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Segment Information, Activity (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 USD ($) segments | Mar. 31, 2016 USD ($)
Segment Information for our Reportable Segments |  |  |  |
Operating revenues | [1] | $ 21,772 | $ 15,714 |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | 19,428 | 13,507 |
Lower of cost or market inventory valuation adjustment |  | 0 | (293) |
Operating expenses |  | 1,117 | 1,030 |
General and administrative expenses |  | 190 | 156 |
Depreciation and amortization expense |  | 500 | 485 |
Total costs and expenses |  | 21,235 | 14,885 |
Operating income (loss) |  | $ 537 | 829 |
Disclosure of Entity's Reportable Segments (Textual) |  |  |  |
Number of reportable segments | segments |  | 3 |  |
Intersegment Eliminations [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | $ (166) | (113) |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | (166) | (113) |
Corporate, Non-Segment [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | (166) | (113) |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | (166) | (113) |
Operating expenses |  | 0 | 0 |
General and administrative expenses |  | 190 | 156 |
Depreciation and amortization expense |  | 12 | 12 |
Total costs and expenses |  | 36 | 55 |
Operating income (loss) |  | (202) | (168) |
Refining [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | 20,887 | 14,920 |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | 18,641 | 12,799 |
Refining [Member] | Intersegment Eliminations [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | 0 | 0 |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | 166 | 113 |
Refining [Member] | Operating Segments [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | 20,887 | 14,920 |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | 18,807 | 12,912 |
Lower of cost or market inventory valuation adjustment |  |  | (263) |
Operating expenses |  | 984 | 907 |
General and administrative expenses |  | 0 | 0 |
Depreciation and amortization expense |  | 449 | 449 |
Total costs and expenses |  | 20,240 | 14,005 |
Operating income (loss) |  | 647 | 915 |
Ethanol [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | 885 | 794 |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | 787 | 708 |
Ethanol [Member] | Intersegment Eliminations [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | 60 | 34 |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | 0 | 0 |
Ethanol [Member] | Operating Segments [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | 945 | 828 |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | 787 | 708 |
Lower of cost or market inventory valuation adjustment |  |  | (30) |
Operating expenses |  | 109 | 99 |
General and administrative expenses |  | 0 | 0 |
Depreciation and amortization expense |  | 27 | 12 |
Total costs and expenses |  | 923 | 789 |
Operating income (loss) |  | 22 | 39 |
VLP [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | 0 | 0 |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | 0 | 0 |
VLP [Member] | Intersegment Eliminations [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | 106 | 79 |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | 0 | 0 |
VLP [Member] | Operating Segments [Member] |  |  |  |
Segment Information for our Reportable Segments |  |  |  |
Operating revenues |  | 106 | 79 |
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) |  | 0 | 0 |
Lower of cost or market inventory valuation adjustment |  |  | 0 |
Operating expenses |  | 24 | 24 | [2]
General and administrative expenses |  | 0 | 0 |
Depreciation and amortization expense |  | 12 | 12 | [2]
Total costs and expenses |  | 36 | 36 |
Operating income (loss) |  | $ 70 | $ 43 |
[1] | Includes excise taxes on sales by certain of our international operations of $1,272 million and $1,395 million for the three months ended March 31, 2017 and 2016, respectively.
[2] | The VLP segment information for the three months ended March 31, 2016 has been retrospectively adjusted for VLP’s acquisitions that occurred subsequent to March 31, 2016.

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