Acquisitions and Dispositions (Tables)

12 Months Ended

Dec. 31, 2015

Business Combinations [Abstract]

Schedule of purchase price allocation

The ownership interests in generating assets acquired are subject to rate-setting authority of the FERC, NCUC and PSCSC and accordingly, the assets are recorded at historical cost. The assets acquired are presented in the following table.

(in millions)
Inventory	$	56
Net property, plant and equipment	845
Total assets	901
Acquisition adjustment, recorded within property, plant and equipment	350
Total purchase price	$	1,251

Generation Facilities of Disposal Group

The following table presents information at the time of the sale related to the Duke Energy Ohio generation plants included in the Disposal Group.

				Total MW	Owned MW	Ownership
Facility	Plant Type	Primary Fuel	Location	Capacity(d)	Capacity(d)	Interest
Stuart(a)(c)	Fossil Steam	Coal	OH	2,308	900	39	%
Zimmer(a)	Fossil Steam	Coal	OH	1,300	605	46.5	%
Hanging Rock	Combined Cycle	Gas	OH	1,226	1,226	100	%
Miami Fort (Units 7 and 8)(b)	Fossil Steam	Coal	OH	1,020	652	64	%
Conesville(a)(c)	Fossil Steam	Coal	OH	780	312	40	%
Washington	Combined Cycle	Gas	OH	617	617	100	%
Fayette	Combined Cycle	Gas	PA	614	614	100	%
Killen(b)(c)	Fossil Steam	Coal	OH	600	198	33	%
Lee	Combustion Turbine	Gas	IL	568	568	100	%
Dick's Creek	Combustion Turbine	Gas	OH	136	136	100	%
Miami Fort	Combustion Turbine	Oil	OH	56	56	100	%
Total Midwest Generation				9,225	5,884

(a) Jointly owned with American Electric Power Generation Resources and The Dayton Power and Light Company.

(b) Jointly owned with The Dayton Power and Light Company.

(c) Not operated by Duke Energy Ohio.

(d) Total MW capacity is based on summer capacity.

Income Statement Disclosures

The following table presents the results of discontinued operations.

Duke Energy

	Years Ended December 31,
(in millions)	2015			2014			2013
Operating Revenues	$	543		$	1,748		$	1,885
Loss on disposition(a)	(45		)	(929		)	—
Income (loss) before income taxes(b)	$	59		$	(818	)	$	141
Income tax expense (benefit)	26			(294		)	56
Income (loss) from discontinued operations of the Disposal Group	33			(524		)	85
Other, net of tax(c)	(13		)	(52		)	1
Income (Loss) From Discontinued Operations, net of tax	$	20		$	(576	)	$	86

(a) The Loss on disposition includes impairments recorded to adjust the carrying amount of the assets to the estimated fair value of the business, based on the selling price to Dynegy less cost to sell.

(b) The Income (loss) before income taxes includes the pretax impact of an $81 million charge for the settlement agreement reached in a lawsuit related to the Disposal Group for the year ended December 31, 2015. Refer to Note 5 for further information related to the lawsuit.

(c) Relates to discontinued operations of businesses not related to the Disposal Group. Amounts include indemnifications provided for certain legal, tax and environmental matters, and foreign currency translation adjustments.

Duke Energy Ohio

	Years Ended December 31,
(in millions)	2015			2014			2013
Operating Revenues	$	412		$	1,299		$	1,503
Loss on disposition(a)	(52		)	(959		)	—
Income (loss) before income taxes(b)	$	44		$	(863	)	$	67
Income tax expense (benefit)	21			(300		)	32
Income (Loss) From Discontinued Operations, net of tax	$	23		$	(563	)	$	35

(a) The Loss on disposition includes impairments recorded to adjust the carrying amount of the assets to the estimated fair value of the business, based on the selling price to Dynegy less cost to sell.

(b) The Income (loss) before income taxes includes the pretax impact of an $81 million charge for the settlement agreement reached in a lawsuit related to the Disposal Group for the year ended December 31, 2015, respectively. Refer to Note 5 for further information related to the lawsuit.