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New Accounting Pronouncements - Additional Information (Detail) - USD ($)
$ in Thousands
Jun. 30, 2019
Jan. 01, 2019
New Accounting Pronouncement Early Adoption [Line Items]    
Lease liability $ 1,237,917  
Right-of-use assets $ 1,017,409  
Accounting Standards Update 2016-02 [Member]    
New Accounting Pronouncement Early Adoption [Line Items]    
Lease liability   $ 1,200,000
Right-of-use assets   $ 1,000,000