Operating Segments and Geographic Data (Details 2) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Segment Earnings	$ 2,649	$ 3,638
Operating Segments
Segment Reporting Information [Line Items]
Segment Earnings	3,375	4,080
Operating Segments \| Upstream
Segment Reporting Information [Line Items]
Segment Earnings	3,123	3,352
Operating Segments \| Upstream \| United States
Segment Reporting Information [Line Items]
Segment Earnings	748	648
Operating Segments \| Upstream \| International
Segment Reporting Information [Line Items]
Segment Earnings	2,375	2,704
Operating Segments \| Downstream
Segment Reporting Information [Line Items]
Segment Earnings	252	728
Operating Segments \| Downstream \| United States
Segment Reporting Information [Line Items]
Segment Earnings	217	442
Operating Segments \| Downstream \| International
Segment Reporting Information [Line Items]
Segment Earnings	35	286
All Other
Segment Reporting Information [Line Items]
Interest expense	(214)	(149)
Interest income	50	19
Other	$ (562)	$ (312)

Segment earnings, other income (expense).

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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