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Segment Information, Activity (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) segment | Sep. 30, 2016 USD ($)
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues | [1] | $ 23,562 | $ 19,649 | $ 67,588 | $ 54,947
Cost of materials and other |  | 20,329 | 17,033 | 59,366 | 47,660
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 1,125 | 1,062 | 3,339 | 3,093
Depreciation and amortization expense |  | 484 | 458 | 1,457 | 1,391
Lower of cost or market inventory valuation adjustment |  | 0 | 0 | 0 | (747)
Total cost of sales |  | 21,938 | 18,553 | 64,162 | 51,397
Other operating expenses |  | 44 | 0 | 44 | 0
General and administrative expenses (excluding depreciation and amortization expense reflected below) |  | 229 | 192 | 597 | 507
Depreciation and amortization expense |  | 13 | 12 | 39 | 35
Asset impairment loss |  | 0 | 0 | 0 | 56
Operating income |  | 1,338 | 892 | $ 2,746 | 2,952
Disclosure of Entity's Reportable Segments (Textual) |  |  |  |  |
Number of reportable segments | segment |  |  |  | 3 |
Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | (159) | (148) | $ (463) | (393)
Corporate, Non-Segment [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | (159) | (148) | (463) | (393)
Cost of materials and other |  | (158) | (148) | (462) | (393)
Operating expenses (excluding depreciation and amortization expense reflected below) |  | (1) | 0 | (1) | 0
Depreciation and amortization expense |  | 0 | 0 | 0 | 0
Total cost of sales |  | (159) | (148) | (463) | (393)
Other operating expenses |  | 0 |  | 0 |
General and administrative expenses (excluding depreciation and amortization expense reflected below) |  | 229 | 192 | 597 | 507
Depreciation and amortization expense |  | 13 | 12 | 39 | 35
Asset impairment loss |  |  |  |  | 0
Operating income |  | (242) | (204) | (636) | (542)
Refining [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | 22,728 | 18,718 | 65,030 | 52,302
Refining [Member] | Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | 1 | 0 | 1 | 0
Refining [Member] | Operating Segments [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | 22,729 | 18,718 | 65,031 | 52,302
Cost of materials and other |  | 19,818 | 16,424 | 57,662 | 45,790
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 986 | 931 | 2,935 | 2,716
Depreciation and amortization expense |  | 455 | 429 | 1,358 | 1,308
Lower of cost or market inventory valuation adjustment |  |  |  |  | (697)
Total cost of sales |  | 21,259 | 17,784 | 61,955 | 49,117
Other operating expenses |  | 41 |  | 41 |
General and administrative expenses (excluding depreciation and amortization expense reflected below) |  | 0 | 0 | 0 | 0
Depreciation and amortization expense |  | 0 | 0 | 0 | 0
Asset impairment loss |  |  |  |  | 56
Operating income |  | 1,429 | 934 | 3,035 | 3,129
Ethanol [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | 834 | 931 | 2,558 | 2,645
Ethanol [Member] | Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | 48 | 56 | 136 | 135
Ethanol [Member] | Operating Segments [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | 882 | 987 | 2,694 | 2,780
Cost of materials and other |  | 669 | 757 | 2,166 | 2,263
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 114 | 107 | 330 | 305
Depreciation and amortization expense |  | 17 | 17 | 63 | 48
Lower of cost or market inventory valuation adjustment |  |  |  |  | (50)
Total cost of sales |  | 800 | 881 | 2,559 | 2,566
Other operating expenses |  | 0 |  | 0 |
General and administrative expenses (excluding depreciation and amortization expense reflected below) |  | 0 | 0 | 0 | 0
Depreciation and amortization expense |  | 0 | 0 | 0 | 0
Asset impairment loss |  |  |  |  | 0
Operating income |  | 82 | 106 | 135 | 214
VLP [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | 0 | 0 | 0 | 0
VLP [Member] | Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | 110 | 92 | 326 | 258
VLP [Member] | Operating Segments [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Operating revenues |  | 110 | 92 | 326 | 258
Cost of materials and other |  | 0 | 0 | 0 | 0
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 26 | 24 | 75 | 72
Depreciation and amortization expense |  | 12 | 12 | 36 | 35
Lower of cost or market inventory valuation adjustment |  |  |  |  | 0
Total cost of sales |  | 38 | 36 | 111 | 107
Other operating expenses |  | 3 |  | 3 |
General and administrative expenses (excluding depreciation and amortization expense reflected below) |  | 0 | 0 | 0 | 0
Depreciation and amortization expense |  | 0 | 0 | 0 | 0
Asset impairment loss |  |  |  |  | 0
Operating income |  | $ 69 | $ 56 | $ 212 | $ 151
[1] | Includes excise taxes on sales by certain of our international operations of $1,447 million and $1,398 million for the three months ended September 30, 2017 and 2016, respectively, and $4,103 million and $4,263 million for the nine months ended September 30, 2017 and 2016, respectively.

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