Annual report pursuant to Section 13 and 15(d)

Debt - Interest Expense (Details)

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Debt - Interest Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Debt Disclosure [Abstract]      
Total interest cost $ 972 $ 936 $ 902
Capitalized interest (87) (203) (288)
Total interest expense, net $ 885 $ 733 $ 614