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Operating Segments and Geographic Data (Details 1) - USD ($) $ in Millions | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Segment Assets |  |
Segment Assets | $ 256,442 | $ 253,806
Goodwill | 4,531 | 4,531
United States |  |
Segment Assets |  |
Segment Assets | 71,335 | 68,910
International |  |
Segment Assets |  |
Segment Assets | 180,576 | 180,365
Operating Segments |  |
Segment Assets |  |
Segment Assets | 246,455 | 245,549
Operating Segments | Upstream |  |
Segment Assets |  |
Segment Assets | 205,393 | 204,913
Goodwill | 4,531 | 4,531
Operating Segments | Upstream | United States |  |
Segment Assets |  |
Segment Assets | 41,791 | 40,770
Operating Segments | Upstream | International |  |
Segment Assets |  |
Segment Assets | 159,071 | 159,612
Operating Segments | Downstream |  |
Segment Assets |  |
Segment Assets | 41,062 | 40,636
Operating Segments | Downstream | United States |  |
Segment Assets |  |
Segment Assets | 23,862 | 23,202
Operating Segments | Downstream | International |  |
Segment Assets |  |
Segment Assets | 17,200 | 17,434
All Other |  |
Segment Assets |  |
Segment Assets | 9,987 | 8,257
All Other | United States |  |
Segment Assets |  |
Segment Assets | 5,682 | 4,938
All Other | International |  |
Segment Assets |  |
Segment Assets | $ 4,305 | $ 3,319

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