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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Provision from income taxes $ 57,778 $ 62,355 $ 26,620 $ 38,838  
Net discrete tax (expense) benefit 9,000 800 12,800 2,800  
Reasonably possible changes to unrecognized tax benefits related to settlement of tax audits and/or expiration of statutes of limitations within the next twelve months $ 11,500   $ 11,500    
Prepaid expenses and other current assets | New Accounting Pronouncement, Early Adoption, Effect          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
DTA - current   203,500   203,500 $ 195,800
Other noncurrent assets | New Accounting Pronouncement, Early Adoption, Effect          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
DTA - noncurrent   199,600   199,600 193,600
Accounts Payable and Accrued Liabilities | New Accounting Pronouncement, Early Adoption, Effect          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
DTL - current   100   100  
Other noncurrent liabilities | New Accounting Pronouncement, Early Adoption, Effect          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
DTL - noncurrent   $ 3,800   $ 3,800 $ 2,200