Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Line Items]

Schedule Of Quarterly Financial Information

Quarterly EPS amounts may not sum to the full-year total due to changes in the weighted average number of common shares outstanding and rounding.

	First		Second			Third		Fourth
(in millions, except per share data)	Quarter		Quarter			Quarter		Quarter			Total
2016
Operating revenues	$	5,377	$	5,213		$	6,576	$	5,577		$	22,743
Operating income	1,240		1,259			1,954		888			5,341
Income from continuing operations	577		624			1,001		376			2,578
Income (loss) from discontinued operations, net of tax	122		(112		)	180		(598		)	(408		)
Net income (loss)	699		512			1,181		(222		)	2,170
Net income (loss) attributable to Duke Energy Corporation	694		509			1,176		(227		)	2,152
Earnings per share:
Income from continuing operations attributable to Duke Energy Corporation common stockholders
Basic	$	0.83	$	0.90		$	1.44	$	0.53		$	3.71
Diluted	$	0.83	$	0.90		$	1.44	$	0.53		$	3.71
Income (Loss) from discontinued operations attributable to Duke Energy Corporation common stockholders
Basic	$	0.18	$	(0.16	)	$	0.26	$	(0.86	)	$	(0.60	)
Diluted	$	0.18	$	(0.16	)	$	0.26	$	(0.86	)	$	(0.60	)
Net income (loss) attributable to Duke Energy Corporation common stockholders
Basic	$	1.01	$	0.74		$	1.70	$	(0.33	)	$	3.11
Diluted	$	1.01	$	0.74		$	1.70	$	(0.33	)	$	3.11
2015
Operating revenues	$	5,792	$	5,302		$	6,202	$	5,075		$	22,371
Operating income	1,390		1,192			1,606		890			5,078
Income from continuing operations	755		576			890		433			2,654
Income (Loss) from discontinued operations, net of tax	112		(29		)	45		49			177
Net income	867		547			935		482			2,831
Net income attributable to Duke Energy Corporation	864		543			932		477			2,816
Earnings per share:
Income from continuing operations attributable to Duke Energy Corporation common stockholders
Basic	$	1.06	$	0.83		$	1.29	$	0.62		$	3.80
Diluted	$	1.06	$	0.83		$	1.29	$	0.62		$	3.80
Income (Loss) from discontinued operations attributable to Duke Energy Corporation common stockholders
Basic	$	0.16	$	(0.05	)	$	0.06	$	0.07		$	0.25
Diluted	$	0.16	$	(0.05	)	$	0.06	$	0.07		$	0.25
Net income attributable to Duke Energy Corporation common stockholders
Basic	$	1.22	$	0.78		$	1.35	$	0.69		$	4.05
Diluted	$	1.22	$	0.78		$	1.35	$	0.69		$	4.05

Schedule Of Unusual Or Infrequently Occurring Items

The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.

	First			Second			Third			Fourth
(in millions)	Quarter			Quarter			Quarter			Quarter			Total
2016
Costs to Achieve Mergers (see Note 2)	$	(120	)	$	(111	)	$	(84	)	$	(208	)	$	(523	)
Commercial Renewables Impairment (see Note 12)	—			—			(71		)	—			(71		)
Loss on Sale of International Disposal Group (see Note 2)	—			—			—			(514		)	(514		)
Impairment of Assets in Central America (see Note 2)	—			(194		)	—			—			(194		)
Cost Savings Initiatives (see Note 19)	(20		)	(24		)	(19		)	(29		)	(92		)
Total	$	(140	)	$	(329	)	$	(174	)	$	(751	)	$	(1,394	)
2015
Costs to Achieve Mergers	$	(21	)	$	(22	)	$	(24	)	$	(30	)	$	(97	)
Edwardsport Settlement (see Note 4)	—			—			(90		)	(3		)	(93		)
Ash Basin Settlement and Penalties (see Note 5)	—			—			(7		)	(7		)	(14		)
State Tax Adjustment related to Midwest Generation Sale	—			(41		)	—			—			(41		)
Cost Savings Initiatives (see Note 19)	—			—			—			(142		)	(142		)
Total	$	(21	)	$	(63	)	$	(121	)	$	(182	)	$	(387	)

Duke Energy Carolinas [Member]

Quarterly Financial Information Disclosure [Line Items]

Schedule Of Quarterly Financial Information

DUKE ENERGY CAROLINAS

	First		Second		Third		Fourth
(in millions)	Quarter		Quarter		Quarter		Quarter		Total
2016
Operating revenues	$	1,740	$	1,675	$	2,226	$	1,681	$	7,322
Operating income	481		464		815		302		2,062
Net income	271		261		494		140		1,166
2015
Operating revenues	$	1,901	$	1,707	$	2,061	$	1,560	$	7,229
Operating income	515		483		666		296		1,960
Net income	292		265		383		141		1,081

Schedule Of Unusual Or Infrequently Occurring Items

The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.

	First			Second			Third			Fourth
(in millions)	Quarter			Quarter			Quarter			Quarter			Total
2016
Costs to Achieve Mergers	$	(11	)	$	(12	)	$	(13	)	$	(68	)	$	(104	)
Cost Savings Initiatives (see Note 19)	(10		)	(10		)	(8		)	(11		)	(39		)
Total	$	(21	)	$	(22	)	$	(21	)	$	(79	)	$	(143	)
2015
Costs to Achieve Mergers	$	(9	)	$	(11	)	$	(11	)	$	(16	)	$	(47	)
Ash Basin Settlement and Penalties (see Note 5)	—			—			(1		)	(7		)	(8		)
Cost Savings Initiatives (see Note 19)	—			—			—			(93		)	(93		)
Total	$	(9	)	$	(11	)	$	(12	)	$	(116	)	$	(148	)

Progress Energy [Member]

Quarterly Financial Information Disclosure [Line Items]

Schedule Of Quarterly Financial Information

PROGRESS ENERGY

	First		Second		Third		Fourth
(in millions)	Quarter		Quarter		Quarter		Quarter		Total
2016
Operating revenues	$	2,332	$	2,348	$	2,965	$	2,208	$	9,853
Operating income	475		560		814		292		2,141
Income from continuing operations	212		274		449		104		1,039
Net income	212		274		449		106		1,041
Net income attributable to Parent	209		272		446		104		1,031
2015
Operating revenues	$	2,536	$	2,476	$	2,929	$	2,336	$	10,277
Operating income	549		504		756		351		2,160
Income from continuing operations	264		217		452		132		1,065
Net income	263		217		451		131		1,062
Net income attributable to Parent	260		215		448		128		1,051

Schedule Of Unusual Or Infrequently Occurring Items

The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.

	First			Second			Third			Fourth
(in millions)	Quarter			Quarter			Quarter			Quarter			Total
2016
Costs to Achieve Mergers	$	(7	)	$	(8	)	$	(10	)	$	(44	)	$	(69	)
Cost Savings Initiatives (see Note 19)	(8		)	(8		)	(10		)	(14		)	(40		)
Total	$	(15	)	$	(16	)	$	(20	)	$	(58	)	$	(109	)
2015
Costs to Achieve Mergers	$	(8	)	$	(8	)	$	(8	)	$	(10	)	$	(34	)
Ash Basin Settlement and Penalties (see Note 5)	—			—			(6		)	—			(6		)
Cost Savings Initiatives (see Note 19)	—			—			—			(36		)	(36		)
Total	$	(8	)	$	(8	)	$	(14	)	$	(46	)	$	(76	)

Duke Energy Progress [Member]

Quarterly Financial Information Disclosure [Line Items]

Schedule Of Quarterly Financial Information

DUKE ENERGY PROGRESS

	First		Second		Third		Fourth
(in millions)	Quarter		Quarter		Quarter		Quarter		Total
2016
Operating revenues	$	1,307	$	1,213	$	1,583	$	1,174	$	5,277
Operating income	258		255		438		135		1,086
Net income	137		131		271		60		599
2015
Operating revenues	$	1,449	$	1,193	$	1,488	$	1,160	$	5,290
Operating income	316		184		394		130		1,024
Net income	183		85		229		69		566

Schedule Of Unusual Or Infrequently Occurring Items

The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.

	First			Second			Third			Fourth
(in millions)	Quarter			Quarter			Quarter			Quarter			Total
2016
Costs to Achieve Mergers	$	(5	)	$	(5	)	$	(6	)	$	(40	)	$	(56	)
Cost Savings Initiatives (see Note 19)	(5		)	(5		)	(7		)	(6		)	(23		)
Total	$	(10	)	$	(10	)	$	(13	)	$	(46	)	$	(79	)
2015
Costs to Achieve Mergers	$	(5	)	$	(5	)	$	(6	)	$	(6	)	$	(22	)
Ash Basin Settlement and Penalties (see Note 5)	—			—			(6		)	—			(6		)
Cost Savings Initiatives (see Note 19)	—			—			—			(28		)	(28		)
Total	$	(5	)	$	(5	)	$	(12	)	$	(34	)	$	(56	)

Duke Energy Florida [Member]

Quarterly Financial Information Disclosure [Line Items]

Schedule Of Quarterly Financial Information

DUKE ENERGY FLORIDA

	First		Second		Third		Fourth
(in millions)	Quarter		Quarter		Quarter		Quarter		Total
2016
Operating revenues	$	1,024	$	1,133	$	1,381	$	1,030	$	4,568
Operating income	213		300		373		155		1,041
Net income	110		171		206		64		551
2015
Operating revenues	$	1,086	$	1,281	$	1,436	$	1,174	$	4,977
Operating income	227		315		357		216		1,115
Net income	113		165		216		105		599

Schedule Of Unusual Or Infrequently Occurring Items

The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.

	First			Second			Third			Fourth
(in millions)	Quarter			Quarter			Quarter			Quarter			Total
2016
Costs to Achieve Mergers	$	(2	)	$	(3	)	$	(4	)	$	(4	)	$	(13	)
Cost Savings Initiatives (see Note 19)	(2		)	(3		)	(3		)	(9		)	(17		)
Total	$	(4	)	$	(6	)	$	(7	)	$	(13	)	$	(30	)
2015
Costs to Achieve Mergers	$	(3	)	$	(3	)	$	(3	)	$	(4	)	$	(13	)
Cost Savings Initiatives (see Note 19)	—			—			—			(8		)	(8		)
Total	$	(3	)	$	(3	)	$	(3	)	$	(12	)	$	(21	)

Duke Energy Ohio [Member]

Quarterly Financial Information Disclosure [Line Items]

Schedule Of Quarterly Financial Information

DUKE ENERGY OHIO

	First		Second			Third			Fourth
(in millions)	Quarter		Quarter			Quarter			Quarter		Total
2016
Operating revenues	$	516	$	428		$	489		$	511	$	1,944
Operating income	96		55			106			90		347
Income from discontinued operations, net of tax	2		—			34			—		36
Net income	59		23			89			57		228
2015
Operating revenues	$	586	$	405		$	462		$	452	$	1,905
Operating income	111		43			76			73		303
Income (Loss) from discontinued operations, net of tax	90		(65		)	(2		)	—		23
Net income (loss)	149		(52		)	32			43		172

Schedule Of Unusual Or Infrequently Occurring Items

The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.

	First			Second			Third			Fourth
(in millions)	Quarter			Quarter			Quarter			Quarter			Total
2016
Costs to Achieve Mergers	$	(1	)	$	(1	)	$	(2	)	$	(2	)	$	(6	)
Cost Savings Initiatives (see Note 19)	(1		)	(1		)	—			(1		)	(3		)
Total	$	(2	)	$	(2	)	$	(2	)	$	(3	)	$	(9	)
2015
Costs to Achieve Mergers	$	(1	)	$	(1	)	$	(1	)	$	(1	)	$	(4	)
Cost Savings Initiatives (see Note 19)	—			—			—			(2		)	(2		)
Total	$	(1	)	$	(1	)	$	(1	)	$	(3	)	$	(6	)

Duke Energy Indiana [Member]

Quarterly Financial Information Disclosure [Line Items]

Schedule Of Quarterly Financial Information

DUKE ENERGY INDIANA

	First		Second		Third		Fourth
(in millions)	Quarter		Quarter		Quarter		Quarter		Total
2016
Operating revenues	$	714	$	702	$	809	$	733	$	2,958
Operating income	176		174		239		176		765
Net income	95		85		129		72		381
2015
Operating revenues	$	788	$	686	$	749	$	667	$	2,890
Operating income	210		146		117		171		644
Net income	108		68		46		94		316

Schedule Of Unusual Or Infrequently Occurring Items

The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.

	First			Second			Third			Fourth
(in millions)	Quarter			Quarter			Quarter			Quarter			Total
2016
Costs to Achieve Mergers	$	(1	)	$	(2	)	$	(3	)	$	(3	)	$	(9	)
Cost Savings Initiatives (see Note 19)	(1		)	(4		)	(1		)	(1		)	(7		)
Total	$	(2	)	$	(6	)	$	(4	)	$	(4	)	$	(16	)
2015
Costs to Achieve Mergers	$	(2	)	$	(1	)	$	(2	)	$	(2	)	$	(7	)
Edwardsport Settlement (see Note 4)	—			—			(90		)	(3		)	(93		)
Cost Savings Initiatives (see Note 19)	—			—			—			(6		)	(6		)
Total	$	(2	)	$	(1	)	$	(92	)	$	(11	)	$	(106	)