Background and Basis of Presentation (Details)	1 Months Ended			3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	May 31, 2013 Enogex LLC [Member] OGE ARCLIGHT [Member]	May 31, 2013 Southeast Supply Header Llc [Member] CERC Corp [Member]	Sep. 30, 2013 Enable Midstream Partners [Member] ArcLight [Member]	Sep. 30, 2013 Enable Midstream Partners [Member] CERC Corp [Member]	Sep. 30, 2013 Enable Midstream Partners [Member] CERC Corp [Member]	Sep. 30, 2013 Enable Midstream Partners [Member] OGE [Member]	Sep. 30, 2013 Enable Midstream Partners [Member] OGE [Member]
Equity Method Investment, Ownership Percentage			13.20%	58.30%	58.30%	28.50%	28.50%
Equity Interest Contributed, Percentage	100.00%	24.95%
Nature of Common Ownership or Management Control Relationships					50.00%		50.00%
Incentive Distribution Right				40.00%		60.00%