investments	(1.5)	(3.7)	(3.0)	(7.4)
Tax Benefits from Low Income Housing Investments	$ 0.5	$ 1.7	$ 1.1	$ 3.4