Goodwill and Intangible Assets - Schedule of Changes in Goodwill (Detail) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2022		Dec. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Balance	$ 2,323.6		$ 2,031.8
Acquisition	0.5	[1]	308.2
Translation	(21.9)		(16.4)
Balance	$ 2,302.2		$ 2,323.6

[1] The purchase accounting was finalized for the ADAM HCM acquisition during the reporting period. Refer to Note 3, "Business Combinations" to our condensed consolidated financial statements for additional information.