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Derivative Instruments and Hedging Activities - Additional Information (Detail)
€ in Millions, £ in Millions, ZAR in Millions, CAD in Millions, AUD in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2017
USD ($)
Mar. 31, 2017
Jun. 30, 2017
USD ($)
Agreement
Jun. 30, 2017
CAD
Agreement
Jun. 30, 2017
AUD
Agreement
Jun. 30, 2017
GBP (£)
Agreement
Jun. 30, 2017
EUR (€)
Agreement
Jun. 30, 2017
ZAR
Agreement
Dec. 31, 2016
USD ($)
Derivatives, Fair Value [Line Items]                  
Hedge ineffectiveness in earnings     $ 0            
Amount estimated reclassified as an increase to interest expense     1,200,000            
Fair value of derivatives in net liability position     $ 300,000           $ 1,400,000
Maximum time frame for derivatives     13 months            
Option Collars | Euro Member Countries, Euro                  
Derivatives, Fair Value [Line Items]                  
Notional amount | €             € 30    
Forward Contracts | Euro Member Countries, Euro                  
Derivatives, Fair Value [Line Items]                  
Notional amount | €             € 30    
Forward Contracts | Australia, Dollars                  
Derivatives, Fair Value [Line Items]                  
Notional amount | AUD         AUD 60        
Forward Contracts | Canada, Dollars                  
Derivatives, Fair Value [Line Items]                  
Notional amount | CAD       CAD 35          
Forward Contracts | South Africa, Rand                  
Derivatives, Fair Value [Line Items]                  
Notional amount | ZAR               ZAR 611.7  
Forward Contracts | United Kingdom, Pounds                  
Derivatives, Fair Value [Line Items]                  
Notional amount | £           £ 55      
Interest rate swap                  
Derivatives, Fair Value [Line Items]                  
Variable-rate debt upon conversion $ 625,000,000                
Term Loan A-1 Facility | 2.73% Interest Rate Swaps Matures on March 31, 2020 | Cash Flow Hedging                  
Derivatives, Fair Value [Line Items]                  
Variable-rate debt upon conversion     $ 450,000,000            
Maturity date     Mar. 31, 2020            
Fixed interest rate     2.73% 2.73% 2.73% 2.73% 2.73% 2.73%  
Number of interest rate swap arrangements | Agreement     9 9 9 9 9 9  
Derivative notional amount     $ 50,000,000            
Basis point increase in fixed rate based on future changes to the Company's net leverage ratio     0.50%            
Basis point decrease in fixed rate based on future changes to the Company's net leverage ratio     0.25%            
Term Loan A-1 Facility | 3.15% Interest Rate Swap through December 29, 2017                  
Derivatives, Fair Value [Line Items]                  
Maturity date   Dec. 29, 2017              
Fixed interest rate 3.15% 3.15%              
Term Loan A-1 Facility | 4.00% Interest Rate Swap from December 29, 2017 through March 31, 2020                  
Derivatives, Fair Value [Line Items]                  
Maturity date   Mar. 31, 2020              
Fixed interest rate 4.00% 4.00%              
Swaps beginning date   Dec. 29, 2017