Investment in Unconsolidated Affiliates Reconciliation of Equity in Earnings of Unconsolidated Affiliates (Tables)

5 Months Ended

Sep. 30, 2013

Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Line Items]

Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Table Text Block]

	Three Months Ended		Five Months Ended
Reconciliation of Equity in Earnings of Unconsolidated Affiliates	September 30, 2013		September 30, 2013
	(In millions)
OGE's 28.5% share of Enable Net Income	$	35.1	$	53.6
Amortization of basis difference	5.9		5.9
Elimination of Enogex Holdings fair value adjustments	5.0		5.0
OGE's Equity in earnings of unconsolidated affiliates	$	46.0	$	64.5