Goodwill and Intangible Assets - Summary of Changes in Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance	$ 8,969.5	$ 8,863.0
Acquisitions completed in the current year	325.7	20.4
Adjustments to prior acquisitions	0.8	(0.8)
Effect of foreign currency translation	(77.9)	86.9
Ending balance	$ 9,218.1	$ 8,969.5