1.0.0.3trueStatement Of Shareholders Equity And Other Comprehensive Income (USD $)In Millionsfalse1$truefalsefalsefalseCommon Stockus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommonStockMemberus-gaap_StatementEquityComponentsAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170false2$truefalsefalsefalseEarnings Reinvestedus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RetainedEarningsMemberus-gaap_StatementEquityComponentsAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170false3$truefalsefalsefalseAccumulated Other Comprehensive Incomeus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AccumulatedOtherComprehensiveIncomeMemberus-gaap_StatementEquityComponentsAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170false4$truefalsefalsefalseCommon Stock Held in Treasuryus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_TreasuryStockMemberus-gaap_StatementEquityComponentsAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170sharesStandardhttp://www.xbrl.org/2003/instanceshares0false5$truefalsefalsefalseExxonMobil Share of Equityus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ParentMemberus-gaap_StatementEquityComponentsAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170false6$truefalsefalsefalseNoncontrolling 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available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsetrue138000000138truefalse4falsefalse00truefalse5falsetrue138000000138truefalse6falsetrue1700000017truefalse7falsetrue155000000155falsefalseNo definition available.No authoritative reference available.false143us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsetrue-5853000000-5853truefalse4falsefalse00truefalse5falsetrue-5853000000-5853truefalse6falsetrue-224000000-224truefalse7falsetrue-6077000000-6077falsefalseNo definition available.No authoritative reference available.false153xom_OtherComprehensiveIncomeRecognizedInNetPeriodicPensionCostNetOfTaxxomfalsecreditdurationmonetaryThe adjustment out of other comprehensive income for prior service costs, actuarial gains and losses and other 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available.false173us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissuedus-gaaptruecreditdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsefalse00truefalse4falsetrue13140000001314truefalse5falsetrue13140000001314truefalse6falsetrue220000000220truefalse7falsetrue15340000001534falsefalseNo definition available.No authoritative reference available.false203us-gaap_TreasuryStockSharesAcquiredus-gaaptruenadurationsharesNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsefalse00truefalse4falsetrue-434000000-434truefalse5falsefalse00truefalse6falsefalse00truefalse7falsetrue-434000000-434falsefalseNo definition available.No authoritative reference available.false213us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissuedus-gaaptruenadurationsharesNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsefalse00truefalse4falsetrue2800000028truefalse5falsefalse00truefalse6falsefalse00truefalse7falsetrue2800000028falsefalseNo definition available.No authoritative reference available.false183us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestus-gaaptruecreditinstantmonetaryNo definition available.falsefalsefalsetruefalsefalsefalsetruefalse1falsetrue53140000005314truefalse2falsetrue265680000000265680truefalse3falsetrue-9931000000-9931truefalse4falsetrue-148098000000-148098truefalse5falsetrue112965000000112965truefalse6falsetrue45580000004558truefalse7falsetrue117523000000117523falsefalseNo definition available.No authoritative reference available.false223us-gaap_SharesIssuedus-gaaptruenainstantsharesNo definition available.falsefalsefalsetruefalsefalsefalsetruefalse1falsetrue80190000008019truefalse2falsefalse00truefalse3falsefalse00truefalse4falsetrue-3043000000-3043truefalse5falsefalse00truefalse6falsefalse00truefalse7falsetrue49760000004976falsefalseNo definition available.No authoritative reference available.false63xom_AmortizationOfRestrictedStockxomfalsecreditdurationmonetaryAmortization of restricted stock.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue685000000685truefalse2falsefalse00truefalse3falsefalse00truefalse4falsefalse00truefalse5falsetrue685000000685truefalse6falsefalse00truefalse7falsetrue685000000685falsefalseAmortization of restricted stock.No authoritative reference available.false73us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensationus-gaaptruecreditdurationmonetaryNo definition 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available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsetrue1928000000019280truefalse3falsefalse00truefalse4falsefalse00truefalse5falsetrue1928000000019280truefalse6falsetrue378000000378truefalse7falsetrue1965800000019658falsefalseNo definition available.No authoritative reference available.false113us-gaap_DividendsCommonStockus-gaaptruedebitdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsetrue-8023000000-8023truefalse3falsefalse00truefalse4falsefalse00truefalse5falsetrue-8023000000-8023truefalse6falsetrue-280000000-280truefalse7falsetrue-8303000000-8303falsefalseNo definition available.No authoritative reference available.false123us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsetrue32560000003256truefalse4falsefalse00truefalse5falsetrue32560000003256truefalse6falsetrue373000000373truefalse7falsetrue36290000003629falsefalseNo definition available.No authoritative reference available.false143us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsetrue-196000000-196truefalse4falsefalse00truefalse5falsetrue-196000000-196truefalse6falsetrue-144000000-144truefalse7falsetrue-340000000-340falsefalseNo definition available.No authoritative reference available.false153xom_OtherComprehensiveIncomeRecognizedInNetPeriodicPensionCostNetOfTaxxomfalsecreditdurationmonetaryThe adjustment out of other comprehensive income for prior service costs, actuarial gains and losses and other previously...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsetrue14100000001410truefalse4falsefalse00truefalse5falsetrue14100000001410truefalse6falsetrue5100000051truefalse7falsetrue14610000001461falsefalseThe adjustment out of other comprehensive income for prior service costs, actuarial gains and losses and other previously recorded other comprehensive income recognized as a component of net period benefit cost during the period, after tax.No authoritative reference available.false163us-gaap_TreasuryStockValueAcquiredCostMethodus-gaaptruedebitdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsefalse00truefalse4falsetrue-19703000000-19703truefalse5falsetrue-19703000000-19703truefalse6falsetrue-127000000-127truefalse7falsetrue-19830000000-19830falsefalseNo definition available.No authoritative reference available.false173us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissuedus-gaaptruecreditdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsefalse00truefalse4falsetrue13910000001391truefalse5falsetrue13910000001391truefalse6falsetrue1400000014truefalse7falsetrue14050000001405falsefalseNo definition available.No authoritative reference available.false203us-gaap_TreasuryStockSharesAcquiredus-gaaptruenadurationsharesNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsefalse00truefalse4falsetrue-277000000-277truefalse5falsefalse00truefalse6falsefalse00truefalse7falsetrue-277000000-277falsefalseNo definition available.No authoritative reference available.false213us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissuedus-gaaptruenadurationsharesNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00truefalse2falsefalse00truefalse3falsefalse00truefalse4falsetrue2800000028truefalse5falsefalse00truefalse6falsefalse00truefalse7falsetrue2800000028falsefalseNo definition available.No authoritative reference available.false183us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestus-gaaptruecreditinstantmonetaryNo definition available.falsefalsefalsetruefalsefalsefalsetruefalse1truetrue55030000005503truefalse2truetrue276937000000276937truefalse3truetrue-5461000000-5461truefalse4truetrue-166410000000-166410truefalse5truetrue110569000000110569truefalse6truetrue48230000004823truefalse7truetrue115392000000115392falsefalseNo definition available.No authoritative reference available.false223us-gaap_SharesIssuedus-gaaptruenainstantsharesNo definition available.falsefalsefalsetruefalsefalsefalsetruefalse1falsetrue80190000008019truefalse2falsefalse00truefalse3falsefalse00truefalse4falsetrue-3292000000-3292truefalse5falsefalse00truefalse6falsefalse00truefalse7falsetrue47270000004727falsefalseNo definition available.No authoritative reference available.falsefalse746falseMillionsMillionsUnKnownfalsetrue