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Debt Facilities - Interest Charges (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Debt Disclosure [Abstract]        
Interest expense $ 108,480 $ 120,547 $ 215,818 $ 243,393
Interest capitalized 6,880 5,910 12,911 15,764
Interest charges incurred $ 115,360 $ 126,457 $ 228,729 $ 259,157