Condensed Consolidating Financial Information Related To Guaranteed Securities Issued By Subsidiaries (Schedule Of Condensed Consolidated Statement Of Income) (Details) (USD $) In Millions | 3 Months Ended | 9 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | |||||||||
| Sales and other operating revenue, including sales-based taxes | $ 120,475 | [1],[2] | $ 92,353 | [1],[2] | $ 351,120 | [1],[2] | $ 269,083 | [1],[2] | ||||
| Income from equity affiliates | 3,915 | 2,443 | 11,462 | 7,224 | ||||||||
| Other income | 940 | 502 | 2,238 | 1,728 | ||||||||
| Total revenues and other income | 125,330 | 95,298 | 364,820 | 278,035 | ||||||||
| Crude oil and product purchases | 69,289 | 48,875 | 199,233 | 144,129 | ||||||||
| Production and manufacturing expenses | 10,199 | 8,982 | 30,041 | 25,793 | ||||||||
| Selling, general and administrative expenses | 3,764 | 3,707 | 11,072 | 10,828 | ||||||||
| Depreciation and depletion | 3,866 | 3,844 | 11,508 | 10,490 | ||||||||
| Exploration expenses, including dry holes | 728 | 500 | 1,654 | 1,593 | ||||||||
| Interest expense | 98 | 54 | 172 | 149 | ||||||||
| Sales-based taxes | 8,484 | [1] | 7,172 | [1] | 25,013 | [1] | 20,933 | [1] | ||||
| Other taxes and duties | 10,222 | 9,306 | 29,911 | 26,488 | ||||||||
| Total costs and other deductions | 106,650 | 82,440 | 308,604 | 240,403 | ||||||||
| Income before income taxes | 18,680 | 12,858 | 56,216 | 37,632 | ||||||||
| Income taxes | 8,009 | 5,297 | 23,734 | 15,750 | ||||||||
| Net income including noncontrolling interests | 10,671 | 7,561 | 32,482 | 21,882 | ||||||||
| Net income attributable to noncontrolling interests | 341 | 211 | 822 | 672 | ||||||||
| Net income attributable to ExxonMobil | 10,330 | 7,350 | 31,660 | 21,210 | ||||||||
ExxonMobil Corporation Parent Guarantor [Member] | ||||||||||||
| Sales and other operating revenue, including sales-based taxes | 4,600 | 3,835 | 13,658 | 11,622 | ||||||||
| Income from equity affiliates | 10,010 | 6,858 | 30,333 | 20,445 | ||||||||
| Other income | 25 | 106 | 81 | 403 | ||||||||
| Intercompany revenue | 14,052 | 9,244 | 40,753 | 28,330 | ||||||||
| Total revenues and other income | 28,687 | 20,043 | 84,825 | 60,800 | ||||||||
| Crude oil and product purchases | 14,641 | 9,545 | 42,324 | 29,886 | ||||||||
| Production and manufacturing expenses | 2,062 | 1,972 | 5,942 | 5,741 | ||||||||
| Selling, general and administrative expenses | 743 | 693 | 2,180 | 2,159 | ||||||||
| Depreciation and depletion | 378 | 410 | 1,189 | 1,268 | ||||||||
| Exploration expenses, including dry holes | 57 | 35 | 168 | 163 | ||||||||
| Interest expense | 76 | 67 | 217 | 199 | ||||||||
| Other taxes and duties | 10 | 8 | 30 | 23 | ||||||||
| Total costs and other deductions | 17,967 | 12,730 | 52,050 | 39,439 | ||||||||
| Income before income taxes | 10,720 | 7,313 | 32,775 | 21,361 | ||||||||
| Income taxes | 390 | (37) | 1,115 | 151 | ||||||||
| Net income including noncontrolling interests | 10,330 | 7,350 | 31,660 | 21,210 | ||||||||
| Net income attributable to ExxonMobil | 10,330 | 7,350 | 31,660 | 21,210 | ||||||||
SeaRiver Maritime Financial Holdings Inc. [Member] | ||||||||||||
| Income from equity affiliates | (9) | (3) | (22) | (3) | ||||||||
| Intercompany revenue | 1 | 2 | 3 | |||||||||
| Total revenues and other income | (9) | (2) | (20) | |||||||||
| Interest expense | 68 | 62 | 205 | 185 | ||||||||
| Total costs and other deductions | 68 | 62 | 205 | 185 | ||||||||
| Income before income taxes | (77) | (64) | (225) | (185) | ||||||||
| Income taxes | (25) | (23) | (76) | (68) | ||||||||
| Net income including noncontrolling interests | (52) | (41) | (149) | (117) | ||||||||
| Net income attributable to ExxonMobil | (52) | (41) | (149) | (117) | ||||||||
All Other Subsidiaries [Member] | ||||||||||||
| Sales and other operating revenue, including sales-based taxes | 115,875 | 88,518 | 337,462 | 257,461 | ||||||||
| Income from equity affiliates | 3,894 | 2,422 | 11,386 | 7,151 | ||||||||
| Other income | 915 | 396 | 2,157 | 1,325 | ||||||||
| Intercompany revenue | 113,499 | 81,258 | 337,888 | 242,859 | ||||||||
| Total revenues and other income | 234,183 | 172,594 | 688,893 | 508,796 | ||||||||
| Crude oil and product purchases | 179,354 | 127,361 | 527,228 | 377,952 | ||||||||
| Production and manufacturing expenses | 9,601 | 8,229 | 28,335 | 23,882 | ||||||||
| Selling, general and administrative expenses | 3,209 | 3,190 | 9,432 | 9,191 | ||||||||
| Depreciation and depletion | 3,488 | 3,434 | 10,319 | 9,222 | ||||||||
| Exploration expenses, including dry holes | 671 | 465 | 1,486 | 1,430 | ||||||||
| Interest expense | 1,166 | 1,020 | 3,356 | 2,949 | ||||||||
| Sales-based taxes | 8,484 | 7,172 | 25,013 | 20,933 | ||||||||
| Other taxes and duties | 10,212 | 9,298 | 29,881 | 26,465 | ||||||||
| Total costs and other deductions | 216,185 | 160,169 | 635,050 | 472,024 | ||||||||
| Income before income taxes | 17,998 | 12,425 | 53,843 | 36,772 | ||||||||
| Income taxes | 7,644 | 5,357 | 22,695 | 15,667 | ||||||||
| Net income including noncontrolling interests | 10,354 | 7,068 | 31,148 | 21,105 | ||||||||
| Net income attributable to noncontrolling interests | 341 | 211 | 822 | 672 | ||||||||
| Net income attributable to ExxonMobil | 10,013 | 6,857 | 30,326 | 20,433 | ||||||||
Consolidating And Eliminating Adjustments [Member] | ||||||||||||
| Income from equity affiliates | (9,980) | (6,834) | (30,235) | (20,369) | ||||||||
| Intercompany revenue | (127,551) | (90,503) | (378,643) | (271,192) | ||||||||
| Total revenues and other income | (137,531) | (97,337) | (408,878) | (291,561) | ||||||||
| Crude oil and product purchases | (124,706) | (88,031) | (370,319) | (263,709) | ||||||||
| Production and manufacturing expenses | (1,464) | (1,219) | (4,236) | (3,830) | ||||||||
| Selling, general and administrative expenses | (188) | (176) | (540) | (522) | ||||||||
| Interest expense | (1,212) | (1,095) | (3,606) | (3,184) | ||||||||
| Total costs and other deductions | (127,570) | (90,521) | (378,701) | (271,245) | ||||||||
| Income before income taxes | (9,961) | (6,816) | (30,177) | (20,316) | ||||||||
| Net income including noncontrolling interests | (9,961) | (6,816) | (30,177) | (20,316) | ||||||||
| Net income attributable to ExxonMobil | $ (9,961) | $ (6,816) | $ (30,177) | $ (20,316) | ||||||||
| ||||||||||||
| X | ||||||||||
- Definition Total costs of sales and operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The amount of excise and sales taxes included in sales and revenues, which are then deducted as a cost of sales. Includes excise taxes, which are applied to specific types of transactions or items (such as gasoline or alcohol); and sales, use and value added taxes, which are applied to a broad class of revenue-producing transactions involving a wide range of goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The portion of net Income or Loss attributable to the noncontrolling interest (if any) deducted in order to derive the portion attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Taxes, excluding payroll, income and excise taxes, if not included elsewhere, that could include production, real and personal property, and other selling and distribution-related taxes.
|
| X | ||||||||||
- Definition Purchase cost of crude oil, products and other raw materials, feedstocks, semi finished products, finished products and other merchandise that become part of salable products for oil and gas, refining and marketing and chemical operations.
|
| X | ||||||||||
- Definition Sales and other operating revenue from consolidated subsidiaries.
|
| X | ||||||||||
- Definition Costs, excluding deprecation, incurred to operate and maintain - 1) oil and gas wells, production, transportation and support equipment and facilities; 2) refining manufacturing facilities; and 3) chemical manufacturing facilities.
|
| X | ||||||||||
- Definition Total revenue from sale of goods and services during the reporting period, reduced by sales returns and allowances, and sales discounts. Also includes sales-based taxes (e.g. excise and sales taxes) which are then deducted as sales-based tax expense.
|
| X | ||||||||||
- Definition Total revenues and income from equity affiliates and other income.
|