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Financial and Derivative Instruments (Details 2) - Commodity - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments |  |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | $ (11) | $ (182) | $ (256) | $ (203)
Sales and other operating revenues |  |  |  |
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments |  |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | (6) | (165) | (244) | (177)
Purchased crude oil and products |  |  |  |
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments |  |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | (2) | (18) | (9) | (26)
Other income |  |  |  |
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments |  |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | $ (3) | $ 1 | $ (3) | $ 0

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