Organization and Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2017

Organization And Basis Of Presentation [Line Items]

Schedule Of Unbilled Revenues With Restricted Receivables

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

(in millions)	June 30, 2017		December 31, 2016
Duke Energy	$	761	$	831
Duke Energy Carolinas	310		313
Progress Energy	220		161
Duke Energy Progress	125		102
Duke Energy Florida	95		59
Duke Energy Ohio	1		2
Duke Energy Indiana	13		32
Piedmont	1		77

Schedule Of Net Income Amounts Attributable To Controlling Interests

For the three and six months ended June 30, 2017, the Loss from Discontinued Operations, net of tax on Duke Energy's Condensed Consolidated Statements of Operations is entirely attributable to controlling interests. The following table presents Net Income Attributable to Duke Energy Corporation for continuing operations and discontinued operations for the three and six months ended June 30, 2016.

	Three Months Ended			Six Months Ended
(in millions)	June 30, 2016			June 30, 2016
Income from Continuing Operations	$	624		$	1,201
Income from Continuing Operations Attributable to Noncontrolling Interests	—			3
Income from Continuing Operations Attributable to Duke Energy Corporation	$	624		$	1,198
(Loss) Income from Discontinued Operations, net of tax	$	(112	)	$	10
Income from Discontinued Operations Attributable to Noncontrolling Interests, net of tax	3			5
(Loss) Income from Discontinued Operations Attributable to Duke Energy Corporation, net of tax	$	(115	)	$	5
Net Income	$	512		$	1,211
Net Income Attributable to Noncontrolling Interests	3			8
Net Income Attributable to Duke Energy Corporation	$	509		$	1,203

Schedule of Utility Inventory

The components of inventory are presented in the tables below.

	June 30, 2017
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Materials and supplies	$	2,368	$	791	$	1,129	$	782	$	347	$	85	$	321	$	2
Coal	665		239		262		161		101		17		147		—
Natural gas, oil and other fuel	336		36		230		110		120		32		2		36
Total inventory	$	3,369	$	1,066	$	1,621	$	1,053	$	568	$	134	$	470	$	38

	December 31, 2016
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Materials and supplies	$	2,374	$	767	$	1,167	$	813	$	354	$	84	$	312	$	1
Coal	774		251		314		148		166		19		190		—
Natural gas, oil and other fuel	374		37		236		115		121		34		2		65
Total inventory	$	3,522	$	1,055	$	1,717	$	1,076	$	641	$	137	$	504	$	66

Schedule of Excise Taxes

Excise taxes accounted for on a gross basis as both operating revenues and property and other taxes on the Condensed Consolidated Statements of Operations were as follows.

	Three Months Ended June 30,				Six Months Ended June 30,
(in millions)	2017		2016		2017		2016
Duke Energy	$	91	$	87	$	182	$	178
Duke Energy Carolinas	9		7		18		15
Progress Energy	55		50		101		96
Duke Energy Progress	4		4		9		9
Duke Energy Florida	51		46		92		87
Duke Energy Ohio	23		22		51		51
Duke Energy Indiana	3		8		10		16
Piedmont	1		—		2		1

Duke Energy Ohio [Member]

Organization And Basis Of Presentation [Line Items]

Schedule Of Unbilled Revenues With Restricted Receivables

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

(in millions)	June 30, 2017		December 31, 2016
Duke Energy Ohio	$	70	$	97
Duke Energy Indiana	118		123

Duke Energy Indiana [Member]

Organization And Basis Of Presentation [Line Items]

Schedule Of Unbilled Revenues With Restricted Receivables

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

(in millions)	June 30, 2017		December 31, 2016
Duke Energy Ohio	$	70	$	97
Duke Energy Indiana	118		123