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Debt and Credit Facilities (Summary of Debt and Related Terms) (Details) - USD ($)	1 Months Ended					12 Months Ended
	Dec. 31, 2025	Oct. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.41%					4.41%	4.37%
Unsecured Debt	$ 35,585,000,000					$ 35,585,000,000	$ 34,283,000,000
Secured Debt	4,279,000,000					4,279,000,000	3,672,000,000
First mortgage bonds	44,289,000,000					44,289,000,000	39,842,000,000
Finance leases	576,000,000					576,000,000	570,000,000
Tax exempt bonds	1,331,000,000					1,331,000,000	1,331,000,000
Notes payable and commercial paper	3,254,000,000					3,254,000,000	4,213,000,000
Fair value hedge carrying value adjustment	176,000,000					176,000,000	(82,000,000)
Unamortized debt discount and premium, net	762,000,000					762,000,000	845,000,000
Unamortized debt issuance costs	(416,000,000)					(416,000,000)	(401,000,000)
Total debt	89,836,000,000					89,836,000,000	84,273,000,000
Short-term notes payable and commercial paper	(2,624,000,000)					(2,624,000,000)	(3,584,000,000)
Current maturities of long-term debt	(7,104,000,000)					(7,104,000,000)	(4,349,000,000)
Total long-term debt	80,108,000,000					80,108,000,000	76,340,000,000
Short term obligations classified as long-term debt	937,000,000					937,000,000	937,000,000
Repayments of debt	500,000,000	$ 95,000,000	$ 650,000,000	$ 150,000,000
Face amount of debt instrument issued	$ 7,005,000,000					$ 7,005,000,000	$ 7,740,000,000
Unsecured Debt
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.63%					4.63%	4.53%
Secured Debt
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	3.85%					3.85%	3.75%
First Mortgage Bonds
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.33%					4.33%	4.24%
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)	3.54%					3.54%	3.85%
Short term obligations classified as long-term debt	$ 312,000,000					$ 312,000,000	$ 312,000,000
Notes Payable And Commercial Paper
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	3.95%					3.95%	4.67%
Short term obligations classified as long-term debt	$ 625,000,000					$ 625,000,000	$ 625,000,000
Weighted average days to maturity (in days)						21 days	13 days
Purchase Accounting Adjustments | Parent Company
Debt Instrument [Line Items]
Unamortized debt issuance costs	21,000,000					$ 21,000,000	$ 23,000,000
Purchase Accounting Adjustments | Progress Energy
Debt Instrument [Line Items]
Unamortized debt discount and premium, net	855,000,000					855,000,000	925,000,000
Purchase Accounting Adjustments | Piedmont
Debt Instrument [Line Items]
Unamortized debt discount and premium, net	45,000,000					45,000,000	56,000,000
Maturities Due March 2024
Debt Instrument [Line Items]
Repayments of debt					$ 1,000,000,000
Duke Energy Carolinas
Debt Instrument [Line Items]
Unsecured Debt	1,150,000,000					1,150,000,000	1,605,000,000
Secured Debt	2,115,000,000					2,115,000,000	1,463,000,000
First mortgage bonds	15,053,000,000					15,053,000,000	13,955,000,000
Finance leases	272,000,000					272,000,000	270,000,000
Unamortized debt discount and premium, net	(20,000,000)					(20,000,000)	(20,000,000)
Unamortized debt issuance costs	(93,000,000)					(93,000,000)	(83,000,000)
Total debt	18,777,000,000					18,777,000,000	17,490,000,000
Current maturities of long-term debt	(629,000,000)					(629,000,000)	(521,000,000)
Total long-term debt	18,148,000,000					18,148,000,000	16,969,000,000
Short term obligations classified as long-term debt	300,000,000					300,000,000	300,000,000
Face amount of debt instrument issued	2,243,000,000					2,243,000,000	1,000,000,000
Duke Energy Carolinas | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	300,000,000					300,000,000	300,000,000
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	1,800,000,000					1,800,000,000	2,085,000,000
Secured Debt	2,109,000,000					2,109,000,000	2,147,000,000
First mortgage bonds	21,923,000,000					21,923,000,000	19,223,000,000
Finance leases	569,000,000					569,000,000	581,000,000
Tax exempt bonds	500,000,000					500,000,000	500,000,000
Unamortized debt discount and premium, net	(44,000,000)					(44,000,000)	(44,000,000)
Unamortized debt issuance costs	(159,000,000)					(159,000,000)	(146,000,000)
Total debt	26,848,000,000					26,848,000,000	25,573,000,000
Current maturities of long-term debt	(722,000,000)					(722,000,000)	(1,517,000,000)
Total long-term debt	26,126,000,000					26,126,000,000	22,979,000,000
Progress Energy | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	150,000,000					150,000,000	1,227,000,000
Short-term money pool/intercompany borrowings							1,077,000,000
Duke Energy Progress
Debt Instrument [Line Items]
Unsecured Debt							185,000,000
Secured Debt	1,290,000,000					1,290,000,000	1,269,000,000
First mortgage bonds	11,576,000,000					11,576,000,000	9,974,000,000
Finance leases	481,000,000					481,000,000	515,000,000
Tax exempt bonds	500,000,000					500,000,000	500,000,000
Unamortized debt discount and premium, net	(25,000,000)					(25,000,000)	(24,000,000)
Unamortized debt issuance costs	(76,000,000)					(76,000,000)	(65,000,000)
Total debt	13,896,000,000					13,896,000,000	13,115,000,000
Current maturities of long-term debt	(285,000,000)					(285,000,000)	(983,000,000)
Total long-term debt	13,611,000,000					13,611,000,000	11,521,000,000
Short term obligations classified as long-term debt	150,000,000					150,000,000	150,000,000
Face amount of debt instrument issued	2,561,000,000					2,561,000,000	677,000,000
Duke Energy Progress | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	150,000,000					150,000,000	761,000,000
Short-term money pool/intercompany borrowings							611,000,000
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	150,000,000					150,000,000	250,000,000
Secured Debt	818,000,000					818,000,000	879,000,000
First mortgage bonds	10,349,000,000					10,349,000,000	9,247,000,000
Finance leases	88,000,000					88,000,000	66,000,000
Unamortized debt discount and premium, net	(19,000,000)					(19,000,000)	(19,000,000)
Unamortized debt issuance costs	(79,000,000)					(79,000,000)	(76,000,000)
Total debt	11,307,000,000					11,307,000,000	10,814,000,000
Current maturities of long-term debt	(437,000,000)					(437,000,000)	(534,000,000)
Total long-term debt	10,870,000,000					10,870,000,000	9,814,000,000
Face amount of debt instrument issued	1,100,000,000					1,100,000,000	173,000,000
Duke Energy Florida | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings							467,000,000
Short-term money pool/intercompany borrowings							466,000,000
Duke Energy Ohio
Debt Instrument [Line Items]
Unsecured Debt	1,285,000,000					1,285,000,000	1,380,000,000
First mortgage bonds	3,075,000,000					3,075,000,000	2,722,000,000
Tax exempt bonds	77,000,000					77,000,000	77,000,000
Unamortized debt discount and premium, net	(22,000,000)					(22,000,000)	(23,000,000)
Unamortized debt issuance costs	(20,000,000)					(20,000,000)	(18,000,000)
Total debt	4,433,000,000					4,433,000,000	4,327,000,000
Current maturities of long-term debt	(45,000,000)					(45,000,000)	(245,000,000)
Total long-term debt	4,375,000,000					4,375,000,000	3,920,000,000
Short term obligations classified as long-term debt	52,000,000					52,000,000	52,000,000
Face amount of debt instrument issued	501,000,000					501,000,000	650,000,000
Duke Energy Ohio | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	38,000,000					38,000,000	189,000,000
Short-term money pool/intercompany borrowings	13,000,000					13,000,000	162,000,000
Duke Energy Ohio | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	27,000,000					27,000,000	27,000,000
Duke Energy Indiana
Debt Instrument [Line Items]
Unsecured Debt	386,000,000					386,000,000	390,000,000
First mortgage bonds	4,238,000,000					4,238,000,000	3,937,000,000
Finance leases	10,000,000					10,000,000	10,000,000
Tax exempt bonds	352,000,000					352,000,000	352,000,000
Unamortized debt discount and premium, net	(16,000,000)					(16,000,000)	(16,000,000)
Unamortized debt issuance costs	(27,000,000)					(27,000,000)	(25,000,000)
Total debt	5,268,000,000					5,268,000,000	4,808,000,000
Current maturities of long-term debt	(4,000,000)					(4,000,000)	(4,000,000)
Total long-term debt	5,089,000,000					5,089,000,000	4,794,000,000
Short term obligations classified as long-term debt	435,000,000					435,000,000	435,000,000
Face amount of debt instrument issued	300,000,000					300,000,000	300,000,000
Duke Energy Indiana | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	325,000,000					325,000,000	160,000,000
Short-term money pool/intercompany borrowings	175,000,000					175,000,000	10,000,000
Duke Energy Indiana | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	285,000,000					285,000,000	285,000,000
Piedmont
Debt Instrument [Line Items]
Unsecured Debt	4,275,000,000					4,275,000,000	4,030,000,000
Unamortized debt discount and premium, net	(7,000,000)					(7,000,000)	(8,000,000)
Unamortized debt issuance costs	(17,000,000)					(17,000,000)	(19,000,000)
Total debt	4,860,000,000					4,860,000,000	4,742,000,000
Current maturities of long-term debt	(490,000,000)					(490,000,000)	(205,000,000)
Total long-term debt	3,761,000,000					3,761,000,000	3,798,000,000
Face amount of debt instrument issued							375,000,000
Piedmont | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	609,000,000					609,000,000	739,000,000
Short-term money pool/intercompany borrowings	$ 609,000,000					$ 609,000,000	$ 739,000,000

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