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Cash And Cash Equivalents Net Change in Operating Assets and Liabilities (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Accounts receivable $ (1,413) $ 1,667
Accounts receivable from related companies (11) (20)
Inventories 30 281
Other current assets (12) 110
Other non-current assets, net (31) (101)
Accounts payable 1,958 (1,704)
Accounts payable to related companies (7) (21)
Accrued and other current liabilities 194 (233)
Other non-current liabilities 51 37
Derivative assets and liabilities, net (226) 160
Net change in operating assets and liabilities, net of effects of acquisitions $ (533) $ (176)