Income Taxes - Schedule Of Roll Forward Of The Deferred Tax Asset Valuation Allowance (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Allowance balance, beginning of year	$ 14.1	$ 14.6	$ 8.5
Provision	0.6	1.5	5.8
Reversals	(8.1)	(1.5)	0.0
Other	(0.6)	(0.5)	0.3
Allowance balance, end of year	$ 6.0	$ 14.1	$ 14.6