Organization and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

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, 2024										December 31, 2023
			Duke				Duke		Duke				Duke				Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Duke		Energy		Progress		Energy		Energy
	Energy		Carolinas		Energy		Progress		Florida		Energy		Carolinas		Energy		Progress		Florida
Current Assets
Cash and cash equivalents	$	459	$	5	$	49	$	27	$	4	$	253	$	9	$	59	$	18	$	24
Other	33		6		27		18		9		76		9		67		31		36
Other Noncurrent Assets
Other	17		1		10		4		7		16		1		9		2		7
Total cash, cash equivalents and restricted cash	$	509	$	12	$	86	$	49	$	20	$	345	$	19	$	135	$	51	$	67

Schedule of Utility Inventory

The components of inventory are presented in the tables below.

	March 31, 2024
			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	$	3,130	$	1,078	$	1,547	$	1,039	$	508	$	146	$	316	$	12
Coal	840		357		240		150		90		27		216		—
Natural gas, oil and other fuel	311		43		200		105		95		12		2		53
Total inventory	$	4,281	$	1,478	$	1,987	$	1,294	$	693	$	185	$	534	$	65

	December 31, 2023
			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	$	3,086	$	1,075	$	1,465	$	963	$	502	$	139	$	361	$	12
Coal	842		364		231		154		77		28		219		—
Natural gas, oil and other fuel	364		45		205		110		95		12		2		100
Total inventory	$	4,292	$	1,484	$	1,901	$	1,227	$	674	$	179	$	582	$	112

Schedule of Accounts Payable Finance Programs

The following table represents the changes in confirmed obligations outstanding for the three months ended March 31, 2024, and 2023.

	Three Months Ended March 31, 2023 and 2024
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Confirmed obligations outstanding at December 31, 2022	$	87	$	6	$	19	$	8	$	11	$	5	$	—	$	57
Invoices confirmed during the period	59		10		22		11		11		1		—		25
Confirmed invoices paid during the period	(94)		(9)		(26)		(13)		(13)		(6)		—		(53)
Confirmed obligations outstanding at March 31, 2023	$	52	$	7	$	15	$	6	$	9	$	—	$	—	$	29
Confirmed obligations outstanding at December 31, 2023	$	50	$	—	$	3	$	—	$	3	$	—	$	—	$	47
Invoices confirmed during the period	57		—		1		—		1		—		—		56
Confirmed invoices paid during the period	(31)		—		(2)		—		(2)		—		—		(29)
Confirmed obligations outstanding at March 31, 2024	$	76	$	—	$	2	$	—	$	2	$	—	$	—	$	74