Stock-Based Compensation - Stock-Based Compensation Expense in Future for Outstanding Awards (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
2022	$ 21.9
2023	11.8
2024	2.4
2025	1.2
2026	0.5
Total	$ 37.8