Common Equity (Tables)

9 Months Ended

Sep. 30, 2011

Equity [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

Basic and diluted earnings per share for the Company were calculated as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(In millions)	2011		2010		2011		2010
Net Income Attributable to OGE Energy	$	178.7	$	163.1	$	306.5	$	264.6
Average Common Shares Outstanding
Basic average common shares outstanding	98.0		97.4		97.9		97.3
Effect of dilutive securities:
Contingently issuable shares (performance units)	1.3		1.6		1.3		1.5
Diluted average common shares outstanding	99.3		99.0		99.2		98.8
Basic Earnings Per Average Common Share
Attributable to OGE Energy Common Shareholders	$	1.82	$	1.67	$	3.13	$	2.72
Diluted Earnings Per Average Common Share
Attributable to OGE Energy Common Shareholders	$	1.80	$	1.65	$	3.09	$	2.68
Anti-dilutive shares excluded from earnings per share calculation	—		—		—		—