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Financial and Derivative Instruments (Details 1) - Commodity - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments |  |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | $ (182) | $ 121 | $ (203) | $ 285
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 | (165) | 116 | (177) | 278
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 | (18) | 6 | (26) | 10
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 | $ 1 | $ (1) | $ 0 | $ (3)

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