Stockholders' Equity - Schedule of Accumulated Other Comprehensive Loss Balances, Net of Tax (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			$ 6,165.4
Net current period other comprehensive income (loss)	$ (234.8)	$ 1.8	(263.0)	$ 10.7
Ending balance	6,055.4		6,055.4
Interest Rate Swap [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(4.8)
Net current period other comprehensive income (loss)			1.5
Ending balance	(3.3)		(3.3)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(237.4)
Net current period other comprehensive income (loss)			(263.4)
Ending balance	(500.8)		(500.8)
Accumulated Other Comprehensive (Loss) Income [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(242.0)
Net current period other comprehensive income (loss)			(263.0)
Ending balance	(505.0)		(505.0)
Defined Benefit Obligation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			0.2
Net current period other comprehensive income (loss)			(1.1)
Ending balance	$ (0.9)		$ (0.9)