XML 75 R59.htm IDEA: XBRL DOCUMENT v3.20.4
Debt - Interest Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Debt Disclosure [Abstract]      
Gross interest cost $ 137,034 $ 138,211 $ 129,571
Capitalized interest (19,996) (11,097) (6,671)
Interest expense $ 117,038 $ 127,114 $ 122,900