Goodwill (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2013

Dec. 31, 2012

Goodwill [Line Items]

Goodwill By Reportable Operating Segment

Acquisitions (a)		2		2		(5)		(1)
Foreign exchange and other changes		(2)		―		(17)		(19)
Balance at September 30, 2013
Goodwill		15,950		935		331		17,216
Accumulated impairment charges		―		(871)		―		(871)
Balance at September 30, 2013, as adjusted for accumulated impairment charges	$	15,950	$	64	$	331	$	16,345

(in millions)	USFE&G		Commercial Power		International Energy		Total
Balance at December 31, 2012
Goodwill	$	15,950	$	933	$	353	$	17,236
Accumulated impairment charges		―		(871)		―		(871)
Balance at December 31, 2012, as adjusted for accumulated impairment charges		15,950		62		353		16,365

Duke Energy Ohio [Member]

Goodwill [Line Items]

Goodwill By Reportable Operating Segment

Foreign exchange and other changes		(1)		―		(1)
Balance at September 30, 2013
Goodwill		1,136		1,188		2,324
Accumulated impairment charges		(216)		(1,188)		(1,404)
Balance at September 30, 2013, as adjusted for accumulated impairment charges	$	920	$	―	$	920

(in millions)	Franchised Electric & Gas		Commercial Power		Total
Balance at December 31, 2012
Goodwill	$	1,137	$	1,188	$	2,325
Accumulated impairment charges		(216)		(1,188)		(1,404)
Balance at December 31, 2012, as adjusted for accumulated impairment charges		921		―		921