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Debt - Schedule of Current Availability on Debt and Cash (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
Dec. 31, 2018
Debt Disclosure [Abstract]        
Credit facility maximum borrowing capacity $ 3,947,000      
Ability to increase borrowing capacity subject to currency fluctuations and obtaining additional lender commitments 250,000      
Borrowings outstanding 115,000      
Outstanding letters of credit 29,000      
Current availability 4,053,000      
Cash and cash equivalents 549,129 $ 1,088,855 $ 401,190 $ 343,856
Total liquidity $ 4,602,000