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Debt - Face Value of Outstanding Debt (Detail) - USD ($)
3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Debt outstanding $ 3,472,477,000 $ 3,309,248,000
Less current portion of debt outstanding 29,973,000 31,190,000
Face value of long-term debt outstanding 3,532,723,000 3,478,494,000
Less current portion of debt outstanding (60,246,000) (169,246,000)
Senior Secured Credit Facilities [Member] | Term Loan A [Member]    
Debt Instrument [Line Items]    
Debt outstanding $ 577,500,000 585,000,000
Senior Secured Credit Facilities [Member] | Term Loan A [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Basis spread on LIBOR 2.50%  
Senior Secured Credit Facilities [Member] | New Term Loan B [Member]    
Debt Instrument [Line Items]    
Debt outstanding $ 1,895,250,000 0
Senior Secured Credit Facilities [Member] | New Term Loan B [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Basis spread on LIBOR 2.75%  
Senior Secured Credit Facilities [Member] | Prior Term Loan B [Member]    
Debt Instrument [Line Items]    
Debt outstanding $ 0 1,420,896,000
Senior Secured Credit Facilities [Member] | Term Loan B Incremental Term Loan Facility [Member]    
Debt Instrument [Line Items]    
Debt outstanding $ 0 282,354,000
Senior Secured Credit Facilities [Member] | Term Loan B Incremental Term Loan Facility [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Basis spread on LIBOR 3.50%  
Senior Secured Credit Facilities [Member] | Term Loan C [Member]    
Debt Instrument [Line Items]    
Debt outstanding $ 0 49,313,000
Senior Secured Credit Facilities [Member] | Term Loan C [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Basis spread on LIBOR 3.00%  
Senior Secured Credit Facilities [Member] | Revolver, $400 million [Member]    
Debt Instrument [Line Items]    
Credit facility amount $ 400,000,000  
Debt outstanding $ 0 0
Senior Secured Credit Facilities [Member] | Revolver, $400 million [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Basis spread on LIBOR 2.50%  
Senior Secured Notes [Member] | 5.375% Senior Secured Notes Due 2023 [Member]    
Debt Instrument [Line Items]    
Outstanding debt rate 5.375%  
Debt outstanding $ 530,000,000 530,000,000
Senior Secured Notes [Member] | 5.25% Senior Secured Notes Due 2023 [Member]    
Debt Instrument [Line Items]    
Outstanding debt rate 5.25%  
Debt outstanding $ 500,000,000 500,000,000
Mortgage Facility [Member]    
Debt Instrument [Line Items]    
Outstanding debt rate 5.80%  
Debt outstanding $ 0 $ 79,741,000