Organization and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2018

Organization And Basis Of Presentation [Line Items]

Schedule of Cash, Cash Equivalents and Restricted Cash

The following table presents the components of Cash, cash equivalents and restricted cash included in the Condensed Consolidated Balance Sheets.

	March 31, 2018						December 31, 2017
					Duke						Duke
	Duke		Progress		Energy		Duke		Progress		Energy
	Energy		Energy		Florida		Energy		Energy		Florida
Current Assets
Cash and cash equivalents	$	421	$	20	$	6	$	358	$	40	$	13
Other	149		13		13		138		40		40
Other Noncurrent Assets
Other	9		6		—		9		7		—
Total Cash, cash equivalents and restricted cash	$	579	$	39	$	19	$	505	$	87	$	53

Schedule of Utility Inventory

The components of inventory are presented in the tables below.

	March 31, 2018
			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	$	2,293	$	763	$	1,095	$	767	$	329	$	82	$	310	$	1
Coal	551		176		221		125		96		13		141		—
Natural gas, oil and other fuel	305		41		221		110		110		13		2		28
Total inventory	$	3,149	$	980	$	1,537	$	1,002	$	535	$	108	$	453	$	29

	December 31, 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	$	2,293	$	744	$	1,118	$	774	$	343	$	82	$	309	$	2
Coal	603		192		255		139		116		17		139		—
Natural gas, oil and other fuel	354		35		219		104		115		34		2		64
Total inventory	$	3,250	$	971	$	1,592	$	1,017	$	574	$	133	$	450	$	66

Schedule of Excise Taxes

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

	Three Months Ended March 31,
(in millions)	2018		2017
Duke Energy	$	99	$	91
Duke Energy Carolinas	8		9
Progress Energy	54		46
Duke Energy Progress	5		5
Duke Energy Florida	49		41
Duke Energy Ohio	30		28
Duke Energy Indiana	6		7
Piedmont	1		1