CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
OPERATING REVENUES
Electric Utility operating revenues	$ 2,259.7		$ 2,128.7	$ 2,211.5
Natural Gas Midstream Operations operating revenues (Note 1)	608.0		1,542.5	1,704.4
Total operating revenues	2,867.7		3,671.2	3,915.9
COST OF SALES
Electric Utility Fuel and purchased power	950.0		831.4	966.0
Natural Gas Midstream Operations Cost of sales and fuel (Note 1)	478.9		1,087.3	1,311.9
Total cost of sales	1,428.9		1,918.7	2,277.9
OPERATING EXPENSES
Other operation and maintenance	489.2		601.5	581.2
Depreciation and amortization	297.3		371.0	307.1
Impairment of assets	0		0.4	6.3
Gain on insurance proceeds	0		(7.5)	(3.0)
Taxes other than income	98.8		110.2	99.7
Total operating expenses	885.3		1,075.6	991.3
OPERATING INCOME	553.5		676.9	646.7
OTHER INCOME (EXPENSE)
Equity in earnings of unconsolidated affiliates (Note 1)	101.9		0	0
Allowance for equity funds used during construction	6.6		6.2	20.4
Other income	31.8		17.6	19.8
Other expense	(22.2)		(16.5)	(21.7)
Net other income (expense)	118.1		7.3	18.5
INTEREST EXPENSE
Interest on long-term debt	145.6		158.9	146.1
Allowance for borrowed funds used during construction	(3.4)		(3.5)	(10.4)
Interest on short-term debt and other interest charges	5.3		8.7	5.2
Interest expense	147.5		164.1	140.9
INCOME BEFORE TAXES	524.1		520.1	524.3
INCOME TAX EXPENSE	130.3		135.1	160.7
NET INCOME	393.8		385.0	363.6
Less: Net income attributable to noncontrolling interests	6.2		30.0	20.7
NET INCOME ATTRIBUTABLE TO OGE ENERGY	$ 387.6		$ 355.0	$ 342.9
BASIC AVERAGE COMMON SHARES OUTSTANDING	198.2		197.1	195.8
DILUTED AVERAGE COMMON SHARES OUTSTANDING	199.4		198.1	198.5
BASIC EARNINGS PER AVERAGE COMMON SHARE ATTRIBUTABLE TO OGE ENERGY COMMON SHAREHOLDERS	$ 1.96	[1]	$ 1.80	$ 1.75
DILUTED EARNINGS PER AVERAGE COMMON SHARES ATTRIBUTABLE TO OGE ENERGY COMMON SHAREHOLDERS	$ 1.94	[1]	$ 1.79	$ 1.73
DIVIDENDS DECLARED PER COMMON SHARE	$ 0.8513		$ 0.7975	$ 0.7588

[1] Due to the impact of dilution on the earnings per share calculation, quarterly earnings per share amounts may not add to the total.