Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 2,377.7	$ 2,225.2
Other comprehensive (loss) income before reclassifications and income taxes	(19.2)	(43.0)
Amounts reclassified from accumulated other comprehensive (loss) income before income taxes	(3.1)	(0.5)
Income tax benefit (expense)	0.2	(0.3)
Other comprehensive loss, net of tax	(22.1)	(43.8)
Noncontrolling interest	2.6	0.4
Net current period comprehensive (loss) income, net of income taxes and noncontrolling interest	(19.5)	(43.4)
Ending Balance	2,355.0	2,250.1
Total
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(23.0)	41.3
Ending Balance	(42.5)	(2.1)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(80.3)	(18.0)
Other comprehensive (loss) income before reclassifications and income taxes	(22.6)	(44.4)
Amounts reclassified from accumulated other comprehensive (loss) income before income taxes	0.0	0.0
Income tax benefit (expense)	0.0	0.0
Other comprehensive loss, net of tax	(22.6)	(44.4)
Noncontrolling interest	2.6	0.4
Net current period comprehensive (loss) income, net of income taxes and noncontrolling interest	(20.0)	(44.0)
Ending Balance	(100.3)	(62.0)
Pension and other postretirement liability adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	56.6	63.4
Other comprehensive (loss) income before reclassifications and income taxes	0.2	0.0
Amounts reclassified from accumulated other comprehensive (loss) income before income taxes	(2.2)	(2.2)
Income tax benefit (expense)	0.5	0.6
Other comprehensive loss, net of tax	(1.5)	(1.6)
Noncontrolling interest	0.0	0.0
Net current period comprehensive (loss) income, net of income taxes and noncontrolling interest	(1.5)	(1.6)
Ending Balance	55.1	61.8
Change in fair value of derivative financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	0.7	(4.1)
Other comprehensive (loss) income before reclassifications and income taxes	3.2	1.4
Amounts reclassified from accumulated other comprehensive (loss) income before income taxes	(0.9)	1.7
Income tax benefit (expense)	(0.3)	(0.9)
Other comprehensive loss, net of tax	2.0	2.2
Noncontrolling interest	0.0	0.0
Net current period comprehensive (loss) income, net of income taxes and noncontrolling interest	2.0	2.2
Ending Balance	$ 2.7	$ (1.9)