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Debt - Debt and Average Interest Rates on Debt Outstanding (Detail) - USD ($) $ in Millions	Jul. 08, 2022	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Debt, gross		$ 922.6
Unamortized debt issuance costs and discounts		(11.1)	$ (8.5)
Total debt		911.5	894.1
Line of Credit \| Term Loans Due 2024
Debt Instrument [Line Items]
Debt, gross		$ 200.0
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Average interest rate as of June 30, 2022		2.30%
Debt, gross		$ 215.0	195.0
Term Loans \| Term Loans Due 2024
Debt Instrument [Line Items]
Average interest rate as of June 30, 2022		3.03%
Debt, gross		$ 200.0	200.0
Senior Notes \| Senior Notes 3.150% Due 2022
Debt Instrument [Line Items]
Average interest rate as of June 30, 2022		3.15%
Debt, gross		$ 88.3	88.3
Senior Notes \| Senior Notes 4.650% Due 2025
Debt Instrument [Line Items]
Average interest rate as of June 30, 2022		4.65%
Debt, gross		$ 19.3	19.3
Senior Notes \| Senior Notes 4.500% Due 2029
Debt Instrument [Line Items]
Average interest rate as of June 30, 2022		4.50%
Debt, gross		$ 400.0	$ 400.0
Senior Notes \| Senior Notes Five Point Nine Percent Due Twenty Thirty Two \| Subsequent Event
Debt Instrument [Line Items]
Average interest rate as of June 30, 2022	5.90%
Debt, gross	$ 400.0