Debt and Credit Facilities (Summary of Debt and Related Terms) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.09%	3.50%
Unsecured Debt	$ 29,585	$ 24,564
Secured Debt	5,632	5,584
First mortgage bonds	32,645	31,026
Finance leases	764	915
Tax exempt bonds	1,331	360
Notes payable and commercial paper	4,582	3,929
Fair value hedge carrying value adjustment	(5)	4
Unamortized debt discount and premium, net	1,016	1,119
Unamortized debt issuance costs	(383)	(362)
Total debt	75,167	67,139
Short-term notes payable and commercial paper	(3,952)	(3,304)
Current maturities of long-term debt	(4,154)	(3,387)
Total long-term debt	67,061	60,448
Short term obligations classified as long-term debt	$ 937	$ 937
Unsecured Debt
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.20%	3.71%
Secured Debt
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.11%	2.50%
First Mortgage Bonds
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	3.89%	3.87%
Finance Leases
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	7.90%	5.81%
Tax Exempt Bonds
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	3.84%	0.65%
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)	4.50%	0.35%
Short term obligations classified as long-term debt	$ 625	$ 625
Weighted average days to maturity (in days)	15 days	15 days
Parent Company | Purchase Accounting Adjustments
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 27	$ 29
Duke Energy Carolinas
Debt Instrument [Line Items]
Unsecured Debt	1,150	1,150
Secured Debt	1,317	1,094
First mortgage bonds	11,306	10,507
Finance leases	284	289
Money pool/intercompany borrowings	1,533	526
Fair value hedge carrying value adjustment		4
Unamortized debt discount and premium, net	(21)	(21)
Unamortized debt issuance costs	(70)	(67)
Total debt	15,499	13,482
Short-term money pool/intercompany borrowings	(1,233)	(226)
Current maturities of long-term debt	(1,018)	(362)
Total long-term debt	13,248	12,894
Short term obligations classified as long-term debt	300	300
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	2,600	2,250
Secured Debt	2,383	2,397
First mortgage bonds	16,350	15,450
Finance leases	628	690
Tax exempt bonds	500	48
Money pool/intercompany borrowings	993	2,959
Unamortized debt discount and premium, net	(40)	(34)
Unamortized debt issuance costs	(132)	(128)
Total debt	23,282	23,632
Short-term money pool/intercompany borrowings	(843)	(2,809)
Current maturities of long-term debt	(697)	(1,082)
Total long-term debt	21,742	19,741
Duke Energy Progress
Debt Instrument [Line Items]
Secured Debt	1,155	1,120
First mortgage bonds	8,776	8,375
Finance leases	587	629
Tax exempt bonds	500	48
Money pool/intercompany borrowings	389	322
Unamortized debt discount and premium, net	(23)	(19)
Unamortized debt issuance costs	(59)	(54)
Total debt	11,325	10,421
Short-term money pool/intercompany borrowings	(238)	(172)
Current maturities of long-term debt	(369)	(556)
Total long-term debt	10,718	9,693
Short term obligations classified as long-term debt	150	150
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	950	150
Secured Debt	1,228	1,278
First mortgage bonds	7,576	7,075
Finance leases	41	61
Money pool/intercompany borrowings	605	199
Unamortized debt discount and premium, net	(16)	(14)
Unamortized debt issuance costs	(70)	(68)
Total debt	10,314	8,681
Short-term money pool/intercompany borrowings	(605)	(199)
Current maturities of long-term debt	(328)	(76)
Total long-term debt	9,381	8,406
Duke Energy Florida | Purchase Accounting Adjustments
Debt Instrument [Line Items]
Finance leases	164	256
Duke Energy Ohio
Debt Instrument [Line Items]
Unsecured Debt	1,330	1,330
First mortgage bonds	1,850	1,850
Tax exempt bonds	77	27
Money pool/intercompany borrowings	522	128
Unamortized debt discount and premium, net	(25)	(27)
Unamortized debt issuance costs	(12)	(13)
Total debt	3,742	3,295
Short-term money pool/intercompany borrowings	(497)	(103)
Current maturities of long-term debt	(475)
Total long-term debt	2,770	3,192
Short term obligations classified as long-term debt	52	52
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	697	700
First mortgage bonds	3,138	3,219
Finance leases	9	10
Tax exempt bonds	352	285
Money pool/intercompany borrowings	585	150
Unamortized debt discount and premium, net	(17)	(18)
Unamortized debt issuance costs	(22)	(23)
Total debt	4,742	4,323
Short-term money pool/intercompany borrowings	(435)
Current maturities of long-term debt	(303)	(84)
Total long-term debt	4,004	4,239
Short term obligations classified as long-term debt	435	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	3,390	2,990
Money pool/intercompany borrowings	514	518
Unamortized debt discount and premium, net	(9)	(6)
Unamortized debt issuance costs	(18)	(16)
Total debt	3,877	3,486
Short-term money pool/intercompany borrowings	(514)	(518)
Current maturities of long-term debt	(45)	0
Total long-term debt	3,318	2,968
Progress Energy | Purchase Accounting Adjustments
Debt Instrument [Line Items]
Unamortized debt discount and premium, net	1,057	1,121
Piedmont | Purchase Accounting Adjustments
Debt Instrument [Line Items]
Unamortized debt discount and premium, net	$ 85	$ 100