Revenue (Tables)

3 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

Estimated remaining performance obligations are as follows:

	Remaining Performance Obligations
(in millions)	2020		2021		2022		2023		2024		Thereafter		Total
Piedmont	$	51	$	65	$	64	$	61	$	58	$	376	$	675

Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations:

	Remaining Performance Obligations
(in millions)	2020		2021		2022		2023		2024		Thereafter		Total
Progress Energy	$	84	$	92	$	87	$	44	$	45	$	58	$	410
Duke Energy Progress	6		8		8		8		8		—		38
Duke Energy Florida	78		84		79		36		37		58		372
Duke Energy Indiana	8		5		—		—		—		—		13

Disaggregation of Revenue

Disaggregated revenues are presented as follows:

	Three Months Ended March 31, 2020
			Duke				Duke		Duke		Duke			Duke
(in millions)	Duke		Energy		Progress		Energy		Energy		Energy			Energy
By market or type of customer	Energy		Carolinas		Energy		Progress		Florida		Ohio			Indiana		Piedmont
Electric Utilities and Infrastructure
Residential	$	2,261	$	756	$	1,064	$	502	$	562	$	176		$	265	$	—
General	1,492		549		648		319		329		114			181		—
Industrial	693		269		216		154		62		35			175		—
Wholesale	497		114		321		279		42		7			55		—
Other revenues	191		60		118		63		55		20			16		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,134	$	1,748	$	2,367	$	1,317	$	1,050	$	352		$	692	$	—
Gas Utilities and Infrastructure
Residential	$	362	$	—	$	—	$	—	$	—	$	97		$	—	$	264
Commercial	169		—		—		—		—		43			—		126
Industrial	41		—		—		—		—		6			—		36
Power Generation	—		—		—		—		—		—			—		11
Other revenues	30		—		—		—		—		6			—		24
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	602	$	—	$	—	$	—	$	—	$	152		$	—	$	461
Commercial Renewables
Revenue from contracts with customers	$	58	$	—	$	—	$	—	$	—	$	—		$	—	$	—
Other
Revenue from contracts with customers	$	6	$	—	$	—	$	—	$	—	$	—		$	—	$	—
Total revenue from contracts with customers	$	5,800	$	1,748	$	2,367	$	1,317	$	1,050	$	504		$	692	$	461
Other revenue sources(a)	$	149	$	—	$	55	$	21	$	30	$	(6	)	$	—	$	51
Total revenues	$	5,949	$	1,748	$	2,422	$	1,338	$	1,080	$	498		$	692	$	512

(a) Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

	Three Months Ended March 31, 2019
			Duke				Duke		Duke		Duke		Duke
(in millions)	Duke		Energy		Progress		Energy		Energy		Energy		Energy
By market or type of customer	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Electric Utilities and Infrastructure
Residential	$	2,370	$	760	$	1,114	$	536	$	578	$	189	$	306	$	—
General	1,427		496		632		306		326		103		197		—
Industrial	711		266		222		161		61		33		190		—
Wholesale	541		119		353		315		38		14		54		—
Other revenues	172		78		172		125		47		16		17		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,221	$	1,719	$	2,493	$	1,443	$	1,050	$	355	$	764	$	—
Gas Utilities and Infrastructure
Residential	$	414	$	—	$	—	$	—	$	—	$	112	$	—	$	302
Commercial	206		—		—		—		—		49		—		157
Industrial	48		—		—		—		—		7		—		42
Power Generation	—		—		—		—		—		—		—		13
Other revenues	63		—		—		—		—		8		—		56
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	731	$	—	$	—	$	—	$	—	$	176	$	—	$	570
Commercial Renewables
Revenue from contracts with customers	$	42	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other
Revenue from contracts with customers	$	4	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Total revenue from contracts with customers	$	5,998	$	1,719	$	2,493	$	1,443	$	1,050	$	531	$	764	$	570
Other revenue sources(a)	$	165	$	25	$	79	$	41	$	36	$	—	$	4	$	9
Total revenues	$	6,163	$	1,744	$	2,572	$	1,484	$	1,086	$	531	$	768	$	579

(a)

Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

Reserve for Credit Losses for Trade and Other Receivables

As described in Note 1, Duke Energy adopted the new guidance for credit losses effective January 1, 2020, using the modified retrospective method of adoption, which does not require restatement of prior year reported results. The following table presents the reserve for credit losses for trade and other receivables based on adoption of the new standard.

	March 31, 2020
				Duke						Duke			Duke			Duke		Duke
	Duke			Energy			Progress			Energy			Energy			Energy		Energy
(in millions)	Energy			Carolinas			Energy			Progress			Florida			Ohio		Indiana		Piedmont
Balance at December 31, 2019	$	76		$	10		$	16		$	8		$	7		$	4	$	3	$	6
Cumulative Change in Accounting Principle	5			1			2			1			1			—		—		1
Write-Offs	(10		)	(3		)	(4		)	(2		)	(2		)	—		—		(1		)
Credit Loss Expense	18			3			6			2			5			1		—		3
Balance at March 31, 2020	$	89		$	11		$	20		$	9		$	11		$	5	$	3	$	9

Aging of Trade Receivables

The aging of trade receivables is presented in the table below. Duke Energy considers receivables greater than 30 days outstanding past due.

	March 31, 2020
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Unbilled Receivables	$	716	$	285	$	195	$	85	$	110	$	1	$	16	$	32
0-30 days	1,584		448		585		321		262		45		24		134
30-60 days	216		69		67		44		23		9		1		18
60-90 days	65		18		20		14		6		2		1		5
90+ days	145		19		57		32		25		32		11		11
Trade and Other Receivables	$	2,726	$	839	$	924	$	496	$	426	$	89	$	53	$	200

Unbilled revenues are included within Receivables and Receivables of VIEs on the Condensed Consolidated Balance Sheets as shown in the following table.

(in millions)	March 31, 2020		December 31, 2019
Duke Energy	$	716	$	843
Duke Energy Carolinas	285		298
Progress Energy	195		217
Duke Energy Progress	85		122
Duke Energy Florida	110		95
Duke Energy Ohio	1		1
Duke Energy Indiana	16		16
Piedmont	32		78

These receivables for unbilled revenues are shown in the table below.

(in millions)	March 31, 2020		December 31, 2019
Duke Energy Ohio	$	61	$	82
Duke Energy Indiana	94		115