Debt - Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Carrying Amount [Member] | Senior Secured Credit Facilities [Member]
Financial liabilities:
Credit facility	$ 5,350.5	$ 3,974.5
Carrying Amount [Member] | 5.5% Senior Notes due 2027 [Member]
Financial liabilities:
Senior notes	2,000.0	2,000.0
Carrying Amount [Member] | Senior Secured Credit Facilities Revolving Portion [Member]
Financial liabilities:
Credit facility	0.0
Carrying Amount [Member] | Other Indebtedness [Member]
Financial liabilities:
Credit facility	1.2	5.2
Fair Value [Member] | Senior Secured Credit Facilities [Member]
Financial liabilities:
Credit facility	5,112.2	3,943.5
Fair Value [Member] | 5.5% Senior Notes due 2027 [Member]
Financial liabilities:
Credit facility	1,871.4	2,094.8
Fair Value [Member] | Senior Secured Credit Facilities Revolving Portion [Member]
Financial liabilities:
Credit facility	0.0
Fair Value [Member] | Other Indebtedness [Member]
Financial liabilities:
Credit facility	$ 1.2	$ 5.2