Common Stock (Tables)

3 Months Ended

Mar. 31, 2016

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 stock outstanding to the diluted weighted average number of common shares outstanding.

	Three Months Ended March 31,
(in millions, except per share amounts)	2016		2015
Income from continuing operations attributable to Duke Energy common stockholders excluding impact of participating securities	$	691	$	772
Weighted average shares outstanding – basic	689		708
Weighted average shares outstanding – diluted	689		708
Earnings per share from continuing operations attributable to Duke Energy common stockholders
Basic	$	1.00	$	1.09
Diluted	$	1.00	$	1.09
Potentially dilutive items excluded from the calculation(a)	2		2
Dividends declared per common share	$	0.825	$	0.795

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