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0 true false false 60 false true false false 10000000 10 true false false 61 false true false false 18000000 18 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:monetaryItemType monetary Fair value as of the balance sheet date of all derivative assets designated as interest rate fair value hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 17 false 10 Commodity derivative and financial instruments 3 cop_CommodityDerivativeAndFinancialInstrumentsAbstract cop false na duration Commodity derivative and financial instruments Abstract. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:stringItemType string Commodity derivative and financial instruments Abstract. false 11 Financial Assets 4 cop_FinancialAssets cop false debit instant Assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects... false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 45000000 45 true false false 6 false true false false 45000000 45 true false false 7 false true false false 707000000 707 true false false 8 false true false false 823000000 823 true false false 9 false true false false 28000000 28 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false true false false 2856000000 2856 [1] true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false true false false 45000000 45 true false false 23 false true false false 45000000 45 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false true false false 707000000 707 true false false 33 false true false false 823000000 823 true false false 34 false true false false 28000000 28 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false true false false 2856000000 2856 [1] true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:monetaryItemType monetary Assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements, and net of obligations ot return cash collateral. No authoritative reference available. false 12 Financial Liabilities 4 cop_FinancialLiabilities cop false credit instant Liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the... false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 12000000 12 true false false 6 false true false false 47000000 47 true false false 7 false true false false 471000000 471 true false false 8 false true false false 632000000 632 true false false 9 false false false false 0 0 true false false 10 false true false false 23561000000 23561 true false false 11 false true false false 28622000000 28622 true false false 12 false true false false 5178000000 5178 true false false 13 false true false false 5669000000 5669 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false true false false 12000000 12 true false false 23 false true false false 47000000 47 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false true false false 471000000 471 true false false 33 false true false false 632000000 632 true false false 34 false false false false 0 0 true false false 35 false true false false 23382000000 23382 true false false 36 false true false false 30565000000 30565 true false false 37 false true false false 5852000000 5852 true false false 38 false true false false 6276000000 6276 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:monetaryItemType monetary Liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements, and net of rights to reclaim cash collateral. No authoritative reference available. false 15 Gains (losses) from derivatives 3 us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeNetAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 16 Gains (losses) from derivatives 4 us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeNet us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false -270000000 -270 true false false 40 false true false false -599000000 -599 true false false 41 false true false false 596000000 596 true false false 42 false true false false -1554000000 -1554 true false false 43 false true false false 18000000 18 true false false 44 false true false false 40000000 40 true false false 45 false true false false 121000000 121 true false false 46 false true false false -133000000 -133 true false false 47 false true false false 3000000 3 true false false 48 false true false false -4000000 -4 true false false 49 false true false false -26000000 -26 true false false 50 false true false false 21000000 21 true false false 51 false true false false 227000000 227 true false false 52 false true false false 727000000 727 true false false 53 false true false false -430000000 -430 true false false 54 false true false false 1118000000 1118 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:monetaryItemType monetary The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b true 18 Recorded in interest and debt expense 4 us-gaap_EffectOfFairValueHedgesOnResultsOfOperationsAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 19 From the interest rate derivatives 5 us-gaap_ChangeInUnrealizedGainLossOnFairValueHedgingInstruments us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false true false false -14000000 -14 true false false 56 false true false false -30000000 -30 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:monetaryItemType monetary Amount of the increase or decrease in fair value during the period of derivative or nonderivative instruments designated as fair value hedging instruments. Recognized in earnings and offsets the gain (loss) on the hedged item to the extent that the fair value hedge is determined to be effective. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph a(1) false 20 From the hedged debt 5 us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false true false false 12000000 12 true false false 58 false true false false 26000000 26 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:monetaryItemType monetary Amount of the increase or decrease in fair value during the period of the hedged item in a fair value hedge. Recognized in earnings and is offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph a(1) false 21 Gains (losses) from foreign exchange derivatives 3 cop_GainsLossesFromForeignExchangeDerivativesAbstract cop false na duration Gains losses from foreign exchange derivatives abstract. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:stringItemType string Gains losses from foreign exchange derivatives abstract. false 22 Foreign exchange transaction (gains) losses 4 us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeNet us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false true false false -270000000 -270 true false false 40 false true false false -599000000 -599 true false false 41 false true false false 596000000 596 true false false 42 false true false false -1554000000 -1554 true false false 43 false true false false 18000000 18 true false false 44 false true false false 40000000 40 true false false 45 false true false false 121000000 121 true false false 46 false true false false -133000000 -133 true false false 47 false true false false 3000000 3 true false false 48 false true false false -4000000 -4 true false false 49 false true false false -26000000 -26 true false false 50 false true false false 21000000 21 true false false 51 false true false false 227000000 227 true false false 52 false true false false 727000000 727 true false false 53 false true false false -430000000 -430 true false false 54 false true false false 1118000000 1118 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:monetaryItemType monetary The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b false 25 Net exposures from outstanding commodity derivative contracts 3 cop_NetExposuresFromOutstandingCommodityDerivativeContractsAbstract cop false na duration Net exposures from outstanding commodity derivative contracts Abstract. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:stringItemType string Net exposures from outstanding commodity derivative contracts Abstract. false 26 Open Position Long (Short) 4 invest_DerivativeNonmonetaryNotionalAmount invest false na instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false true false false -43000000 -43000000 true false false 63 false true false false -16000000 -16000000 true false false 64 false true false false -76000000 -76000000 true false false 65 false true false false -60000000 -60000000 true false false 66 false true false false -110000000 -110000000 true false false 67 false true false false 154000000 154000000 true false false xbrli:decimalItemType decimal Aggregate notional amount of derivative expressed in nonmonetary units. For example the number of barrels specified in a fuel oil forward purchase contract. No authoritative reference available. false 27 Net position of outstanding foreign currency swap contracts 1 cop_NetPositionOfOutstandingForeignCurrencySwapContractsAbstract cop false na duration Net position of outstanding foreign currency swap contracts. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:stringItemType string Net position of outstanding foreign currency swap contracts. false 28 Sell U.S. Dollar, buy other currencies 2 us-gaap_NotionalAmountOfForeignCurrencyDerivativeSaleContracts us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 1061000000 1061 [2],[3] false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false true false false 3211000000 3211 [2],[3] false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:monetaryItemType monetary Aggregate notional amount of foreign currency derivatives to sell a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract. No authoritative reference available. false 29 Buy British pound, sell euro 2 us-gaap_NotionalAmountOfForeignCurrencyDerivativePurchaseContracts us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 true true false false 248000000 248 [2] false false false 3 true true false false 267000000 267 [2] false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false 11 false false false false 0 0 true false false 12 false false false false 0 0 true false false 13 false false false false 0 0 true false false 14 false false false false 0 0 true false false 15 false false false false 0 0 true false false 16 false false false false 0 0 true false false 17 false false false false 0 0 true false false 18 false false false false 0 0 true false false 19 false false false false 0 0 true false false 20 false false false false 0 0 true false false 21 false false false false 0 0 true false false 22 false false false false 0 0 true false false 23 false false false false 0 0 true false false 24 false false false false 0 0 true false false 25 false false false false 0 0 true false false 26 false false false false 0 0 true false false 27 false false false false 0 0 true false false 28 false false false false 0 0 true false false 29 false false false false 0 0 true false false 30 false false false false 0 0 true false false 31 false false false false 0 0 true false false 32 false false false false 0 0 true false false 33 false false false false 0 0 true false false 34 false false false false 0 0 true false false 35 false false false false 0 0 true false false 36 false false false false 0 0 true false false 37 false false false false 0 0 true false false 38 false false false false 0 0 true false false 39 false false false false 0 0 true false false 40 false false false false 0 0 true false false 41 false false false false 0 0 true false false 42 false false false false 0 0 true false false 43 false false false false 0 0 true false false 44 false false false false 0 0 true false false 45 false false false false 0 0 true false false 46 false false false false 0 0 true false false 47 false false false false 0 0 true false false 48 false false false false 0 0 true false false 49 false false false false 0 0 true false false 50 false false false false 0 0 true false false 51 false false false false 0 0 true false false 52 false false false false 0 0 true false false 53 false false false false 0 0 true false false 54 false false false false 0 0 true false false 55 false false false false 0 0 true false false 56 false false false false 0 0 true false false 57 false false false false 0 0 true false false 58 false false false false 0 0 true false false 59 false false false false 0 0 true false false 60 false false false false 0 0 true false false 61 false false false false 0 0 true false false 62 false false false false 0 0 true false false 63 false false false false 0 0 true false false 64 false false false false 0 0 true false false 65 false false false false 0 0 true false false 66 false false false false 0 0 true false false 67 false false false false 0 0 true false false xbrli:monetaryItemType monetary Aggregate notional amount of foreign currency derivatives to purchase a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract. No authoritative reference available. false 1 *Prior to September 30, 2010, our investment in LUKOIL was accounted for using the equity method. See Note 6-Investment, Loans and Long-term Receivables, for more information. 2 Denominated in U.S. dollars (USD) and euros (EUR). 3 Primarily euro, Canadian dollar, Norwegian krone and British pound. 67 20 false Millions UnKnown UnKnown true true