Stockholders’ (Deficit) Equity - Summarizes the Company's Pre-tax Share-based Incentive Compensation Expense and Income Tax Benefit (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total share-based incentive compensation expense	$ 45.8	$ 42.3	$ 34.4
Associated tax benefits recognized	7.5	7.1	5.8
2021 Three-year PSU Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total share-based incentive compensation expense	4.2	0.0	0.0
2020 Three-year PSU Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total share-based incentive compensation expense	4.5	5.3	0.0
2019 Three-year PSU Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total share-based incentive compensation expense	2.2	3.5	4.3
2018 Three-year PSU Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total share-based incentive compensation expense	0.0	1.9	0.2
2017 COO and Chief Executive Officer-Designate New Hire Equity Awards(1)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total share-based incentive compensation expense	0.1	0.2	0.2
SLO Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total share-based incentive compensation expense	2.8	2.2	3.2
Other long-term share-based incentive compensation programs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total share-based incentive compensation expense	$ 32.0	$ 29.2	$ 26.5