Income Taxes - Net Operating Loss and Tax Credit Carryforwards (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Tax Credit Carryforward [Line Items]
Excess interest	$ 11.3
Other deferred tax assets	3.7
Total tax carryforwards	144.4
Valuation Allowance [Abstract]
Excess interest	(3.7)
Other deferred tax assets	(4.9)
Total tax carryforwards	(106.4)
Domestic Tax Authority
Tax Credit Carryforward [Line Items]
Net operating loss not subject to expiration	0.3
Net operating loss subject to expiration	6.3
Tax credit carryforward	43.8
Alternative minimum tax credit	0.8
Valuation Allowance [Abstract]
Net operating loss not subject to expiration	(0.3)
Net operating loss subject to expiration	(0.1)
Tax credit carryforward	(43.8)
Alternative minimum tax credit		$ (0.1)
Domestic Tax Authority | Capital Loss Carryforward
Tax Credit Carryforward [Line Items]
Capital loss	0.0
Tax credit carryforward	0.0
Valuation Allowance [Abstract]
Capital loss	0.0
Tax credit carryforward	0.0
State and Local Jurisdiction
Tax Credit Carryforward [Line Items]
Net operating loss subject to expiration	6.5
Tax credit carryforward	0.2
Valuation Allowance [Abstract]
Net operating loss subject to expiration	(3.1)
Tax credit carryforward	0.0
Non U.S. Tax Authority
Tax Credit Carryforward [Line Items]
Net operating loss not subject to expiration	70.7
Valuation Allowance [Abstract]
Net operating loss not subject to expiration	(49.7)
Non U.S. Tax Authority | Capital Loss Carryforward
Tax Credit Carryforward [Line Items]
Tax credit carryforward	0.8
Valuation Allowance [Abstract]
Tax credit carryforward	$ (0.7)