Common Stock (Tables)

3 Months Ended

Mar. 31, 2014

Common Stock [Line Items]

Schedule Of Earnings Per Share

(In millions, except per-share amounts)	(Loss) Income		Average Shares			EPS
Three Months Ended March 31, 2014
Loss from continuing operations attributable to Duke Energy common shareholders, as adjusted for participating securities — basic and diluted	$	(94)		706	$	(0.13)
Three Months Ended March 31, 2013
Income from continuing operations attributable to Duke Energy common shareholders, as adjusted for participating securities — basic and diluted	$	629		705	$	0.89