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Revenues and Segment Information, Components of Operating Income (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 USD ($) refinery ethanol_plant | Jun. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) refinery ethanol_plant segment | Jun. 30, 2017 USD ($)
Segment Information for our Reportable Segments |  |  |  |  |
Revenues | [1] | $ 31,015 | $ 22,254 | $ 57,454 | $ 44,026
Cost of materials and other |  | 27,860 | 19,609 | 51,616 | 39,037
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 1,110 | 1,111 | 2,246 | 2,235
Depreciation and amortization expense |  | 510 | 485 | 995 | 973
Total cost of sales |  | 29,480 | 21,205 | 54,857 | 42,245
Other operating expenses |  | 21 | 0 | 31 | 0
General and administrative expenses (excluding depreciation and amortization expense reflected below) |  | 248 | 175 | 486 | 367
Depreciation and amortization expense |  | 13 | 14 | 26 | 26
Operating income |  | $ 1,253 | 860 | $ 2,054 | 1,388
Disclosure of Entity's Reportable Segments (Textual) |  |  |  |  |
Number of reportable segments | segment |  |  |  | 3 |
Number of petroleum refineries | refinery |  | 15 |  | 15 |
Number of ethanol plants | ethanol_plant |  | 11 |  | 11 |
Corporate, Reconciling Items And Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | $ (177) | (138) | $ (358) | (304)
Operating income |  | (260) | (187) | (510) | (391)
Corporate [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 1 | 0 | 2 | 0
General and administrative expenses (excluding depreciation and amortization expense reflected below) |  | 248 | 175 | 486 | 367
Depreciation and amortization expense |  | 13 | 14 | 26 | 26
Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | (178) | (138) | (360) | (304)
Cost of materials and other |  | (177) | (138) | (358) | (304)
Operating expenses (excluding depreciation and amortization expense reflected below) |  | (1) | (2) | (2) | (2)
Depreciation and amortization expense |  | 0 | 0 | 0 | 0
Total cost of sales |  | (178) | (140) | (360) | (306)
Other operating expenses |  | 0 |  | 0 |
Refining [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 30,130 | 21,415 | 55,691 | 42,302
Refining [Member] | Operating Segments [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 30,131 | 21,415 | 55,696 | 42,302
Cost of materials and other |  | 27,283 | 19,037 | 50,471 | 37,844
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 969 | 979 | 1,966 | 1,970
Depreciation and amortization expense |  | 471 | 454 | 919 | 903
Total cost of sales |  | 28,723 | 20,470 | 53,356 | 40,717
Other operating expenses |  | 21 |  | 31 |
General and administrative expenses (excluding depreciation and amortization expense reflected below) |  | 0 | 0 | 0 | 0
Depreciation and amortization expense |  | 0 | 0 | 0 | 0
Operating income |  | 1,387 | 945 | 2,309 | 1,585
Refining [Member] | Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 1 | 0 | 5 | 0
Ethanol [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 884 | 839 | 1,761 | 1,724
Ethanol [Member] | Operating Segments [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 926 | 867 | 1,849 | 1,812
Cost of materials and other |  | 754 | 710 | 1,503 | 1,497
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 109 | 107 | 220 | 216
Depreciation and amortization expense |  | 20 | 19 | 38 | 46
Total cost of sales |  | 883 | 836 | 1,761 | 1,759
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
Operating income |  | 43 | 31 | 88 | 53
Ethanol [Member] | Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 42 | 28 | 88 | 88
VLP [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 0 | 0 | 0 | 0
VLP [Member] | Operating Segments [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 135 | 110 | 267 | 216
Cost of materials and other |  | 0 | 0 | 0 | 0
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 33 | 27 | 62 | 51
Depreciation and amortization expense |  | 19 | 12 | 38 | 24
Total cost of sales |  | 52 | 39 | 100 | 75
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
Operating income |  | 83 | 71 | 167 | 141
VLP [Member] | Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | $ 135 | $ 110 | $ 267 | $ 216
[1] | Includes excise taxes on sales by certain of our international operations of $1,470 million and $1,384 million for the three months ended June 30, 2018 and 2017, respectively, and $2,934 million and $2,656 million for the six months ended June 30, 2018 and 2017, respectively.

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