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If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. 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Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 false 175 Net Income (Loss) Attributable to ConocoPhillips 2 us-gaap_NetIncomeLossAbstract 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 false false false xbrli:stringItemType string No definition available. false 176 Net Income (loss) Attributable to ConocoPhillips 2 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false -276000000 -276 false false false 2 false true false false -283000000 -283 false false false 3 false true false false -975000000 -975 false false false 4 false true false false -699000000 -699 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. 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No authoritative reference available. false 188 Segment Disclosures and Related Information (Textuals) [Abstract] 2 cop_SegmentDisclosuresAndRelatedInformationTextualsAbstract cop false na duration Segment Disclosures and Related Information. 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 false false false xbrli:stringItemType string Segment Disclosures and Related Information. false 189 Ownership percentage in equity investment 2 us-gaap_EquityMethodInvestmentOwnershipPercentage us-gaap true na instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 0.5 0.5 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 false false false us-types:percentItemType pure The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. 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Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 true 1 Includes excise taxes on petroleum products sales of $3,544 and $3,538 in Three Months Ended September 30, 2010 and 2009 respectively, $10,181 and $9,914 in Nine Months Ended September 30, 2010 and 2009 respectively. 2 Recast to reflect a change in accounting principle. See Note 2-Changes in Accounting Principles, for more information. 3 LUKOIL Investment recast to reflect a change in accounting principle. 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