Leases - Summary of Lease Cost (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lease, Cost [Abstract]
Operating lease cost	$ 44.0	$ 46.0
Short-term lease cost	10.0	8.0
Variable lease cost	4.0	2.0
Sublease income	(2.0)	(2.0)
Total lease cost	$ 57.0	$ 55.0