Business Segments (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting Information [Line Items]

Business Segment Data

The following table summarizes the net loss for Other at each of these registrants.

	Three Months Ended March 31,
(in millions)	2015			2014
Duke Energy Carolinas	$	(8	)	$	(21	)
Progress Energy(a)	(42		)	(52		)
Duke Energy Progress	(4		)	(10		)
Duke Energy Florida	(3		)	(4		)
Duke Energy Indiana	(2		)	(3		)

(a) Other for Progress Energy also includes interest expense on corporate debt instruments of $60 million and $63 million for the three months ended March 31, 2015 and 2014, respectively.

	Three Months Ended March 31, 2015
(in millions)	Regulated Utilities		International Energy		Commercial Power		Total Reportable Segments		Other			Eliminations			Consolidated
Unaffiliated revenues	$	5,713	$	273	$	73	$	6,059	$	6		$	—		$	6,065
Intersegment revenues	10		—		—		10		21			(31		)	—
Total revenues	$	5,723	$	273	$	73	$	6,069	$	27		$	(31	)	$	6,065
Segment income (loss)(a)	$	774	$	36	$	1	$	811	$	(37	)	$	(1	)	$	773
Add back noncontrolling interests component															3
Income from discontinued operations, net of tax															91
Net income															$	867
Segment assets	$	106,642	$	4,892	$	6,202	$	117,736	$	4,230		$	176		$	122,142

(a)    Other includes after-tax costs to achieve the Progress Energy merger of $13 million.

	Three Months Ended March 31, 2014
(in millions)	Regulated Utilities		International Energy		Commercial Power			Total Reportable Segments		Other			Eliminations			Consolidated
Unaffiliated revenues	$	5,795	$	382	$	81		$	6,258	$	5		$	—		$	6,263
Intersegment revenues	10		—		—			10		20			(30		)	—
Total revenues	$	5,805	$	382	$	81		$	6,268	$	25		$	(30	)	$	6,263
Segment income (loss)(a)(b)	$	737	$	130	$	(32	)	$	835	$	(87	)	$	(2	)	$	746
Add back noncontrolling interest																4
Loss from discontinued operations, net of tax																(843		)
Net loss																$	(93	)

(a) Commercial Power recorded a pretax impairment charge of $94 million related to Ohio Valley Electric Corporation (OVEC). See Note 12 for additional information.

(b)    Other includes after-tax costs to achieve the Progress Energy merger of $34 million.

Duke Energy Ohio [Member]

Segment Reporting Information [Line Items]

Business Segment Data

	Three Months Ended March 31, 2015
(in millions)	Regulated Utilities		Commercial Power			Total Reportable Segments		Other			Eliminations			Consolidated
Unaffiliated revenues	$	572	$	14		$	586	$	—		$	—		$	586
Total revenues	$	572	$	14		$	586	$	—		$	—		$	586
Segment income (loss)	$	70	$	(9	)	$	61	$	(2	)	$	—		$	59
Income from discontinued operations, net of tax														90
Net income														$	149
Segment assets	$	6,782	$	2,984		$	9,766	$	43		$	(13	)	$	9,796

	Three Months Ended March 31, 2014
(in millions)	Regulated Utilities		Commercial Power			Total Reportable Segments			Other			Eliminations		Consolidated
Unaffiliated revenues	$	562	$	13		$	575		$	—		$	—	$	575
Total revenues	$	562	$	13		$	575		$	—		$	—	$	575
Segment income (loss)(a)	$	61	$	(74	)	$	(13	)	$	(2	)	$	—	$	(15	)
Loss from discontinued operations, net of tax														(875		)
Net loss														$	(890	)

(a)    Commercial Power recorded a pretax impairment charge of $94 million related to OVEC. See Note 12 for additional information.