Accumulated Other Comprehensive Loss - Schedule of Details of Comprehensive Loss (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ (172.5)
Other comprehensive (loss) income before reclassifications	22.1	$ (60.6)
Less: amounts reclassified from accumulated other comprehensive loss	7.5	6.1	$ 2.8
Other comprehensive income (loss)	29.6	(54.5)	11.4
Balance at end of period	(248.7)	(172.5)
Intra-entity foreign currency translation adjustment	(760.5)	(721.7)
Unrecognized Pension Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	172.5	146.1
Other comprehensive (loss) income before reclassifications	28.7	(32.1)
Less: amounts reclassified from accumulated other comprehensive loss	6.3	5.7
Other comprehensive income (loss)	35.0	(26.4)
Balance at end of period	137.5	172.5	146.1
Cumulative Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	721.7	728.6
Other comprehensive (loss) income before reclassifications	(38.8)	6.9
Less: amounts reclassified from accumulated other comprehensive loss	0.0	0.0
Other comprehensive income (loss)	(38.8)	6.9
Balance at end of period	760.5	721.7	728.6
Cumulative Translation Adjustment | Intra-entity transactions
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Intra-entity foreign currency translation adjustment	(30.2)	37.0	(4.5)
Unrecognized Gain (Losses), on Derivative Instruments for Net Investment Hedge and Cash Flow Hedge | Net Investment Hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	67.5	34.5
Other comprehensive (loss) income before reclassifications	29.2	(33.0)
Less: amounts reclassified from accumulated other comprehensive loss	0.0	0.0
Other comprehensive income (loss)	29.2	(33.0)
Balance at end of period	38.3	67.5	34.5
Unrecognized Gain (Losses), on Derivative Instruments for Net Investment Hedge and Cash Flow Hedge | Cash Flow Hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	1.8	(0.2)
Other comprehensive (loss) income before reclassifications	3.0	(2.4)
Less: amounts reclassified from accumulated other comprehensive loss	1.2	0.4
Other comprehensive income (loss)	4.2	(2.0)
Balance at end of period	(2.4)	1.8	(0.2)
Accumulated  Other Comprehensive  Loss, Net of  Taxes
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	963.5	909.0
Balance at end of period	$ 933.9	$ 963.5	$ 909.0