CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income	$ 49.3	$ 28.0
Pension Plan and Restoration of Retirement Income Plan:
Amortization of deferred net loss, net of tax of $0.3 and $0.4, respectively	0.4	0.9
Postretirement Benefit Plans:
Amortization of deferred net loss, net of tax of $0.1 and $0.3, respectively	0.2	0.5
Amortization of prior service cost, net of tax of ($0.3) and ($0.3), respectively	(0.4)	(0.5)
Deferred commodity contracts hedging (gains) losses reclassified in net income, net of tax of $0.0 and ($0.1), respectively	0	(0.1)
Amortization of deferred interest rate swap hedging losses, net of tax of $0.1 and $0.1, respectively	0.1	0.1
Other comprehensive income, net of tax	0.3	0.9
Comprehensive income	49.6	28.9
Less: Comprehensive income attributable to noncontrolling interests	0	5.0
Total comprehensive income attributable to OGE Energy	$ 49.6	$ 23.9