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Revenues and Segment Information, Components of Operating Income (Loss) (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 USD ($) refinery ethanol_plant | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) refinery ethanol_plant segment | Sep. 30, 2018 USD ($)
Segment Information for our Reportable Segments |  |  |  |  |
Revenues | [1] | $ 27,249 | $ 30,849 | $ 80,445 | $ 88,303
Cost of materials and other |  | 24,335 | 27,701 | 72,396 | 79,317
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 1,239 | 1,193 | 3,629 | 3,439
Depreciation and amortization expense |  | 556 | 504 | 1,645 | 1,499
Total cost of sales |  | 26,130 | 29,398 | 77,670 | 84,255
Other operating expenses |  | 10 | 10 | 14 | 41
General and administrative expenses (excluding depreciation and amortization expense reflected below) |  | 217 | 209 | 625 | 695
Depreciation and amortization expense |  | 11 | 13 | 39 | 39
Operating income (loss) |  | $ 881 | 1,219 | $ 2,097 | 3,273
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 |  | 14 |  | 14 |
Corporate, Reconciling Items And Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | $ (108) | (87) | $ (346) | (276)
Operating income (loss) |  | (228) | (221) | (664) | (731)
Corporate [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 1 | 1 | 2 | 3
General and administrative expenses (excluding depreciation and amortization expense reflected below) |  | 217 | 209 | 625 | 695
Depreciation and amortization expense |  | 11 | 13 | 39 | 39
Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | (109) | (88) | (348) | (279)
Cost of materials and other |  | (108) | (88) | (346) | (279)
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 0 | 0 | 0 | 0
Depreciation and amortization expense |  | 0 | 0 | 0 | 0
Total cost of sales |  | (108) | (88) | (346) | (279)
Other operating expenses |  | 0 | 0 | 0 | 0
Refining [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 26,145 | 29,894 | 77,109 | 85,371
Refining [Member] | Operating Segments [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 26,147 | 29,899 | 77,121 | 85,391
Cost of materials and other |  | 23,432 | 26,928 | 69,769 | 77,195
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 1,100 | 1,058 | 3,197 | 3,057
Depreciation and amortization expense |  | 518 | 479 | 1,539 | 1,423
Total cost of sales |  | 25,050 | 28,465 | 74,505 | 81,675
Other operating expenses |  | 10 | 10 | 13 | 41
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 (loss) |  | 1,087 | 1,424 | 2,603 | 3,675
Refining [Member] | Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 2 | 5 | 12 | 20
Ethanol [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 891 | 864 | 2,648 | 2,625
Ethanol [Member] | Operating Segments [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 948 | 932 | 2,810 | 2,781
Cost of materials and other |  | 847 | 776 | 2,396 | 2,279
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 121 | 116 | 378 | 336
Depreciation and amortization expense |  | 23 | 19 | 68 | 57
Total cost of sales |  | 991 | 911 | 2,842 | 2,672
Other operating expenses |  | 0 | 0 | 1 | 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 (loss) |  | (43) | 21 | (33) | 109
Ethanol [Member] | Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 57 | 68 | 162 | 156
Renewable Diesel [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 212 | 90 | 686 | 304
Renewable Diesel [Member] | Operating Segments [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | 262 | 105 | 860 | 407
Cost of materials and other |  | 164 | 85 | 577 | 122
Operating expenses (excluding depreciation and amortization expense reflected below) |  | 18 | 19 | 54 | 46
Depreciation and amortization expense |  | 15 | 6 | 38 | 19
Total cost of sales |  | 197 | 110 | 669 | 187
Other operating expenses |  | 0 | 0 | 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 (loss) |  | 65 | (5) | 191 | 220
Renewable Diesel [Member] | Intersegment Eliminations [Member] |  |  |  |  |
Segment Information for our Reportable Segments |  |  |  |  |
Revenues |  | $ 50 | $ 15 | $ 174 | $ 103
[1] | Includes excise taxes on sales by certain of our international operations of $1,399 million and $1,338 million for the three months ended September 30, 2019 and 2018, respectively, and $4,139 million and $4,272 million for the nine months ended September 30, 2019 and 2018, respectively.

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