Common Stock (Tables)

3 Months Ended

Mar. 31, 2017

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)	2017		2016
Income from continuing operations attributable to Duke Energy common stockholders excluding impact of participating securities	$	715	$	574
Weighted average shares outstanding – basic	700		689
Weighted average shares outstanding – diluted	700		689
Earnings per share from continuing operations attributable to Duke Energy common stockholders
Basic	$	1.02	$	0.83
Diluted	$	1.02	$	0.83
Potentially dilutive items excluded from the calculation(a)	2		2
Dividends declared per common share	$	0.855	$	0.825

(a) Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met.