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Operating Segments and Geographic Data (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |
Segment Earnings | $ 1,952 | $ 1,283 | $ 6,084 | $ (912)
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment Earnings | 2,303 | 1,519 | 6,794 | (389)
Operating Segments | Upstream |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment Earnings | 489 | 454 | 2,859 | (3,467)
Operating Segments | Upstream | United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment Earnings | (26) | (212) | (48) | (2,175)
Operating Segments | Upstream | International |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment Earnings | 515 | 666 | 2,907 | (1,292)
Operating Segments | Downstream |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment Earnings | 1,814 | 1,065 | 3,935 | 3,078
Operating Segments | Downstream | United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment Earnings | 640 | 523 | 1,743 | 1,307
Operating Segments | Downstream | International |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment Earnings | 1,174 | 542 | 2,192 | 1,771
All Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Interest expense | (30) | (53) | (115) | (120)
Interest income | 13 | 15 | 42 | 47
Other | $ (334) | $ (198) | $ (637) | $ (450)

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