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Business Segments (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting Information [Line Items]

Business segment information is presented in the following tables. Segment assets presented exclude intercompany assets.



	Year Ended December 31, 2019
	Electric		Gas					Total
	Utilities and		Utilities and		Commercial			Reportable
(in millions)	Infrastructure		Infrastructure		Renewables			Segments		Other			Eliminations			Total
Unaffiliated Revenues	$	22,798	$	1,770	$	487		$	25,055	$	24		$	—		$	25,079
Intersegment Revenues	33		96		—			129		71			(200		)	—
Total Revenues	$	22,831	$	1,866	$	487		$	25,184	$	95		$	(200	)	$	25,079
Interest Expense	$	1,345	$	117	$	95		$	1,557	$	705		$	(58	)	$	2,204
Depreciation and amortization	3,951		256		168			4,375		178			(5		)	4,548
Equity in earnings (losses) of unconsolidated affiliates	9		114		(4		)	119		43			—			162
Income tax expense (benefit)	785		22		(115		)	692		(173		)	—			519
Segment income (loss)^(a)(b)	3,536		432		198			4,166		(452		)	—			3,714
Add back noncontrolling interest^(c)																(177		)
Add back preferred stock dividend																41
Loss from discontinued operations, net of tax																(7		)
Net income																$	3,571
Capital investments expenditures and acquisitions	$	8,263	$	1,539	$	1,423		$	11,225	$	221		$	—		$	11,446
Segment assets	135,561		13,921		6,020			155,502		3,148			188			158,838


(a)	Electric Utilities and Infrastructure includes a $27 million reduction of a prior year impairment at Citrus County CC related to the plant's cost cap. See Note 4 for additional information.


(b)	Gas Utilities and Infrastructure includes an after-tax impairment charge of $19 million for the remaining investment in Constitution. See Note 13 for additional information.


(c)	Includes the allocation of losses to noncontrolling tax equity members. See Note 1 for additional information.



	Year Ended December 31, 2018
	Electric		Gas					Total
	Utilities and		Utilities and		Commercial			Reportable
(in millions)	Infrastructure		Infrastructure		Renewables			Segments		Other			Eliminations			Total
Unaffiliated Revenues	$	22,242	$	1,783	$	477		$	24,502	$	19		$	—		$	24,521
Intersegment Revenues	31		98		—			129		70			(199		)	—
Total Revenues	$	22,273	$	1,881	$	477		$	24,631	$	89		$	(199	)	$	24,521
Interest Expense	$	1,288	$	106	$	88		$	1,482	$	657		$	(45	)	$	2,094
Depreciation and amortization	3,523		245		155			3,923		152			(1		)	4,074
Equity in earnings (losses) of unconsolidated affiliates	5		27		(1		)	31		52			—			83
Income tax expense (benefit)^(a)	799		78		(147		)	730		(282		)	—			448
Segment income (loss)^(b)(c)(d)(e)	3,058		274		9			3,341		(694		)	—			2,647
Add back noncontrolling interest component																(22		)
Loss from discontinued operations, net of tax																19
Net income																$	2,644
Capital investments expenditures and acquisitions	$	8,086	$	1,133	$	193		$	9,412	$	256		$	—		$	9,668
Segment assets	125,364		12,361		4,204			141,929		3,275			188			145,392


(a)	All segments include adjustments to the December 31, 2017, estimate of the income tax effects of the Tax Act. Electric Utilities and Infrastructure includes a $24 million expense, Gas Utilities and Infrastructure includes a $1 million expense, Commercial Renewables includes a $3 million benefit and Other includes a $2 million benefit. See Note 24 for additional information.


(b)	Electric Utilities and Infrastructure includes after-tax regulatory and legislative impairment charges of $202 million related to rate case orders, settlements or other actions of regulators or legislative bodies and an after-tax impairment charge of $46 million related to the Citrus County CC at Duke Energy Florida. See Note 4 for additional information.


(c)	Gas Utilities and Infrastructure includes an after-tax impairment charge of $42 million for the investment in Constitution. See Note 13 for additional information.


(d)	Commercial Renewables includes an impairment charge of $91 million, net of $2 million Noncontrolling interests, related to goodwill. See Note 12 for additional information.


(e)	Other includes $65 million of after-tax costs to achieve the Piedmont merger, $144 million of after-tax severance charges related to a companywide initiative and an $82 million after-tax loss on the sale of Beckjord described below. For additional information, see Note 2 for the Piedmont Merger and Note 21 for severance charges.

In February 2018, Duke Energy sold Beckjord, a nonregulated facility retired during 2014, and recorded a pretax loss of $106 million within (Losses) Gains on Sales of Other Assets and Other, net and $1 million within Operation, maintenance and other on Duke Energy's Consolidated Statements of Operations for the year ended December 31, 2018. The sale included the transfer of coal ash basins and other real property and indemnification from any and all potential future claims related to the property, whether arising under environmental laws or otherwise.



	Year Ended December 31, 2017
	Electric		Gas					Total
	Utilities and		Utilities and		Commercial			Reportable
(in millions)	Infrastructure		Infrastructure		Renewables			Segments		Other			Eliminations			Total
Unaffiliated Revenues	$	21,300	$	1,743	$	460		$	23,503	$	62		$	—		$	23,565
Intersegment Revenues	31		93		—			124		76			(200		)	—
Total Revenues	$	21,331	$	1,836	$	460		$	23,627	$	138		$	(200	)	$	23,565
Interest Expense	$	1,240	$	105	$	87		$	1,432	$	574		$	(20	)	$	1,986
Depreciation and amortization	3,010		231		155			3,396		131			—			3,527
Equity in earnings (losses) of unconsolidated affiliates	5		62		(5		)	62		57			—			119
Income tax expense (benefit)^(a)	1,355		116		(628		)	843		353			—			1,196
Segment income (loss)^(b)(c)(d)	3,210		319		441			3,970		(905		)	—			3,065
Add back noncontrolling interest component																5
Loss from discontinued operations, net of tax																(6		)
Net income																$	3,064
Capital investments expenditures and acquisitions	$	7,024	$	907	$	92		$	8,023	$	175		$	—		$	8,198
Segment assets	119,423		11,462		4,156			135,041		2,685			188			137,914


(a)	All segments include impacts of the Tax Act. Electric Utilities and Infrastructure includes a $231 million benefit, Gas Utilities and Infrastructure includes a $26 million benefit, Commercial Renewables includes a $442 million benefit and Other includes charges of $597 million.


(b)	Electric Utilities and Infrastructure includes after-tax regulatory settlement charges of $98 million.


(c)	Commercial Renewables includes after-tax impairment charges of $74 million related to certain wind projects and the Energy Management Solutions reporting unit. See Notes 11 and 12 for additional information.


(d)	Other includes $64 million of after-tax costs to achieve the Piedmont merger. See Note 2 for additional information.

Schedule of Revenue, By Products and Services

Products and Services

The following table summarizes revenues of the reportable segments by type.



	Retail		Wholesale		Retail				Total
(in millions)	Electric		Electric		Natural Gas		Other		Revenues
2019
Electric Utilities and Infrastructure	$	19,745	$	2,231	$	—	$	855	$	22,831
Gas Utilities and Infrastructure	—		—		1,782		84		1,866
Commercial Renewables	—		389		—		98		487
Total Reportable Segments	$	19,745	$	2,620	$	1,782	$	1,037	$	25,184
2018
Electric Utilities and Infrastructure	$	19,013	$	2,345	$	—	$	915	$	22,273
Gas Utilities and Infrastructure	—		—		1,817		64		1,881
Commercial Renewables	—		375		—		102		477
Total Reportable Segments	$	19,013	$	2,720	$	1,817	$	1,081	$	24,631
2017
Electric Utilities and Infrastructure	$	18,177	$	2,104	$	—	$	1,050	$	21,331
Gas Utilities and Infrastructure	—		—		1,732		104		1,836
Commercial Renewables	—		375		—		85		460
Total Reportable Segments	$	18,177	$	2,479	$	1,732	$	1,239	$	23,627

Duke Energy Ohio

Segment Reporting Information [Line Items]

Business Segment Data



	Year Ended December 31, 2019
	Electric		Gas		Total
	Utilities and		Utilities and		Reportable
(in millions)	Infrastructure		Infrastructure		Segments		Other			Eliminations		Total
Total revenues	$	1,456	$	484	$	1,940	$	—		$	—	$	1,940
Interest expense	$	80	$	29	$	109	$	—		$	—	$	109
Depreciation and amortization	182		83		265		—			—		265
Income tax expense (benefit)	20		21		41		(1		)	—		40
Segment income (loss)/Net income	159		85		244		(5		)	—		239
Loss from discontinued operations, net of tax												(1		)
Net income												$	238
Capital expenditures	$	680	$	272	$	952	$	—		$	—	$	952
Segment assets	6,188		3,116		9,304		34			—		9,338



	Year Ended December 31, 2018
	Electric		Gas		Total
	Utilities and		Utilities and		Reportable
(in millions)	Infrastructure		Infrastructure		Segments		Other			Eliminations		Total
Total revenues	$	1,450	$	506	$	1,956	$	1		$	—	$	1,957
Interest expense	$	67	$	24	$	91	$	1		$	—	$	92
Depreciation and amortization	183		85		268		—			—		268
Income tax expense (benefit)	47		24		71		(28		)	—		43
Segment income (loss)/Net income^(a)	186		93		279		(103		)	—		176
Capital expenditures	$	655	$	172	$	827	$	—		$	—	$	827
Segment assets	5,643		2,874		8,517		38			—		8,555

(a) Other includes the loss on the sale of Beckjord, see discussion above.



	Year Ended December 31, 2017
	Electric		Gas		Total
	Utilities and		Utilities and		Reportable
(in millions)	Infrastructure		Infrastructure		Segments		Other			Eliminations			Total
Total revenues	$	1,373	$	508	$	1,881	$	42		$	—		$	1,923
Interest expense	$	62	$	28	$	90	$	1		$	—		$	91
Depreciation and amortization	178		83		261		—			—			261
Income tax expense (benefit)	40		39		79		(20		)	—			59
Segment income (loss)	138		85		223		(30		)	—			193
Loss from discontinued operations, net of tax													(1		)
Net income													$	192
Capital expenditures	$	491	$	195	$	686	$	—		$	—		$	686
Segment assets	5,066		2,758		7,824		66			(15		)	7,875