Common Equity (Tables)

9 Months Ended

Sep. 30, 2014

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 September 30,				Nine Months Ended September 30,
(In millions except per share data)	2014		2013		2014		2013
Net Income Attributable to OGE Energy	$	187.3	$	215.2	$	337.4	$	330.0
Average Common Shares Outstanding
Basic average common shares outstanding	199.3		198.4		199.1		198.1
Effect of dilutive securities:
Contingently issuable shares (performance and restricted stock units)	0.9		1.3		0.8		1.2
Diluted average common shares outstanding	200.2		199.7		199.9		199.3
Basic Earnings Per Average Common Share Attributable to OGE Energy Common Shareholders	$	0.94	$	1.08	$	1.69	$	1.67
Diluted Earnings Per Average Common Share Attributable to OGE Energy Common Shareholders	$	0.94	$	1.08	$	1.69	$	1.66
Anti-dilutive shares excluded from earnings per share calculation	—		—		—		—