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Acquisitions And Divestitures (Schedule Of Unaudited Proforma Information) (Details) (EnLink And GeoSouthern Intermediate Holdings, LLC [Member], USD $) In Millions, except Per Share data, unless otherwise specified | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013
EnLink And GeoSouthern Intermediate Holdings, LLC [Member] |  |
Business Acquisition [Line Items] |  |
Total operating revenues | $ 14,218 | $ 9,603
Net earnings (loss) | 2,109 | (192)
Noncontrolling interests | 68 | 32
Net earnings (loss) attributable to Devon | $ 2,041 | $ (224)
Net earnings (loss) per common share attributable to Devon | $ 4.98 | $ (0.55)

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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