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Operating Segments and Geographic Data (Details 3) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Segment Assets
Segment Assets	$ 256,809	$ 253,863
Goodwill	4,507	4,518
United States
Segment Assets
Segment Assets	75,238	71,560
International
Segment Assets
Segment Assets	177,064	177,785
Operating Segments
Segment Assets
Segment Assets	244,653	240,461
Operating Segments | Upstream
Segment Assets
Segment Assets	201,894	200,973
Goodwill	4,507	4,518
Operating Segments | Upstream | United States
Segment Assets
Segment Assets	44,772	42,594
Operating Segments | Upstream | International
Segment Assets
Segment Assets	152,615	153,861
Operating Segments | Downstream
Segment Assets
Segment Assets	42,759	39,488
Operating Segments | Downstream | United States
Segment Assets
Segment Assets	25,358	23,866
Operating Segments | Downstream | International
Segment Assets
Segment Assets	17,401	15,622
All Other
Segment Assets
Segment Assets	12,156	13,402
All Other | United States
Segment Assets
Segment Assets	5,108	5,100
All Other | International
Segment Assets
Segment Assets	$ 7,048	$ 8,302

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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