Accumulated Other Comprehensive Loss - Details of Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 344.1
Other comprehensive income (loss) before reclassifications	29.4	$ 8.5
Less: amounts reclassified from accumulated other comprehensive loss	0.2	(0.7)
Other comprehensive income	29.6	7.8
Ending balance	346.5
Unrecognized Pension Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(126.3)	(137.5)
Other comprehensive income (loss) before reclassifications	0.2	(0.2)
Less: amounts reclassified from accumulated other comprehensive loss	1.1	1.0
Other comprehensive income	1.3	0.8
Ending balance	(125.0)	(136.7)
Cumulative Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(837.5)	(760.5)
Other comprehensive income (loss) before reclassifications	36.6	3.5
Less: amounts reclassified from accumulated other comprehensive loss	0.0	0.0
Other comprehensive income	36.6	3.5
Ending balance	(800.9)	(757.0)
Cumulative Translation Adjustment | Intra-entity transactions
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Intra-entity currency translation adjustments in AOCI	7.9	16.9
Unrecognized Losses/Gains on Derivative Instruments | Net investment hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(18.3)	(38.3)
Other comprehensive income (loss) before reclassifications	(5.5)	5.0
Less: amounts reclassified from accumulated other comprehensive loss	0.0	0.0
Other comprehensive income	(5.5)	5.0
Ending balance	(23.8)	(33.3)
Unrecognized Losses/Gains on Derivative Instruments | Cash Flow Hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	3.3	2.4
Other comprehensive income (loss) before reclassifications	(1.9)	0.2
Less: amounts reclassified from accumulated other comprehensive loss	(0.9)	(1.7)
Other comprehensive income	(2.8)	(1.5)
Ending balance	0.5	0.9
Accumulated Other Comprehensive Loss, Net of  Taxes
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(978.8)	(933.9)
Ending balance	$ (949.2)	$ (926.1)