Organization and Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2023

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.

	September 30, 2023										December 31, 2022
			Duke				Duke		Duke				Duke				Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Duke		Energy		Progress		Energy		Energy
	Energy		Carolinas		Energy		Progress		Florida		Energy(a)		Carolinas		Energy		Progress		Florida
Current Assets
Cash and cash equivalents	$	324	$	19	$	87	$	27	$	41	$	409	$	44	$	108	$	49	$	45
Other	49		4		44		17		23		82		8		74		28		41
Other Noncurrent Assets
Other	9		1		2		2		—		11		1		2		2		—
Total cash, cash equivalents and restricted cash	$	382	$	24	$	133	$	46	$	64	$	502	$	53	$	184	$	79	$	86

(a)    Certain prior year balances have been adjusted for held for sale presentation. See Note 2 for additional information.

Schedule of Utility Inventory

The components of inventory are presented in the tables below.

	September 30, 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	$	3,018	$	1,045	$	1,408	$	920	$	488	$	132	$	381	$	15
Coal	758		330		187		110		77		24		217		—
Natural gas, oil and other fuel	342		47		208		111		97		12		2		73
Total inventory	$	4,118	$	1,422	$	1,803	$	1,141	$	662	$	168	$	600	$	88

	December 31, 2022
			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	$	2,604	$	876	$	1,232	$	819	$	413	$	105	$	342	$	12
Coal	620		253		190		99		91		34		144		—
Natural gas, oil and other fuel	360		35		157		88		69		5		3		160
Total inventory	$	3,584	$	1,164	$	1,579	$	1,006	$	573	$	144	$	489	$	172

Schedule of Accounts Payable Finance Programs

The following table represents the changes in confirmed obligations outstanding for the three and nine months ended September 30, 2023, and 2022.

	Three months ended September 30, 2022 and 2023
			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 the June 30, 2022	$	46	$	9	$	11	$	3	$	8	$	9	$	—	$	17
Invoices confirmed during the period	86		6		21		7		14		12		—		47
Confirmed invoices paid during the period	(58)		(12)		(15)		(5)		(10)		(9)		—		(22)
Confirmed obligations outstanding at September 30, 2022	$	74	$	3	$	17	$	5	$	12	$	12	$	—	$	42
Confirmed obligations outstanding at the June 30, 2023	$	40	$	5	$	14	$	12	$	2	$	2	$	—	$	19
Invoices confirmed during the period	47		2		11		2		9		4		—		30
Confirmed invoices paid during the period	(18)		(4)		(8)		(3)		(5)		—		—		(6)
Confirmed obligations outstanding at September 30, 2023	$	69	$	3	$	17	$	11	$	6	$	6	$	—	$	43
	Nine months ended September 30, 2022 and 2023
			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 the December 31, 2021	$	19	$	—	$	9	$	—	$	9	$	6	$	—	$	4
Invoices confirmed during the period	181		20		52		17		35		27		1		81
Confirmed invoices paid during the period	(126)		(17)		(44)		(12)		(32)		(21)		(1)		(43)
Confirmed obligations outstanding at September 30, 2022	$	74	$	3	$	17	$	5	$	12	$	12	$	—	$	42
Confirmed obligations outstanding at the December 31, 2022	$	87	$	6	$	19	$	8	$	11	$	5	$	—	$	57
Invoices confirmed during the period	161		22		53		25		28		7		—		79
Confirmed invoices paid during the period	(179)		(25)		(55)		(22)		(33)		(6)		—		(93)
Confirmed obligations outstanding at September 30, 2023	$	69	$	3	$	17	$	11	$	6	$	6	$	—	$	43