Business Segments (Tables)

9 Months Ended

Sep. 30, 2014

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 September 30,						Nine Months Ended September 30,
(in millions)	2014			2013			2014			2013
Duke Energy Carolinas	$	(19	)	$	(26	)	$	(67	)	$	(69	)
Progress Energy	(48		)	(72		)	(145		)	(205		)
Duke Energy Progress	(10		)	(20		)	(23		)	(40		)
Duke Energy Florida	(5		)	(6		)	(16		)	(18		)
Duke Energy Indiana	(3		)	(5		)	(10		)	(13		)

	Three Months Ended September 30, 2014
(in millions)	Regulated Utilities		International Energy		Commercial Power			Total Reportable Segments		Other			Eliminations			Consolidated
Unaffiliated revenues	$	5,975	$	366	$	50		$	6,391	$	4		$	—		$	6,395
Intersegment revenues	11		—		—			11		21			(32		)	—
Total revenues	$	5,986	$	366	$	50		$	6,402	$	25		$	(32	)	$	6,395
Segment income (loss)(a)	$	920	$	80	$	(17	)	$	983	$	(92	)	$	(3	)	$	888
Add back noncontrolling interests component																3
Income from discontinued operations, net of tax																378
Net income																$	1,269
Segment assets	$	105,172	$	5,159	$	6,196		$	116,527	$	2,944		$	185		$	119,656

(a)    Other includes costs to achieve the Progress Energy merger.

	Three Months Ended September 30, 2013
(in millions)	Regulated Utilities		International Energy		Commercial Power			Total Reportable Segments		Other			Eliminations			Consolidated
Unaffiliated revenues(a)	$	5,768	$	370	$	56		$	6,194	$	23		$	—		$	6,217
Intersegment revenues	18		—		2			20		24			(44		)	—
Total revenues	$	5,786	$	370	$	58		$	6,214	$	47		$	(44	)	$	6,217
Segment income (loss)(a)(b)	$	923	$	116	$	(28	)	$	1,011	$	(64	)	$	(5	)	$	942
Add back noncontrolling interests component																4
Income from discontinued operations, net of tax																62
Net income																$	1,008

(a) In September 2013, Duke Energy Carolinas implemented revised customer rates approved by the NCUC and the PSCSC. These rate increases impact Regulated Utilities.

(b) Other includes costs to achieve the Progress Energy merger.

	Nine Months Ended September 30, 2014
(in millions)	Regulated Utilities		International Energy		Commercial Power			Total Reportable Segments		Other			Eliminations			Consolidated
Unaffiliated revenues	$	17,041	$	1,111	$	195		$	18,347	$	19		$	—		$	18,366
Intersegment revenues	33		—		—			33		60			(93		)	—
Total revenues	$	17,074	$	1,111	$	195		$	18,380	$	79		$	(93	)	$	18,366
Segment income (loss)(a)(b)	$	2,346	$	356	$	(70	)	$	2,632	$	(269	)	$	(7	)	$	2,356
Add back noncontrolling interests component																11
Loss from discontinued operations, net of tax																(578		)
Net income																$	1,789

(a) Commercial Power recorded a pretax impairment charge of $94 million related to reducing the carrying value of OVEC to zero. See Note 13 for additional information.

(b) Other includes costs to achieve the Progress Energy merger.

	Nine Months Ended September 30, 2013
(in millions)	Regulated Utilities		International Energy		Commercial Power			Total Reportable Segments		Other			Eliminations			Consolidated
Unaffiliated revenues(a)(b)(c)(d)	$	15,731	$	1,168	$	184		$	17,083	$	49		$	—		$	17,132
Intersegment revenues	35		—		5			40		64			(104		)	—
Total revenues	$	15,766	$	1,168	$	189		$	17,123	$	113		$	(104	)	$	17,132
Segment income (loss)(a)(b)(c)(d)(e)(f)	$	1,932	$	300	$	(54	)	$	2,178	$	(278	)	$	(10	)	$	1,890
Add back noncontrolling interest																12
Income from discontinued operations, net of tax																82
Net income																$	1,984

(a) In May 2013, the PUCO approved a Duke Energy Ohio settlement agreement that provides for a net annual increase in electric distribution revenues beginning in May 2013. This rate increase impacts Regulated Utilities.

(b) In June 2013, NCUC approved a Duke Energy Progress settlement agreement that included an increase in rates in the first year beginning in June 2013. This rate increase impacts Regulated Utilities.

(c) In September 2013, Duke Energy Carolinas implemented revised customer rates approved by the NCUC and the PSCSC. These rate increases impact Regulated Utilities.

(d) Regulated Utilities recorded an impairment charge related to Duke Energy Florida's Crystal River Unit 3. See Note 4 for additional information.

(e) Regulated Utilities recorded an impairment charge related to the letter Duke Energy Progress filed with the NRC requesting the NRC to suspend its review activities associated with the combined construction and operating license (COL) at Harris site. Regulated Utilities also recorded an impairment charge related to the write-off of the wholesale portion of the Levy investments at Duke Energy Florida in accordance with the 2013 Settlement. See Note 4 for additional information.

(f) Other includes costs to achieve the Progress Energy merger.

Duke Energy Ohio [Member]

Segment Reporting Information [Line Items]

Business Segment Data

All of Duke Energy Ohio’s revenues are generated domestically and its long-lived assets are all in the U.S.

	Three Months Ended September 30, 2014
(in millions)	Regulated Utilities		Commercial Power			Total Reportable Segments		Other			Eliminations			Consolidated
Unaffiliated revenues	$	440	$	6		$	446	$	—		$	—		$	446
Intersegment revenues	1		—			1		—			(1		)	—
Total revenues	$	441	$	6		$	447	$	—		$	(1	)	$	446
Segment income (loss)	$	43	$	(13	)	$	30	$	(4	)	$	—		$	26
Income from discontinued operations, net of tax														$	413
Net income														439
Segment assets	$	7,297	$	3,266		$	10,563	$	131		$	(622	)	$	10,072

	Three Months Ended September 30, 2013
(in millions)	Regulated Utilities		Commercial Power			Total Reportable Segments		Other			Eliminations		Consolidated
Unaffiliated revenues	$	421	$	17		$	438	$	—		$	—	$	438
Total revenues	$	421	$	17		$	438	$	—		$	—	$	438
Segment income (loss)	$	42	$	(13	)	$	29	$	(5	)	$	—	$	24
Income from discontinued operations, net of tax													35
Net income													$	59

	Nine Months Ended September 30, 2014
(in millions)	Regulated Utilities		Commercial Power			Total Reportable Segments		Other			Eliminations			Consolidated
Unaffiliated revenues	$	1,416	$	17		$	1,433	$	—		$	—		$	1,433
Intersegment revenues	1		—			1		—			(1		)	—
Total revenues	$	1,417	$	17		$	1,434	$	—		$	(1	)	$	1,433
Segment income (loss)(a)	$	151	$	(101	)	$	50	$	(11	)	$	—		$	39
Loss from discontinued operations, net of tax														(597		)
Net loss														$	(558	)

a) Duke Energy Ohio recorded a pretax impairment charge of $94 million related to reducing the carrying value of OVEC to zero. See Note 13 for additional information.

	Nine Months Ended September 30, 2013
(in millions)	Regulated Utilities		Commercial Power			Total Reportable Segments		Other			Eliminations		Consolidated
Unaffiliated revenues	$	1,317	$	32		$	1,349	$	—		$	—	$	1,349
Total revenues	$	1,317	$	32		$	1,349	$	—		$	—	$	1,349
Segment income (loss)	$	122	$	(51	)	$	71	$	(14	)	$	—	$	57
Income from discontinued operations, net of tax													39
Net income													$	96