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Goodwill And Other Intangible Assets (Schedule Of Goodwill By Reporting Units) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2012
Goodwill [Line Items] |  |
Goodwill, Beginning Balance | $ 5,858 us-gaap_Goodwill | $ 6,079 us-gaap_Goodwill
Acquired during period | 3,283 us-gaap_GoodwillAcquiredDuringPeriod |
Goodwill, Ending Balance | 6,303 us-gaap_Goodwill | 6,079 us-gaap_Goodwill
General Partner And Enlink [Member] |  |
Goodwill [Line Items] |  |
Goodwill, Beginning Balance | 402 us-gaap_Goodwill / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember |
Acquired during period | 3,283 us-gaap_GoodwillAcquiredDuringPeriod / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember |
Goodwill, Ending Balance | 3,685 us-gaap_Goodwill / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember |
General Partner And Enlink [Member] | Texas [Member] |  |
Goodwill [Line Items] |  |
Goodwill, Beginning Balance | 326 us-gaap_Goodwill / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementGeographicalAxis = dvn_TexasMember |
Acquired during period | 842 us-gaap_GoodwillAcquiredDuringPeriod / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementGeographicalAxis = dvn_TexasMember |
Goodwill, Ending Balance | 1,168 us-gaap_Goodwill / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementGeographicalAxis = dvn_TexasMember |
General Partner And Enlink [Member] | Louisiana [Member] |  |
Goodwill [Line Items] |  |
Acquired during period | 787 us-gaap_GoodwillAcquiredDuringPeriod / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementGeographicalAxis = dvn_LouisianaMember |
Goodwill, Ending Balance | 787 us-gaap_Goodwill / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementGeographicalAxis = dvn_LouisianaMember |
General Partner And Enlink [Member] | Oklahoma [Member] |  |
Goodwill [Line Items] |  |
Goodwill, Beginning Balance | 76 us-gaap_Goodwill / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementGeographicalAxis = dvn_OklahomaMember |
Acquired during period | 114 us-gaap_GoodwillAcquiredDuringPeriod / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementGeographicalAxis = dvn_OklahomaMember |
Goodwill, Ending Balance | 190 us-gaap_Goodwill / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementGeographicalAxis = dvn_OklahomaMember |
General Partner And Enlink [Member] | Ohio River Valley [Member] |  |
Goodwill [Line Items] |  |
Acquired during period | 113 us-gaap_GoodwillAcquiredDuringPeriod / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementGeographicalAxis = dvn_OhioRiverValleyMember |
Goodwill, Ending Balance | 113 us-gaap_Goodwill / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementGeographicalAxis = dvn_OhioRiverValleyMember |
General Partner And Enlink [Member] | General Partner [Member] |  |
Goodwill [Line Items] |  |
Acquired during period | 1,427 us-gaap_GoodwillAcquiredDuringPeriod / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_GeneralPartnerMember |
Goodwill, Ending Balance | $ 1,427 us-gaap_Goodwill / dei_LegalEntityAxis = dvn_GeneralPartnerAndEnlinkMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_GeneralPartnerMember |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Details
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