Organization and Basis of Presentation (Tables)

3 Months Ended

6 Months Ended

Jun. 30, 2013

Jun. 30, 2013

Organization And Basis Of Presentation [Line Items]

Schedule Of Unbilled Revenues With Restricted Receivables

(in millions)	June 30, 2013		December 31, 2012
Duke Energy	$	920	$	920
Duke Energy Carolinas		307		315
Progress Energy		217		187
Duke Energy Progress		122		112
Duke Energy Florida		95		74
Duke Energy Ohio		50		47
Duke Energy Indiana		13		3

Schedule of Net Income Amounts Attributable to Controlling Interests

(in millions)	Duke Energy		Progress Energy
Three Months Ended June 30, 2013
Income from continuing operations, net of tax	$	342	$	(13)
Discontinued operations, net of tax		(3)		(4)
Net income attributable to controlling interests	$	339	$	(17)
Three Months Ended June 30, 2012
Income from continuing operations, net of tax	$	445	$	67
Discontinued operations, net of tax		(1)		(4)
Net income attributable to controlling interests	$	444	$	63

(in millions)	Duke Energy		Progress Energy
Six Months Ended June 30, 2013
Income from continuing operations, net of tax	$	976	$	140
Discontinued operations, net of tax		(3)		(4)
Net income attributable to controlling interests	$	973	$	136
Six Months Ended June 30, 2012
Income from continuing operations, net of tax	$	738	$	206
Discontinued operations, net of tax		1		7
Net income attributable to controlling interests	$	739	$	213

Progress Energy [Member]

Organization And Basis Of Presentation [Line Items]

Schedule of Net Income Amounts Attributable to Controlling Interests

(in millions)	Duke Energy		Progress Energy
Three Months Ended June 30, 2013
Income from continuing operations, net of tax	$	342	$	(13)
Discontinued operations, net of tax		(3)		(4)
Net income attributable to controlling interests	$	339	$	(17)
Three Months Ended June 30, 2012
Income from continuing operations, net of tax	$	445	$	67
Discontinued operations, net of tax		(1)		(4)
Net income attributable to controlling interests	$	444	$	63

(in millions)	Duke Energy		Progress Energy
Six Months Ended June 30, 2013
Income from continuing operations, net of tax	$	976	$	140
Discontinued operations, net of tax		(3)		(4)
Net income attributable to controlling interests	$	973	$	136
Six Months Ended June 30, 2012
Income from continuing operations, net of tax	$	738	$	206
Discontinued operations, net of tax		1		7
Net income attributable to controlling interests	$	739	$	213

Duke Energy Ohio [Member]

Organization And Basis Of Presentation [Line Items]

Schedule of Unbilled Revenues Sold to CRC

(in millions)	June 30, 2013		December 31, 2012
Duke Energy Ohio	$	71	$	90
Duke Energy Indiana		117		132

Duke Energy Indiana [Member]

Organization And Basis Of Presentation [Line Items]

Schedule of Unbilled Revenues Sold to CRC

(in millions)	June 30, 2013		December 31, 2012
Duke Energy Ohio	$	71	$	90
Duke Energy Indiana		117		132