Organization and Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2013

Organization And Basis Of Presentation [Line Items]

Schedule Of Unbilled Revenues With Restricted Receivables

(in millions)	September 30, 2013		December 31, 2012
Duke Energy	$	856	$	920
Duke Energy Carolinas		288		315
Progress Energy		220		187
Duke Energy Progress		120		112
Duke Energy Florida		100		74
Duke Energy Ohio		33		47
Duke Energy Indiana		3		3

Duke Energy Ohio [Member]

Organization And Basis Of Presentation [Line Items]

Schedule of Unbilled Revenues Sold to CRC

(in millions)	September 30, 2013		December 31, 2012
Duke Energy Ohio	$	65	$	90
Duke Energy Indiana		126		132

Duke Energy Indiana [Member]

Organization And Basis Of Presentation [Line Items]

Schedule of Unbilled Revenues Sold to CRC

(in millions)	September 30, 2013		December 31, 2012
Duke Energy Ohio	$	65	$	90
Duke Energy Indiana		126		132