Income Taxes - Schedule of Changes Affecting the Valuation Allowances on Deferred Tax Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Valuation Allowance [Line Items]
Beginning Balance	$ 10.7
Ending Balance	10.9	$ 10.7
Valuation Allowance Deferred Tax Assets
Valuation Allowance [Line Items]
Beginning Balance	10.7	8.3	$ 8.1
Current year expense	0.2	2.4	0.2
Ending Balance	$ 10.9	$ 10.7	$ 8.3