Common Equity (Tables)

6 Months Ended

Jun. 30, 2012

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				Six Months Ended
	June 30,				June 30,
(In millions)	2012		2011		2012		2011
Net Income Attributable to OGE Energy	$	93.9	$	103.0	$	131.0	$	127.8
Average Common Shares Outstanding
Basic average common shares outstanding	98.6		98.0		98.4		97.8
Effect of dilutive securities:
Contingently issuable shares (performance units)	0.3		1.3		0.4		1.4
Diluted average common shares outstanding	98.9		99.3		98.8		99.2
Basic Earnings Per Average Common Share Attributable to OGE Energy Common Shareholders	$	0.95	$	1.05	$	1.33	$	1.31
Diluted Earnings Per Average Common Share Attributable to OGE Energy Common Shareholders	$	0.95	$	1.04	$	1.33	$	1.29
Anti-dilutive shares excluded from earnings per share calculation	—		—		—		—