Quarterly report pursuant to Section 13 or 15(d)

Debt - Interest Expense (Details)

v3.8.0.1
Debt - Interest Expense (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Debt Disclosure [Abstract]        
Total interest cost $ 227 $ 221 $ 662 $ 619
Capitalized interest (74) (107) (225) (390)
Total interest expense, net $ 153 $ 114 $ 437 $ 229