Organization and Basis of Presentation (Tables)

9 Months Ended

Sep. 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)	September 30, 2017		December 31, 2016
Duke Energy	$	771	$	831
Duke Energy Carolinas	307		313
Progress Energy	216		161
Duke Energy Progress	113		102
Duke Energy Florida	103		59
Duke Energy Ohio	2		2
Duke Energy Indiana	29		32
Piedmont	4		77

Schedule Of Net Income Amounts Attributable To Controlling Interests

For the three and nine months ended September 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 nine months ended September 30, 2016.

	Three Months Ended		Nine Months Ended
(in millions)	September 30, 2016		September 30, 2016
Income from Continuing Operations	$	1,001	$	2,202
Income from Continuing Operations Attributable to Noncontrolling Interests	2		5
Income from Continuing Operations Attributable to Duke Energy Corporation	$	999	$	2,197
Income from Discontinued Operations, net of tax	$	180	$	190
Income from Discontinued Operations Attributable to Noncontrolling Interests, net of tax	3		8
Income from Discontinued Operations Attributable to Duke Energy Corporation, net of tax	$	177	$	182
Net Income	$	1,181	$	2,392
Net Income Attributable to Noncontrolling Interests	5		13
Net Income Attributable to Duke Energy Corporation	$	1,176	$	2,379

Schedule of Utility Inventory

The components of inventory are presented in the tables below.

	September 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	$	2,335	$	767	$	1,132	$	780	$	351	$	83	$	312	$	2
Coal	581		197		231		130		101		17		136		—
Natural gas, oil and other fuel	349		36		221		108		114		39		2		51
Total inventory	$	3,265	$	1,000	$	1,584	$	1,018	$	566	$	139	$	450	$	53

	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 September 30,				Nine Months Ended September 30,
(in millions)	2017		2016		2017		2016
Duke Energy	$	107	$	107	$	289	$	285
Duke Energy Carolinas	9		6		27		21
Progress Energy	67		65		168		161
Duke Energy Progress	5		4		14		13
Duke Energy Florida	62		61		154		148
Duke Energy Ohio	24		26		75		77
Duke Energy Indiana	6		10		16		26
Piedmont	1		1		3		2

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)	September 30, 2017		December 31, 2016
Duke Energy Ohio	$	70	$	97
Duke Energy Indiana	119		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)	September 30, 2017		December 31, 2016
Duke Energy Ohio	$	70	$	97
Duke Energy Indiana	119		123