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Debt and Credit Facilities (Narrative) (Details) - USD ($)		1 Months Ended				2 Months Ended
	Nov. 07, 2024	Apr. 30, 2025	Jan. 31, 2024	Dec. 31, 2022	Mar. 31, 2022	Feb. 28, 2025	Dec. 31, 2024	Mar. 31, 2025	Mar. 30, 2025	Mar. 30, 2022
Master Credit Facility
Debt Instrument [Line Items]
Facility size								$ 10,000,000,000	$ 9,000,000,000
June 2017 Three Year Revolving Credit Facility
Debt Instrument [Line Items]
Facility term (in years)					3 years
Duke Energy Florida | Master Credit Facility
Debt Instrument [Line Items]
Facility size								1,425,000,000
Duke Energy Progress | Master Credit Facility
Debt Instrument [Line Items]
Facility size								1,675,000,000
Duke Energy Carolinas | Master Credit Facility
Debt Instrument [Line Items]
Facility size								1,300,000,000
Term Loan Facility | Duke Energy Term Loan Facility
Debt Instrument [Line Items]
Facility term (in years)	2 years
Term Loan Facility | Duke Energy (Parent) | Master Credit Facility
Debt Instrument [Line Items]
Facility size					$ 1,400,000,000					$ 1,000,000,000
Repayments of debt			$ 1,000,000,000	$ 400,000,000
Term Loan Facility | Duke Energy Florida | Duke Energy Term Loan Facility
Debt Instrument [Line Items]
Facility size	$ 800,000,000							800,000,000
Facility term (in years)	364 days
Extension period (in years)	4 months
Borrowing amount						$ 700,000,000	$ 100,000,000
Increase in term loan facility	$ 400,000,000
Term Loan Facility | Duke Energy Progress | Duke Energy Term Loan Facility
Debt Instrument [Line Items]
Facility size	$ 250,000,000							250,000,000
Extension period (in years)	6 months
Borrowing amount						65,000,000	185,000,000
Increase in term loan facility	$ 150,000,000
Term Loan Facility | Duke Energy Carolinas | Duke Energy Term Loan Facility
Debt Instrument [Line Items]
Facility size	$ 700,000,000							$ 600,000,000
Extension period (in years)	6 months
Borrowing amount						$ 145,000,000	$ 455,000,000
Increase in term loan facility	$ 300,000,000
Term Loan Facility | Duke Energy Carolinas | Duke Energy Term Loan Facility | Subsequent event
Debt Instrument [Line Items]
Borrowing amount		$ 100,000,000

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