Annual report pursuant to Section 13 and 15(d)

NET CHANGE IN OPERATING ASSETS AND LIABILITIES (Details)

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NET CHANGE IN OPERATING ASSETS AND LIABILITIES (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Net change in operating assets and liabilities      
(Increase) decrease in trade accounts receivable $ 66 $ (141) $ (28)
(Increase) decrease in inventories (171) (355) (142)
(Increase) decrease in prepaid expenses and other assets (221) 506 279
Increase (decrease) in accounts payable and accrued expenses (289) (445) (540)
Increase (decrease) in accrued taxes (12) (153) 750
Increase (decrease) in other liabilities (575) 4,052 (544)
Net change in operating assets and liabilities $ (1,202) $ 3,464 $ (225)