Organization and Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Cash Received and Allocated Losses from Subsidiaries, Noncontrolling Interest

The following table presents cash received for the sale of noncontrolling interest to tax equity members and allocated losses to noncontrolling tax equity members utilizing the HLBV method for the three and six months ended June 30, 2020, and 2019.

	Three Months Ended				Six Months Ended
(in millions)	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Cash received for the sale of noncontrolling interest to tax equity members	$	60	$	187	$	163	$	193
Allocated losses to noncontrolling tax equity members utilizing the HLBV method	79		83		128		90

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.

	June 30, 2020						December 31, 2019
					Duke						Duke
	Duke		Progress		Energy		Duke		Progress		Energy
	Energy		Energy		Florida		Energy		Energy		Florida
Current Assets
Cash and cash equivalents	$	341	$	78	$	20	$	311	$	48	$	17
Other	193		31		31		222		39		39
Other Noncurrent Assets
Other	107		102		—		40		39		—
Total cash, cash equivalents and restricted cash	$	641	$	211	$	51	$	573	$	126	$	56

Schedule of Utility Inventory

The components of inventory are presented in the tables below.

	June 30, 2020
			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	$	2,220	$	769	$	1,014	$	682	$	333	$	83	$	254	$	5
Coal	776		271		257		189		68		13		234		—
Natural gas, oil and other fuel	293		40		195		109		85		33		1		24
Total inventory	$	3,289	$	1,080	$	1,466	$	980	$	486	$	129	$	489	$	29

	December 31, 2019
			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	$	2,297	$	768	$	1,038	$	686	$	351	$	79	$	318	$	5
Coal	586		187		186		138		48		15		198		—
Natural gas, oil and other fuel	349		41		199		110		90		41		1		67
Total inventory	$	3,232	$	996	$	1,423	$	934	$	489	$	135	$	517	$	72

Schedule of New Accounting Pronouncements

Duke Energy recorded an adjustment for the cumulative effect of a change in accounting principle due to the adoption of this standard on January 1, 2020, as shown in the table below:

	January 1, 2020
			Duke				Duke		Duke
	Duke		Energy		Progress		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Piedmont
Total pretax impact to Retained Earnings	$	120	$	16	$	2	$	1	$	1	$	1