Goodwill And Other Intangible Assets (Summary Of Goodwill) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 3,337
Acquired during period	2
Asset divestitures	(83)
Impairment	(873)
Goodwill, Ending Balance	2,383	[1]
United States [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	923
Asset divestitures	(83)
Goodwill, Ending Balance	840
General Partner And EnLink [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	2,414
Acquired during period	2
Impairment	(873)
Goodwill, Ending Balance	$ 1,543

[1] Prior year amounts have been recast due to change in accounting principle. See Note 2 in “Item 8. Financial Statements and Supplementary Data” of this report.