Related Party Transactions

9 Months Ended

Sep. 30, 2015

Related Party Transaction [Line Items]

Related Party Transactions Disclosure [Text Block]

Related Party Transactions

OGE Energy charged operating costs to OG&E of $29.6 million and $27.2 million during the three months endedSeptember 30, 2015 and 2014, respectively, and $91.3 million and $89.1 million for the nine months endedSeptember 30, 2015 and 2014, respectively. OGE Energy charges operating costs to OG&E and Enable based on several factors. Operating costs directly related to OG&E and/or Enable are assigned as such.  Operating costs incurred for the benefit of OG&E and Enable are allocated either as overhead based primarily on labor costs or using the "Distrigas" method.

OG&E entered into a new contract with Enable to provide transportation services effective May 1, 2014 which eliminated the natural gas storage services. This transportation agreement grants Enable the responsibility of delivering natural gas to OG&E’s generating facilities and performing an imbalance service. With this imbalance service, in accordance with the cash-out provision of the contract, OG&E purchases gas from Enable when Enable’s deliveries exceed OG&E’s pipeline receipts. Enable purchases gas from OG&E when OG&E’s pipeline receipts exceed Enable’s deliveries.The following table summarizes related party transactions between OG&E and its affiliate, Enable, during thethree and nine months endedSeptember 30, 2015 and 2014.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(In millions)	2015		2014		2015		2014
Operating Revenues:
Electricity to power electric compression assets	$	4.4	$	4.1	$	11.1	$	10.1
Cost of Sales:
Natural gas transportation services	$	8.8	$	8.8	$	26.3	$	26.2
Natural gas storage services	—		0.1		—		4.5
Natural gas purchases	2.5		3.4		7.1		6.9

During each of the nine months endedSeptember 30, 2015 and 2014, OG&E declared dividends to OGE Energy of $90.0 million.