Common Stock (Tables)

3 Months Ended

Mar. 31, 2018

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)	2018		2017
Income from continuing operations attributable to Duke Energy common stockholders excluding impact of participating securities	$	619	$	715
Weighted average shares outstanding – basic	701		700
Weighted average shares outstanding – diluted	701		700
Earnings per share from continuing operations attributable to Duke Energy common stockholders
Basic	$	0.88	$	1.02
Diluted	$	0.88	$	1.02
Potentially dilutive items excluded from the calculation(a)	2		2
Dividends declared per common share	$	0.89	$	0.855

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