Commitments and Contingencies (Details) (USD $)			3 Months Ended	7 Months Ended	10 Months Ended	9 Months Ended			3 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Mar. 31, 2014 OG&E minimum fuel purchase commitments [Member]	Oct. 31, 2013 OG&E minimum fuel purchase commitments [Member]	Oct. 31, 2013 OG&E minimum fuel purchase commitments [Member]	Sep. 30, 2013 OG&E long-term service agreement commitments [Member] McClain Plant [Member]	Sep. 30, 2013 OG&E long-term service agreement commitments [Member] Redbud Plant [Member]	Sep. 30, 2013 Enogex [Member]	Sep. 30, 2013 OG&E Wind Energy Purchase Power Lawsuit [Member]
Long-term Purchase Commitment [Line Items]
Percentage of OG&E's Projected 2013 Requirements				84.00%	26.10%
Percentage of OG&E's Projected 2014 Requirements			25.50%
Factored-Fired Hours						128,000	24,000
Factored-Fired Starts						3,600
Operating Leases, Future Minimum Payments Due	$ 0
Commitments and Contingencies								0
Loss Contingency, Damages Sought, Value									100,000
Loss Contingency, Range of Possible Loss, Minimum									0
Loss Contingency, Range of Possible Loss, Maximum									10,000,000
Estimated Environmental Capital Costs	1,000,000,000
Potential Penalty Under the Federal Clean Air Act	$ 37,500