Joint Ownership (Tables)

12 Months Ended

Dec. 31, 2012

Jointly Owned Utility Plant Interests [Line Items]

Schedule Joint Ownership of Generating and Transmission Facilities

				December 31, 2012
				Ownership		Property, Plant,		Accumulated		Construction Work
(in millions)				Share		and Equipment		Depreciation		in Progress
Duke Energy
	Duke Energy Carolinas
		Production:
			Catawba Nuclear Station (Units 1 and 2)(a)	19.25	%	$	900	$	467	$	6
	Progress Energy
		Progress Energy Carolinas
		Production:
			Mayo Station(a)	83.83			807		292		65
			Shearon Harris Nuclear Station(a)	83.83			3,571		1,985		104
			Brunswick Nuclear Station(a)	81.67			1,842		985		98
			Roxboro Station (Unit 4)(a)	87.06			741		474		15
		Progress Energy Florida
		Production:
			Crystal River Nuclear Station (Unit 3)(a)(b)	91.78			―		―		―
			Intercession City Station (Unit P11)(a)(c)	66.67			24		13		1
	Duke Energy Ohio
		Production:
			Miami Fort Station (Units 7 and 8)(d)	64.0			617		212		4
			W.C. Beckjord Station (Unit 6)(d)(e)	37.5			―		―		―
			J.M. Stuart Station(d)(f)	39.0			820		265		13
			Conesville Station (Unit 4)(d)(f)	40.0			296		54		27
			W.M. Zimmer Station(d)	46.5			1,354		552		3
			Killen Station(d)(f)	33.0			310		142		2
			East Bend Station(a)	69.0			445		231		9
		Transmission(a)		Various			96		48		―
	Duke Energy Indiana
		Production:
			Gibson Station (Unit 5)(a)	50.05			305		149		6
			Vermillion(a)	62.5			153		56		―
		Transmission and local facilities(a)		Various			3,517		1,521		―
	International and local facilities
		Production:
			Brazil - Canoas I and II(g)	47.2			305		89		―
(a)		Included in USFE&G segment.
(b)		In February 2013, Duke Energy made the decision to retire Crystal River Unit 3. As of December 31, 2012, all costs associated with Crystal River Unit 3 are included within Regulatory assets on the Consolidated Balance Sheets of Duke Energy, Progress Energy and Progress Energy Florida. See Note 4 for additional information.
(c)		The co-owner of Intercession City Unit P11 has exclusive rights to the output of the unit during the months of June through September. Progress Energy Florida has the rights for the remainder of the year.
(d)		Included in Commercial Power segment.
(e)		In 2010, Duke Energy Ohio recorded impairment charges to write-down its share of W.C. Beckjord Station to fair value. See Note 12 for additional information.
(f)		Station is not operated by Duke Energy Ohio.
(g)		Included in International Energy segment.