Business Segments (Tables)

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Segment Reporting Information [Line Items]

Business Segment Data

		Three Months Ended March 31, 2013
(in millions)		USFE&G		Commercial Power		International Energy		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues		$	5,052	$	439	$	392	$	5,883	$	15	$	―	$	5,898
Intersegment revenues			8		13		―		21		20		(41)		―
	Total revenues	$	5,060	$	452	$	392	$	5,904	$	35	$	(41)	$	5,898
Segment income / Consolidated net income (a)		$	656	$	(42)	$	97	$	711	$	(77)	$	―	$	634
Segment assets			98,419		6,937		5,521		110,877		2,696		93		113,666
(a)	Other includes after-tax costs to achieve the merger with Progress Energy of $34 million, net of tax of $21 million. See Note 2 for additional information.

		Three Months Ended March 31, 2012
(in millions)		USFE&G		Commercial Power		International Energy		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues(a)		$	2,660	$	564	$	402	$	3,626	$	4	$	―	$	3,630
Intersegment revenues			8		16		―		24		11		(35)		―
	Total revenues	$	2,668	$	580	$	402	$	3,650	$	15	$	(35)	$	3,630
Segment income(a)(b)		$	136	$	31	$	142	$	309	$	(16)	$	―	$	293
Add back noncontrolling interest component															4
Income from discontinued operations, net of tax															2
Consolidated net income														$	299
(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. The impact of these rates impacts 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 March 31,
(in millions)	2013		2012
Duke Energy Carolinas	$	(19)	$	(8)
Duke Energy Progress		(7)		(3)
Duke Energy Florida		(5)		(1)
Duke Energy Indiana		(4)		(4)

Progress Energy [Member]

Segment Reporting Information [Line Items]

Business Segment Data

		Three Months Ended March 31, 2013
(in millions)		Franchised Electric		Total Reportable Segment		Other		Eliminations		Consolidated
Unaffiliated revenues		$	2,169	$	2,169	$	9	$	―	$	2,178
Affiliated revenues			9		9		―		(1)		8
	Total revenues	$	2,178	$	2,178	$	9	$	(1)	$	2,186
Segment income(a)		$	232	$	232	$	(79)	$	―	$	153
Add back noncontrolling interest component											1
Consolidated net income										$	154
Segment assets			36,786		36,786		520		(21)		37,285
(a)	Other includes after-tax costs to achieve the merger with Duke Energy of $12 million, net of tax of $8 million. See Note 2 for additional information.

		Three Months Ended March 31, 2012
(in millions)		Franchised Electric		Total Reportable Segment		Other		Eliminations		Consolidated
Unaffiliated revenues		$	2,099	$	2,099	$	3	$	―	$	2,102
Affiliated revenues			1		1		―		(1)		―
	Total revenues	$	2,100	$	2,100	$	3	$	(1)	$	2,102
Segment income(a)		$	178	$	178	$	(39)	$	―	$	139
Add back noncontrolling interest component											2
Income from discontinued operations, net of tax											11
Consolidated net income										$	152
(a)	Other includes after-tax costs to achieve the merger with Duke Energy of $4 million, net of tax of $3 million. See Note 2 for additional information.

Duke Energy Progress [Member]

Segment Reporting Information [Line Items]

Schedule of Net Loss for Other Segment

	Three Months Ended March 31,
(in millions)	2013		2012
Duke Energy Carolinas	$	(19)	$	(8)
Duke Energy Progress		(7)		(3)
Duke Energy Florida		(5)		(1)
Duke Energy Indiana		(4)		(4)

Duke Energy Florida [Member]

Segment Reporting Information [Line Items]

Schedule of Net Loss for Other Segment

	Three Months Ended March 31,
(in millions)	2013		2012
Duke Energy Carolinas	$	(19)	$	(8)
Duke Energy Progress		(7)		(3)
Duke Energy Florida		(5)		(1)
Duke Energy Indiana		(4)		(4)

Duke Energy Ohio [Member]

Segment Reporting Information [Line Items]

Business Segment Data

		Three Months Ended March 31, 2013
(in millions)		Franchised Electric and Gas		Commercial Power		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues		$	492	$	255	$	747	$	―	$	―	$	747
Intersegment revenues			―		11		11		―		(11)		―
	Total revenues	$	492	$	266	$	758	$	―	$	(11)	$	747
Segment income / Consolidated net income		$	53	$	(67)	$	(14)	$	(7)	$	―	$	(21)
Segment assets			6,514		4,120		10,634		109		(160)		10,583

		Three Months Ended March 31, 2012
(in millions)		Franchised Electric and Gas		Commercial Power		Total Reportable Segments		Other		Eliminations		Consolidated
Unaffiliated revenues		$	473	$	439	$	912	$	―	$	―	$	912
Intersegment revenues			―		15		15		―		(15)		―
	Total revenues	$	473	$	454	$	927	$	―	$	(15)	$	912
Segment income / Consolidated net income		$	34	$	44	$	78	$	(4)	$	―	$	74

Duke Energy Indiana [Member]

Segment Reporting Information [Line Items]

Schedule of Net Loss for Other Segment

	Three Months Ended March 31,
(in millions)	2013		2012
Duke Energy Carolinas	$	(19)	$	(8)
Duke Energy Progress		(7)		(3)
Duke Energy Florida		(5)		(1)
Duke Energy Indiana		(4)		(4)