Income And Other Taxes (Reconciliation Between Income Tax Expense And Theoretical U.S. Tax) (Details) - USD ($) $ in Millions |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Income And Other Taxes [Abstract] | |||||||||
| United States income before income taxes | $ (53) | $ 5,200 | $ (754) | ||||||
| Non-U.S. income before income taxes | 20,109 | 25,753 | 19,428 | ||||||
| Income before income taxes | 20,056 | 30,953 | 18,674 | ||||||
| Theoretical tax | 4,212 | 6,500 | 6,536 | ||||||
| Effect of equity method of accounting | (1,143) | (1,545) | (1,883) | ||||||
| Non-U.S. taxes in excess of/(less than) theoretical U.S. tax | 2,573 | [1] | 4,626 | 1,848 | |||||
| Other | (360) | 242 | (1,733) | [2] | |||||
| Total income tax expense | 5,282 | 9,532 | (1,174) | ||||||
| ExxonMobil share of equity company income taxes | 2,490 | 3,142 | 2,228 | ||||||
| Total income taxes | 7,772 | 12,674 | 1,054 | ||||||
| Net income including noncontrolling interests | 14,774 | 21,421 | 19,848 | ||||||
| Total income before taxes | $ 22,546 | $ 34,095 | $ 20,902 | ||||||
| Effective income tax rate | 34.00% | 37.00% | 5.00% | ||||||
| Exploration tax charge/(benefit) | $ (708) | ||||||||
| Effect of U.S. tax reform | |||||||||
| Effective Tax Rate [Line Items] | |||||||||
| Effect of U.S. tax reform | $ (291) | (5,942) | |||||||
| U.S. [Member] | |||||||||
| Income And Other Taxes [Abstract] | |||||||||
| Total income tax expense | $ (469) | 1,145 | (8,561) | ||||||
| Non-U.S. [Member] | |||||||||
| Income And Other Taxes [Abstract] | |||||||||
| Total income tax expense | 5,751 | $ 8,387 | $ 7,387 | ||||||
| Non-U.S. [Member] | Benefit [Member] | |||||||||
| Effective Tax Rate [Line Items] | |||||||||
| Adjustment to prior year tax position charge/(benefit) | (268) | ||||||||
| Norway operations and the sale of upstream assets | (773) | ||||||||
| Tax rate change in Alberta, Canada | $ (657) | ||||||||
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deductions. Including, but not limited to, extraterritorial income exclusion deduction, qualified production activity deduction, dividend deduction, deduction for dividend paid to employee stock ownership plan, Medicare prescription drug benefit subsidy deduction, and other deductions. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to disposition of asset. Includes, but is not limited to, intra-entity transfer of asset other than inventory. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to equity in earnings (loss) of unconsolidated subsidiaries exempt from income taxes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense (benefit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- 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/disclosureRef
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- Definition Effective Tax Rate [Line Items] No definition available.
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- References No definition available.
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- Definition Results Of Operations Income Before Consolidate and Equity Company Income Taxes No definition available.
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- Definition Share of Equity Company Income Taxes No definition available.
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- Definition Total Consolidated Company and Share of Equity Company Income Taxes No definition available.
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