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Debt and Credit Facilities (Summary of Debt and Related Terms) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.37%	4.35%
Unsecured Debt	$ 34,283	$ 30,435
Secured Debt	3,672	4,202
First mortgage bonds	39,842	37,443
Finance leases	570	639
Tax exempt bonds	1,331	1,331
Notes payable and commercial paper	4,213	4,925
Fair value hedge carrying value adjustment	(82)	32
Unamortized debt discount and premium, net	845	916
Unamortized debt issuance costs	(401)	(383)
Total debt	84,273	79,540
Short-term notes payable and commercial paper	(3,584)	(4,288)
Current maturities of long-term debt	(4,349)	(2,800)
Total long-term debt	76,340	72,452
Short term obligations classified as long-term debt	$ 937	$ 937
Unsecured Debt
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.53%	4.36%
Secured Debt
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	3.75%	4.23%
First Mortgage Bonds
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.24%	4.18%
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)	3.85%	3.89%
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)	4.67%	5.58%
Short term obligations classified as long-term debt	$ 625	$ 625
Weighted average days to maturity (in days)	13 days	23 days
Purchase Accounting Adjustments | Parent Company
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 23	$ 25
Purchase Accounting Adjustments | Progress Energy
Debt Instrument [Line Items]
Unamortized debt discount and premium, net	925	992
Purchase Accounting Adjustments | Piedmont
Debt Instrument [Line Items]
Unamortized debt discount and premium, net	56	69
Duke Energy Carolinas
Debt Instrument [Line Items]
Unsecured Debt	1,605	1,150
Secured Debt	1,463	1,441
First mortgage bonds	13,955	12,955
Finance leases	270	277
Unamortized debt discount and premium, net	(20)	(29)
Unamortized debt issuance costs	(83)	(82)
Total debt	17,490	16,680
Current maturities of long-term debt	(521)	(19)
Total long-term debt	16,969	15,993
Short term obligations classified as long-term debt	300	300
Duke Energy Carolinas | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	300	968
Short-term money pool/intercompany borrowings		668
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	2,085	1,800
Secured Debt	2,147	2,379
First mortgage bonds	19,223	18,550
Finance leases	581	571
Tax exempt bonds	500	500
Unamortized debt discount and premium, net	(44)	(46)
Unamortized debt issuance costs	(146)	(145)
Total debt	25,573	24,802
Current maturities of long-term debt	(1,517)	(661)
Total long-term debt	22,979	23,098
Progress Energy | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	1,227	1,193
Short-term money pool/intercompany borrowings	1,077	1,043
Duke Energy Progress
Debt Instrument [Line Items]
Unsecured Debt	185
Secured Debt	1,269	1,121
First mortgage bonds	9,974	9,475
Finance leases	515	552
Tax exempt bonds	500	500
Unamortized debt discount and premium, net	(24)	(24)
Unamortized debt issuance costs	(65)	(60)
Total debt	13,115	12,605
Current maturities of long-term debt	(983)	(72)
Total long-term debt	11,521	11,642
Short term obligations classified as long-term debt	150	150
Duke Energy Progress | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	761	1,041
Short-term money pool/intercompany borrowings	611	891
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	250	150
Secured Debt	879	1,258
First mortgage bonds	9,247	9,075
Finance leases	66	19
Unamortized debt discount and premium, net	(19)	(20)
Unamortized debt issuance costs	(76)	(81)
Total debt	10,814	10,553
Current maturities of long-term debt	(534)	(589)
Total long-term debt	9,814	9,812
Duke Energy Florida | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	467	152
Short-term money pool/intercompany borrowings	466	152
Duke Energy Florida | Purchase Accounting Adjustments
Debt Instrument [Line Items]
Finance leases		63
Duke Energy Ohio
Debt Instrument [Line Items]
Unsecured Debt	1,380	1,155
First mortgage bonds	2,722	2,300
Tax exempt bonds	77	77
Unamortized debt discount and premium, net	(23)	(24)
Unamortized debt issuance costs	(18)	(15)
Total debt	4,327	4,131
Current maturities of long-term debt	(245)	0
Total long-term debt	3,920	3,518
Short term obligations classified as long-term debt	52	52
Duke Energy Ohio | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	189	638
Short-term money pool/intercompany borrowings	162	613
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	390	393
First mortgage bonds	3,937	3,638
Finance leases	10	9
Tax exempt bonds	352	352
Unamortized debt discount and premium, net	(16)	(16)
Unamortized debt issuance costs	(25)	(25)
Total debt	4,808	4,758
Current maturities of long-term debt	(4)	(4)
Total long-term debt	4,794	4,498
Short term obligations classified as long-term debt	435	435
Duke Energy Indiana | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	160	407
Short-term money pool/intercompany borrowings	10	256
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	4,030	3,695
Unamortized debt discount and premium, net	(8)	(8)
Unamortized debt issuance costs	(19)	(19)
Total debt	4,742	4,206
Current maturities of long-term debt	(205)	(40)
Total long-term debt	3,798	3,628
Piedmont | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	739	538
Short-term money pool/intercompany borrowings	$ 739	$ 538

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