Goodwill (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2014

Dec. 31, 2013

Goodwill [Line Items]

Goodwill By Reportable Operating Segment

Foreign exchange and other changes		―		2		―		2
Balance at March 31, 2014
Goodwill		15,950		328		935		17,213
Accumulated impairment charges		―		―		(871)		(871)
Balance at March 31, 2014, as adjusted for accumulated impairment charges	$	15,950	$	328	$	64	$	16,342

(in millions)	Regulated Utilities		International Energy		Commercial Power		Total
Balance at December 31, 2013
Goodwill	$	15,950	$	326	$	935	$	17,211
Accumulated impairment charges		―		―		(871)		(871)
Balance at December 31, 2013, as adjusted for accumulated impairment charges		15,950		326		64		16,340

Duke Energy Ohio [Member]

Goodwill [Line Items]

Goodwill By Reportable Operating Segment

Balance at March 31, 2014
Goodwill		1,136		1,188		2,324
Accumulated impairment charges		(216)		(1,188)		(1,404)
Balance at March 31, 2014, as adjusted for accumulated impairment charges	$	920	$	―	$	920

(in millions)	Regulated Utilities		Commercial Power		Total
Balance at December 31, 2013
Goodwill	$	1,136	$	1,188	$	2,324
Accumulated impairment charges		(216)		(1,188)		(1,404)
Balance at December 31, 2013, as adjusted for accumulated impairment charges		920		―		920