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Debt - Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Carrying Amount [Member] | Senior Secured Credit Facilities    
Financial liabilities:    
Credit facility $ 4,462.0 $ 4,722.7
Carrying Amount [Member] | 5.5% Senior Notes due 2027    
Financial liabilities:    
Senior notes 1,997.9 1,997.3
Carrying Amount [Member] | 6.5% senior notes due 2032    
Financial liabilities:    
Senior notes 742.8 0.0
Fair Value [Member] | Senior Secured Credit Facilities    
Financial liabilities:    
Credit facility 4,498.8 4,774.4
Fair Value [Member] | 5.5% Senior Notes due 2027    
Financial liabilities:    
Credit facility 2,002.2 1,974.0
Fair Value [Member] | 6.5% senior notes due 2032    
Financial liabilities:    
Credit facility $ 776.6 $ 0.0