Revenue (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

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)	2019		2020		2021		2022		2023		Thereafter		Total
Progress Energy	$	86	$	121	$	87	$	82	$	39	$	42	$	457
Duke Energy Progress	7		9		9		9		9		9		52
Duke Energy Florida	79		112		78		73		30		33		405
Duke Energy Indiana	7		10		5		—		—		—		22

Estimated remaining performance obligations are as follows:

	Remaining Performance Obligations
(in millions)	2019		2020		2021		2022		2023		Thereafter		Total
Piedmont	$	53	$	69	$	65	$	64	$	61	$	431	$	743

Disaggregation of Revenue

Disaggregated revenues are presented as follows:

	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

	Three Months Ended March 31, 2018
			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	$	2,350	$	781	$	1,112	$	516	$	595	$	180	$	278	$	—
General	1,375		472		631		299		333		96		178		—
Industrial	664		255		208		145		62		30		173		—
Wholesale	633		119		446		397		50		—		68		—
Other revenues	139		67		129		85		43		14		17		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,161	$	1,694	$	2,526	$	1,442	$	1,083	$	320	$	714	$	—
Gas Utilities and Infrastructure
Residential	$	413	$	—	$	—	$	—	$	—	$	111	$	—	$	302
Commercial	201		—		—		—		—		49		—		152
Industrial	48		—		—		—		—		7		—		41
Power Generation	—		—		—		—		—		—		—		13
Other revenues	55		—		—		—		—		6		—		49
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	717	$	—	$	—	$	—	$	—	$	173	$	—	$	557
Commercial Renewables
Revenue from contracts with customers	$	33	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other
Revenue from contracts with customers	$	17	$	—	$	—	$	—	$	—	$	14	$	—	$	—
Total revenue from contracts with customers	$	5,928	$	1,694	$	2,526	$	1,442	$	1,083	$	507	$	714	$	557
Other revenue sources(a)	$	207	$	69	$	50	$	18	$	32	$	17	$	17	$	(4	)
Total revenues	$	6,135	$	1,763	$	2,576	$	1,460	$	1,115	$	524	$	731	$	553

(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.

Schedule Of Unbilled Revenues With Restricted Receivables

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, 2019		December 31, 2018
Duke Energy	$	733	$	896
Duke Energy Carolinas	281		313
Progress Energy	193		244
Duke Energy Progress	108		148
Duke Energy Florida	85		96
Duke Energy Ohio	1		2
Duke Energy Indiana	18		23
Piedmont	38		73

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

(in millions)	March 31, 2019		December 31, 2018
Duke Energy Ohio	$	62	$	86
Duke Energy Indiana	109		128