Acquisitions And Divestitures (Schedule Of Unaudited Pro Forma Information For General Partner and EnLink And GeoSouthern) (Details) - General Partner and EnLink and GeoSouthern [Member] $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2014 USD ($) $ / shares
Business Acquisition [Line Items]
Total operating revenues	$ 20,213
Net earnings	1,716
Noncontrolling interests	97
Net earnings attributable to Devon	$ 1,619
Net earnings per common share attributable to Devon | $ / shares	$ 3.94