Immaterial Error Correction - Statement of Equity Adjustment (Details) - USD ($) $ in Millions	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total equity	$ 643.9	$ 657.4	$ 651.3	$ 656.9	$ 645.3	$ 641.5
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total equity			654.8	659.3	647.0	643.0
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total equity			(3.5)	(2.4)	(1.7)	(1.5)
Retained Earnings
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total equity	$ 544.0	$ 550.6	549.3	555.5	549.7	543.7
Retained Earnings | As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total equity			552.8	557.9	551.4	545.2
Retained Earnings | Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total equity			$ (3.5)	$ (2.4)	$ (1.7)	$ (1.5)