Stockholders' Equity - Schedule of Accumulated Other Comprehensive Loss Balances, Net of Tax (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ 6,339.6
Net current period other comprehensive income (loss)	(114.9)	$ 123.8	$ (308.1)
Ending balance	6,534.9	6,339.6
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(424.5)	(549.0)
Net current period other comprehensive income (loss)	(115.1)	124.5
Ending balance	(539.6)	(424.5)	(549.0)
Defined Benefit Obligation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(1.8)	(1.1)
Net current period other comprehensive income (loss)	0.2	(0.7)
Ending balance	(1.6)	(1.8)	(1.1)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(426.3)	(550.1)
Net current period other comprehensive income (loss)	(114.9)	123.8
Ending balance	$ (541.2)	$ (426.3)	$ (550.1)