Accumulated Other Comprehensive Income - Changes in AOCI (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 636.2
Ending Balance	631.4
Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	2.6
Other comprehensive income (loss) before reclassifications	(6.2)
Amounts reclassified from accumulated other comprehensive income (loss)	2.8
Ending Balance	6.0
Foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	2.5
Other comprehensive income (loss) before reclassifications	(2.8)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0
Ending Balance	(0.3)
Unrealized gain (loss) on interest rate swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(2.2)
Other comprehensive income (loss) before reclassifications	9.1
Amounts reclassified from accumulated other comprehensive income (loss)	2.9
Ending Balance	(4.0)
Unrealized gain (loss) on cross currency swap
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	2.3
Other comprehensive income (loss) before reclassifications	1.7
Amounts reclassified from accumulated other comprehensive income (loss)	0.1
Ending Balance	0.7
Realized gain (loss) on cross-currency swap
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	0.0
Other comprehensive income (loss) before reclassifications	1.6
Amounts reclassified from accumulated other comprehensive income (loss)	0.0
Ending Balance	$ 1.6