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Recent Accounting Pronouncements - Additional Information (Detail) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Accounting Standards Update [Extensible List]   us-gaap:AccountingStandardsUpdate201613Member  
Receivables, net $ (614,773)   $ (744,760)
Retained earnings $ (6,914,976)   $ (6,387,612)
Cumulative Effect, Period of Adoption, Adjustment      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Accounting Standards Update [Extensible List] us-gaap:AccountingStandardsUpdate201613Member    
Receivables, net $ 400    
Retained earnings $ 400