Common Stock (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share

The following table presents Duke Energy’s basic and diluted EPS calculations and reconciles the weighted-average number of common shares outstanding to the diluted weighted-average number of common shares outstanding.

	Three Months Ended March 31,
(in millions, except per share amounts)	2015		2014
Income from continuing operations attributable to Duke Energy common shareholders	$	772	$	744
Weighted-average shares outstanding – basic	708		706
Weighted-average shares outstanding – diluted	708		706
Earnings per share from continuing operations attributable to Duke Energy common shareholders
Basic	$	1.09	$	1.05
Diluted	$	1.09	$	1.05
Potentially dilutive items excluded from the calculation(a)	2		2
Dividends declared per common share	$	0.795	$	0.78

(a) Certain stock options and performance stock awards were not included in the dilutive securities calculation because either the option exercise prices were greater than the average market price of the common shares during the presented periods, or performance measures related to the awards had not yet been met.