Income Taxes - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 07, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Contingency [Line Items]
Income taxes paid	$ 3.3	$ 81.9	$ 118.2	$ 34.8
Income taxes refunded	0.1	69.2	1.3	0.5
Federal, state and local, and foreign tax loss carryforwards		69.3	63.9
Federal, state and local, and foreign tax loss carryforwards not subject to expiration		38.5
Federal, state and local, and foreign tax loss carryforwards subject to expiration		30.8
Valuation allowances		39.4	36.6
Unrecognized tax benefits	14.3	18.6	18.9	17.1	$ 5.4
Unrecognized tax benefits that would impact effective tax rate		17.9
Interest expense related to unrecognized tax benefits	$ 0.1	0.8	0.6	$ 0.3
Accrued interest related to unrecognized tax benefits		1.3	0.7
Net Operating Losses and Capital Loss Carryforwards
Income Tax Contingency [Line Items]
Valuation allowances		38.8	36.1
Foreign Tax Authority
Income Tax Contingency [Line Items]
Capital loss carryforwards		$ 13.3	$ 10.2