Debt and Credit Facilities (Summary of Debt and Related Terms) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.35%	4.07%
Unsecured Debt	$ 30,435	$ 29,585
Secured Debt	4,202	4,116
First mortgage bonds	37,443	32,645
Finance leases	639	764
Tax exempt bonds	1,331	1,331
Notes payable and commercial paper	4,925	4,582
Fair value hedge carrying value adjustment	32	(5)
Unamortized debt discount and premium, net	916	1,016
Unamortized debt issuance costs	(383)	(331)
Total debt	79,540	73,703
Short-term notes payable and commercial paper	(4,288)	(3,952)
Current maturities of long-term debt	(2,800)	(3,878)
Total long-term debt	72,452	65,873
Short term obligations classified as long-term debt	$ 937	$ 937
Unsecured Debt
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.36%	4.20%
Secured Debt
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.23%	3.70%
First Mortgage Bonds
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.18%	3.89%
Finance Leases
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)
Tax-exempt bonds
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	3.89%	3.84%
Short term obligations classified as long-term debt	$ 312	$ 312
Notes Payable And Commercial Paper
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	5.58%	4.50%
Short term obligations classified as long-term debt	$ 625	$ 625
Weighted average days to maturity (in days)	23 days	15 days
Purchase Accounting Adjustments | Parent Company
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 25	$ 27
Purchase Accounting Adjustments | Progress Energy
Debt Instrument [Line Items]
Unamortized debt discount and premium, net	992	1,057
Purchase Accounting Adjustments | Piedmont
Debt Instrument [Line Items]
Unamortized debt discount and premium, net	69	85
Duke Energy Carolinas
Debt Instrument [Line Items]
Unsecured Debt	1,150	1,150
Secured Debt	1,441	1,317
First mortgage bonds	12,955	11,306
Finance leases	277	284
Unamortized debt discount and premium, net	(29)	(21)
Unamortized debt issuance costs	(82)	(70)
Total debt	16,680	15,499
Current maturities of long-term debt	(19)	(1,018)
Total long-term debt	15,993	13,248
Short term obligations classified as long-term debt	300	300
Duke Energy Carolinas | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	968	1,533
Short-term money pool/intercompany borrowings	668	1,233
Duke Energy Carolinas | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt		0
Progress Energy
Debt Instrument [Line Items]
Unsecured Debt	1,800	2,600
Secured Debt	2,379	2,383
First mortgage bonds	18,550	16,350
Finance leases	571	628
Tax exempt bonds	500	500
Unamortized debt discount and premium, net	(46)	(40)
Unamortized debt issuance costs	(145)	(132)
Total debt	24,802	23,282
Current maturities of long-term debt	(661)	(697)
Total long-term debt	23,098	21,742
Progress Energy | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	1,193	993
Short-term money pool/intercompany borrowings	1,043	843
Duke Energy Progress
Debt Instrument [Line Items]
Secured Debt	1,121	1,155
First mortgage bonds	9,475	8,776
Finance leases	552	587
Tax exempt bonds	500	500
Unamortized debt discount and premium, net	(24)	(23)
Unamortized debt issuance costs	(60)	(59)
Total debt	12,605	11,325
Current maturities of long-term debt	(72)	(369)
Total long-term debt	11,642	10,718
Short term obligations classified as long-term debt	150	150
Duke Energy Progress | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	1,041	389
Short-term money pool/intercompany borrowings	891	238
Duke Energy Progress | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt		0
Duke Energy Florida
Debt Instrument [Line Items]
Unsecured Debt	150	950
Secured Debt	1,258	1,228
First mortgage bonds	9,075	7,576
Finance leases	19	41
Unamortized debt discount and premium, net	(20)	(16)
Unamortized debt issuance costs	(81)	(70)
Total debt	10,553	10,314
Current maturities of long-term debt	(589)	(328)
Total long-term debt	9,812	9,381
Duke Energy Florida | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	152	605
Short-term money pool/intercompany borrowings	152	605
Duke Energy Florida | Purchase Accounting Adjustments
Debt Instrument [Line Items]
Finance leases	63	164
Duke Energy Ohio
Debt Instrument [Line Items]
Unsecured Debt	1,155	1,330
First mortgage bonds	2,300	1,850
Tax exempt bonds	77	77
Unamortized debt discount and premium, net	(24)	(25)
Unamortized debt issuance costs	(15)	(12)
Total debt	4,131	3,742
Current maturities of long-term debt		(475)
Total long-term debt	3,518	2,770
Short term obligations classified as long-term debt	52	52
Duke Energy Ohio | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	638	522
Short-term money pool/intercompany borrowings	613	497
Duke Energy Ohio | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	27	27
Duke Energy Indiana
Debt Instrument [Line Items]
Unsecured Debt	393	697
First mortgage bonds	3,638	3,138
Finance leases	9	9
Tax exempt bonds	352	352
Unamortized debt discount and premium, net	(16)	(17)
Unamortized debt issuance costs	(25)	(22)
Total debt	4,758	4,742
Current maturities of long-term debt	(4)	(303)
Total long-term debt	4,498	4,004
Short term obligations classified as long-term debt	435	435
Duke Energy Indiana | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	407	585
Short-term money pool/intercompany borrowings	256	435
Duke Energy Indiana | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	285	285
Piedmont
Debt Instrument [Line Items]
Unsecured Debt	3,695	3,390
Unamortized debt discount and premium, net	(8)	(9)
Unamortized debt issuance costs	(19)	(18)
Total debt	4,206	3,877
Current maturities of long-term debt	(40)	(45)
Total long-term debt	3,628	3,318
Piedmont | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	538	514
Short-term money pool/intercompany borrowings	$ 538	$ 514