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This should not include amounts that were capitalized and subsequently expensed in the same annual period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS19-1 -Paragraph 10 -Subparagraph a falsefalseBalance at January 15false0us-gaap_CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReservesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse491000000491falsefalsefalsefalsefalse2truefalsefalse483000000483falsefalsefalsefalsefalse3truefalsefalse211000000211falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAdditions to capitalized exploratory well costs that were added during the reporting period pending the determination of proved reserves.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS19-1 -Paragraph 10 -Subparagraph a falsefalseAdditions pending the determination of proved reserves6false0us-gaap_ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReservesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-106000000-106falsefalsefalsefalsefalse2truefalsefalse-120000000-120falsefalsefalsefalsefalse3truefalsefalse-175000000-175falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryPreviously capitalized costs of the drilling of wells that were reclassified as part of the costs of the enterprise's wells and related equipment and facilities at the time that proved reserves were found.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS19-1 -Paragraph 10 -Subparagraph a falsefalseReclassifications to proved properties7false0us-gaap_CapitalizedExploratoryWellCostChargedToExpenseus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-29000000-29falsefalsefalsefalsefalse2truefalsefalse-63000000-63falsefalsefalsefalsefalse3truefalsefalse-65000000-65falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCapitalized exploratory well costs that were expensed during the year because proved reserves were not found at the exploratory well.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS19-1 -Paragraph 10 -Subparagraph a falsefalseCharges to exploration expense8false0us-gaap_CapitalizedExploratoryWellCostsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse935000000935falsetruefalsefalsefalse2truefalsefalse579000000579falsetruefalsefalsefalse3truefalsefalse279000000279falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of capitalized exploratory well costs that is pending the determination of proved reserves. 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