Debt - Debt and Average Interest Rates on Debt Outstanding (Detail) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Debt, gross	$ 1,957.6
Unamortized debt issuance costs and discounts	(13.3)	$ (14.1)
Total debt	$ 1,944.3	1,638.6
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Average interest rate as of March 31, 2026	4.80%
Debt, gross	$ 582.6	277.7
Term Loans | 5-year Term Loan Facility
Debt Instrument [Line Items]
Average interest rate as of March 31, 2026	5.022%
Debt, gross	$ 575.0	575.0
Senior Notes | Senior Notes 4.500% Due 2029
Debt Instrument [Line Items]
Average interest rate as of March 31, 2026	4.50%
Debt, gross	$ 400.0	400.0
Senior Notes | Senior Notes 5.900%
Debt Instrument [Line Items]
Average interest rate as of March 31, 2026	5.90%
Debt, gross	$ 400.0	$ 400.0