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Long-Term Debt - Additional Information (Detail)
1 Months Ended 3 Months Ended 12 Months Ended
Jul. 31, 2015
Mar. 02, 2015
Apr. 14, 2014
USD ($)
Sep. 30, 2014
Mar. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2014
Senior Secured Term Loan Facility [Member]              
Debt Instrument [Line Items]              
Senior secured credit facility     $ 2,100,000,000        
Line of credit facility maturity year     2021        
Debt, interest rate terms         A rate equal to a margin over either (a) a base rate determined by reference to the highest of (1) the JPM prime lending rate, (2) the Federal Funds Effective Rate plus 1/2 of 1.00% and (3) the adjusted LIBOR rate for a one-month interest period plus 1.00% or (b) a LIBOR rate determined by reference to the Reuters LIBOR rate for the interest period relevant to such borrowing.    
Federal funds effective rate description         Federal Funds Effective Rate plus 1/2 of 1.00%    
First lien net leverage ratio, description         First lien net leverage ratio of less than or equal to 4.50 to 1.00    
Debt instrument, floor interest rate     1.00%        
Step-down rate 0.25%   0.25%        
First lien net leverage ratio 4.50   4.50        
Quarterly installments on term loan percentage       0.25%      
Senior Secured Term Loan Facility [Member] | Base Rate [Member]              
Debt Instrument [Line Items]              
Debt instrument, basis spread on variable rate     2.00%        
Senior Secured Term Loan Facility [Member] | LIBOR [Member]              
Debt Instrument [Line Items]              
Debt instrument, basis spread on variable rate     3.00%        
Senior Secured Term Loan Facility [Member] | Maximum [Member] | Base Rate [Member]              
Debt Instrument [Line Items]              
Debt instrument, floor interest rate     2.00%        
Senior Secured Term Loan Facility [Member] | Minimum [Member] | LIBOR [Member]              
Debt Instrument [Line Items]              
Debt instrument, floor interest rate     1.00%        
Senior Secured Revolving Facility [Member]              
Debt Instrument [Line Items]              
Senior secured credit facility     $ 250,000,000        
Line of credit facility maturity year     2019        
First lien net leverage ratio, description         First lien net leverage ratio less than or equal to 5.00 to 1.00    
First lien net leverage ratio   5.00 5.00        
Commitment fee rate   0.375% 0.50%        
Step-down commitment fee rate 0.375%            
Letter of Credit [Member]              
Debt Instrument [Line Items]              
Senior secured credit facility     $ 50,000,000        
Revolving Facility [Member]              
Debt Instrument [Line Items]              
Debt, interest rate terms         A rate equal to a margin over either (a) a base rate determined by reference to the highest of (1) the JPM prime lending rate, (2) the Federal Funds Effective Rate plus 1/2 of 1.00% and (3) the adjusted LIBOR rate for a one-month interest period plus 1.00% or (b) a LIBOR rate determined by reference to the Reuters LIBOR rate for the interest period relevant to such borrowing.    
Federal funds effective rate description         Federal Funds Effective Rate plus 1/2 of 1.00%    
First lien net leverage ratio, description         First lien net leverage ratio of less than or equal to 5.00 to 1.00, 4.50 to 1.00 and 4.00 to 1.00    
Debt instrument, floor interest rate     1.00%        
Step-down rate 0.25% 0.25% 0.25%        
First lien net leverage ratio 4.50 5.00          
Proceeds from letters of credit         $ 14,100,000 $ 14,600,000  
Percentage of fee on letter of credit   2.38%         2.63%
Step-down margin 2.13%            
Revolving Facility [Member] | Base Rate [Member]              
Debt Instrument [Line Items]              
Debt instrument, basis spread on variable rate     1.50%        
Revolving Facility [Member] | LIBOR [Member]              
Debt Instrument [Line Items]              
Debt instrument, basis spread on variable rate     2.50%        
Revolving Facility [Member] | Step-down One [Member]              
Debt Instrument [Line Items]              
First lien net leverage ratio, description         First lien net leverage ratio of less than 5.00 to 1.00    
Step-down rate   0.25%          
First lien net leverage ratio   5.00 5.00        
Revolving Facility [Member] | Step-down Two [Member]              
Debt Instrument [Line Items]              
First lien net leverage ratio, description         First lien net leverage ratio of less than 4.50 to 1.00    
Step-down rate 0.25%            
First lien net leverage ratio 4.50   4.50        
Revolving Facility [Member] | Step-down Three [Member]              
Debt Instrument [Line Items]              
First lien net leverage ratio     4.00