CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
OPERATING REVENUES
Electric Utility	$ 560.4	$ 453.7
Natural Gas Midstream Operations (Note 1)	0	447.7
Total operating revenues	560.4	901.4
COST OF SALES
Electric Utility	293.4	201.1
Natural Gas Midstream Operations (Note 1)	0	351.9
Total cost of sales	293.4	553.0
OPERATING EXPENSES
Other operation and maintenance	112.4	148.0
Depreciation and amortization	67.2	91.9
Taxes other than income	25.6	33.1
Total operating expenses	205.2	273.0
OPERATING INCOME	61.8	75.4
OTHER INCOME (EXPENSE)
Equity in earnings of unconsolidated affiliates (Note 1)	47.9	0
Allowance for equity funds used during construction	1.1	1.2
Other income	1.4	14.7
Other expense	(3.3)	(6.5)
Net other income	47.1	9.4
INTEREST EXPENSE
Interest on long-term debt	35.1	39.7
Allowance for borrowed funds used during construction	(0.6)	(0.7)
Interest on short-term debt and other interest charges	1.4	2.2
Interest expense	35.9	41.2
INCOME BEFORE TAXES	73.0	43.6
INCOME TAX EXPENSE	23.7	15.6
NET INCOME	49.3	28.0
Less: Net income attributable to noncontrolling interests	0	4.9
NET INCOME ATTRIBUTABLE TO OGE ENERGY	$ 49.3	$ 23.1
BASIC AVERAGE COMMON SHARES OUTSTANDING	198.8	197.8
DILUTED AVERAGE COMMON SHARES OUTSTANDING	199.5	198.8
BASIC EARNINGS PER AVERAGE COMMON SHARE ATTRIBUTABLE TO OGE ENERGY COMMON SHAREHOLDERS	$ 0.25	$ 0.12
DILUTED EARNINGS PER AVERAGE COMMON SHARES ATTRIBUTABLE TO OGE ENERGY COMMON SHAREHOLDERS	$ 0.25	$ 0.12
DIVIDENDS DECLARED PER COMMON SHARE	$ 0.22500	$ 0.20875