Debt and Credit Facilities (Narrative) (Details)				1 Months Ended
	Jun. 30, 2023 day	Apr. 03, 2023	Mar. 09, 2022 USD ($)	Apr. 30, 2023 USD ($) $ / shares	Sep. 30, 2023 USD ($) $ / shares	Mar. 31, 2023 USD ($)	Dec. 31, 2022 $ / shares
Debt Instrument [Line Items]
Sale of debt					$ 8,525,000,000
Common stock, par value (in usd per share) | $ / shares					$ 0.001		$ 0.001
Master Credit Facility
Debt Instrument [Line Items]
Facility size					$ 9,000,000,000	$ 9,000,000,000
June 2017 Three Year Revolving Credit Facility
Debt Instrument [Line Items]
Facility term (in years)			3 years
4.25% Convertible Senior notes Due April 2026
Debt Instrument [Line Items]
Interest rate (as a percent)				4.125%
Duke Energy (Parent)
Debt Instrument [Line Items]
Sale of debt					$ 3,075,000,000
Duke Energy (Parent) | 4.25% Convertible Senior notes Due April 2026
Debt Instrument [Line Items]
Sale of debt				$ 1,700,000,000
Debt conversion rate (as a percent)		25.00%
Common stock, par value (in usd per share) | $ / shares				$ 0.001
Conversion ratio				0.0084131
Convertible Debt | 4.25% Convertible Senior notes Due April 2026 | Debt Conversion Terms One
Debt Instrument [Line Items]
Trading days (in days) | day	20
Consecutive trading days (in days) | day	30
Debt conversion rate (as a percent)	130.00%
Convertible Debt | 4.25% Convertible Senior notes Due April 2026 | Debt Conversion Terms Two
Debt Instrument [Line Items]
Trading days (in days) | day	5
Consecutive trading days (in days) | day	10
Debt conversion rate (as a percent)	98.00%
Term Loan Facility | Duke Energy (Parent) | Master Credit Facility
Debt Instrument [Line Items]
Facility size			$ 1,400,000,000
Extension period (in years)			2 years