Business Segments (Tables)

3 Months Ended

6 Months Ended

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Segment Reporting Information [Line Items]

Business Segment Data

		Three Months Ended June 30, 2013
(in millions)		USFE&G		Commercial Power		International Energy		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues(a)(b)		$	4,911	$	547	$	406	$	5,864	$	15	$	―	$	5,879
Intersegment revenues			9		10		―		19		21		(40)		―
	Total revenues	$	4,920	$	557	$	406	$	5,883	$	36	$	(40)	$	5,879
Segment income(a)(b)(c)(d)(e)		$	353	$	41	$	87	$	481	$	(139)	$	―	$	342
Add back noncontrolling interests component															3
Loss from discontinued operations, net of tax															(3)
Net income														$	342
Segment assets as of June 30, 2013		$	98,908	$	6,907	$	5,480	$	111,295	$	2,663	$	142	$	114,100
(a)	On May 1, 2013, the PUCO approved a Duke Energy Ohio settlement agreement that provides for a net annual increase in electric distribution revenues of $49 million, beginning in May 2013. This rate increase impacts USFE&G.
(b)	On May 30, 2013, the NCUC approved a Duke Energy Progress settlement agreement that included a $147 million increase in rates in the first year, beginning on June 1, 2013. This rate increase impacts USFE&G.
(c)	USFE&G recorded an after-tax impairment charge of $180 million, net of tax of $115 million, related to Duke Energy Florida's Crystal River Unit 3. See Note 4 for additional information.
(d)	USFE&G recorded an after-tax impairment charge of $13 million, net of tax of $9 million, 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 the Shearon Harris Nuclear Station (Harris) site. USFE&G also recorded an after-tax impairment charge of $44 million, net of tax of $21 million, related to the write-off of the wholesale portion of Levy investments at Duke Energy Florida in accordance with the 2013 Settlement. See Note 4 for additional information.
(e)	Other includes after-tax costs to achieve the merger with Progress Energy of $51 million, net of tax of $31 million. See Note 2 for additional information about the merger.

		Three Months Ended June 30, 2012
(in millions)		USFE&G		Commercial Power		International Energy		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues		$	2,688	$	488	$	397	$	3,573	$	4	$	―	$	3,577
Intersegment revenues			9		14		―		23		12		(35)		―
	Total revenues	$	2,697	$	502	$	397	$	3,596	$	16	$	(35)	$	3,577
Segment income		$	337	$	28	$	105	$	470	$	(25)	$	―	$	445
Add back noncontrolling interests component															4
Loss from discontinued operations, net of tax															(1)
Net income														$	448

		Six Months Ended June 30, 2013
(in millions)		USFE&G		Commercial Power		International Energy		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues(a)(b)		$	9,963	$	986	$	798	$	11,747	$	30	$	―	$	11,777
Intersegment revenues			17		23		―		40		41		(81)		―
	Total revenues	$	9,980	$	1,009	$	798	$	11,787	$	71	$	(81)	$	11,777
Segment income(a)(b)(c)(d)(e)		$	1,009	$	(1)	$	184	$	1,192	$	(216)	$	―	$	976
Add back noncontrolling interests component															3
Loss from discontinued operations, net of tax															(3)
Net income														$	976
(a)	On May 1, 2013, the PUCO approved a Duke Energy Ohio settlement agreement that provides for a net annual increase in electric distribution revenues of $49 million, beginning in May 2013. This rate increase impacts USFE&G.
(b)	On May 30, 2013, the NCUC approved a Duke Energy Progress settlement agreement that included a $147 million increase in rates in the first year, beginning on June 1, 2013. This rate increase impacts USFE&G.
(c)	USFE&G recorded an after-tax impairment charge of $180 million, net of tax of $115 million, related to Duke Energy Florida's Crystal River Unit 3. See Note 4 for additional information.
(d)	USFE&G recorded an after-tax impairment charge of $13 million, net of tax of $9 million, 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 the Shearon Harris Nuclear Station (Harris) site. USFE&G also recorded an after-tax impairment charge of $44 million, net of tax of $21 million, related to the write-off of the wholesale portion of Levy investments at Duke Energy Florida in accordance with the 2013 Settlement. See Note 4 for additional information.
(e)	Other includes after-tax costs to achieve the merger with Progress Energy of $85 million, net of tax of $52 million. See Note 2 for additional information about the merger.

		Six Months Ended June 30, 2012
(in millions)		USFE&G		Commercial Power		International Energy		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues(a)		$	5,348	$	1,052	$	799	$	7,199	$	8	$	―	$	7,207
Intersegment revenues			17		30		―		47		23		(70)		―
	Total revenues	$	5,365	$	1,082	$	799	$	7,246	$	31	$	(70)	$	7,207
Segment income(a)(b)		$	473	$	59	$	247	$	779	$	(41)	$	―	$	738
Add back noncontrolling interests component															8
Income from discontinued operations, net of tax															1
Net income														$	747
(a)	On January 25, 2012 and January 27, 2012, the Duke Energy Carolinas' South Carolina and North Carolina rate case settlement agreements were approved by the PSCSC and NCUC, respectively. Among other things, the rate case settlements included an annual base rate increase of $309 million in North Carolina and a $93 million annual base rate increase in South Carolina, both beginning in February 2012. These rate increases impact USFE&G.
(b)	USFE&G recorded an after-tax impairment charge of $268 million, net of tax of $152 million, related to Duke Energy Indiana's Edwardsport Integrated Gasification Combined Cycle (IGCC) project. USFE&G also recorded the reversal of expenses of $60 million, net of tax of $39 million, related to a prior year Voluntary Opportunity Plan in accordance with Duke Energy Carolinas' 2011 rate case.

Duke Energy Carolinas [Member]

Segment Reporting Information [Line Items]

Schedule of Net Loss for Other Segment

	Three Months Ended June 30,					Six Months Ended June 30,
(in millions)		2013		2012			2013		2012
Duke Energy Carolinas		$	(25)	$	(11)		$	(43)	$	(18)
Progress Energy			(55)		(58)			(133)		(97)
Duke Energy Progress			(14)		(7)			(20)		(9)
Duke Energy Florida			(7)		(5)			(12)		(7)
Duke Energy Indiana			(4)		(1)			(8)		(5)

Progress Energy [Member]

Segment Reporting Information [Line Items]

Schedule of Net Loss for Other Segment

	Three Months Ended June 30,					Six Months Ended June 30,
(in millions)		2013		2012			2013		2012
Duke Energy Carolinas		$	(25)	$	(11)		$	(43)	$	(18)
Progress Energy			(55)		(58)			(133)		(97)
Duke Energy Progress			(14)		(7)			(20)		(9)
Duke Energy Florida			(7)		(5)			(12)		(7)
Duke Energy Indiana			(4)		(1)			(8)		(5)

Duke Energy Progress [Member]

Segment Reporting Information [Line Items]

Schedule of Net Loss for Other Segment

	Three Months Ended June 30,					Six Months Ended June 30,
(in millions)		2013		2012			2013		2012
Duke Energy Carolinas		$	(25)	$	(11)		$	(43)	$	(18)
Progress Energy			(55)		(58)			(133)		(97)
Duke Energy Progress			(14)		(7)			(20)		(9)
Duke Energy Florida			(7)		(5)			(12)		(7)
Duke Energy Indiana			(4)		(1)			(8)		(5)

Duke Energy Florida [Member]

Segment Reporting Information [Line Items]

Schedule of Net Loss for Other Segment

	Three Months Ended June 30,					Six Months Ended June 30,
(in millions)		2013		2012			2013		2012
Duke Energy Carolinas		$	(25)	$	(11)		$	(43)	$	(18)
Progress Energy			(55)		(58)			(133)		(97)
Duke Energy Progress			(14)		(7)			(20)		(9)
Duke Energy Florida			(7)		(5)			(12)		(7)
Duke Energy Indiana			(4)		(1)			(8)		(5)

Duke Energy Ohio [Member]

Segment Reporting Information [Line Items]

Business Segment Data

		Three Months Ended June 30, 2013
(in millions)		Franchised Electric and Gas		Commercial Power		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues(a)		$	404	$	407	$	811	$	―	$	―	$	811
Intersegment revenues			―		8		8		―		(8)		―
	Total revenues	$	404	$	415	$	819	$	―	$	(8)	$	811
Segment income / Consolidated net income(a)		$	27	$	35	$	62	$	(4)	$	―	$	58
Segment assets as of June 30, 2013		$	6,568	$	4,116	$	10,684	$	100	$	(178)	$	10,606

		Three Months Ended June 30, 2012
(in millions)		Franchised Electric and Gas		Commercial Power		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues		$	387	$	330	$	717	$	―	$	―	$	717
Intersegment revenues			―		12		12		―		(12)		―
	Total revenues	$	387	$	342	$	729	$	―	$	(12)	$	717
Segment income / Consolidated net income		$	30	$	17	$	47	$	(2)	$	―	$	45

		Six Months Ended June 30, 2013
(in millions)		Franchised Electric and Gas		Commercial Power		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues(a)		$	896	$	662	$	1,558	$	―	$	―	$	1,558
Intersegment revenues			―		19		19		―		(19)		―
	Total revenues	$	896	$	681	$	1,577	$	―	$	(19)	$	1,558
Segment income / Consolidated net income(a)		$	80	$	(33)	$	47	$	(10)	$	―	$	37
(a)	On May 1, 2013, the PUCO approved a Duke Energy Ohio settlement agreement that provides for a net annual increase in electric distribution revenues of $49 million, beginning in May 2013. This rate increase impacts Franchised Electric and Gas.

		Six Months Ended June 30, 2012
(in millions)		Franchised Electric and Gas		Commercial Power		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues		$	860	$	769	$	1,629	$	―	$	―	$	1,629
Intersegment revenues			―		27		27		―		(27)		―
	Total revenues	$	860	$	796	$	1,656	$	―	$	(27)	$	1,629
Segment income / Consolidated net income		$	64	$	61	$	125	$	(6)	$	―	$	119

Duke Energy Indiana [Member]

Segment Reporting Information [Line Items]

Schedule of Net Loss for Other Segment

	Three Months Ended June 30,					Six Months Ended June 30,
(in millions)		2013		2012			2013		2012
Duke Energy Carolinas		$	(25)	$	(11)		$	(43)	$	(18)
Progress Energy			(55)		(58)			(133)		(97)
Duke Energy Progress			(14)		(7)			(20)		(9)
Duke Energy Florida			(7)		(5)			(12)		(7)
Duke Energy Indiana			(4)		(1)			(8)		(5)