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Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 4,180	$ 4,349
Other debt securities
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 292
Duke Energy (Parent) | Debt Maturing April 2025, 3.364% Coupon | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	3.364%
Current maturities of long-term debt	$ 420
Duke Energy (Parent) | Debt Maturing April 2025, 3.950% Coupon | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	3.95%
Current maturities of long-term debt	$ 250
Duke Energy (Parent) | Debt Maturing September 2025, 0.900% Coupon | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	0.90%
Current maturities of long-term debt	$ 650
Duke Energy (Parent) | Debt Maturing December 2025, 5.000% Coupon | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	5.00%
Current maturities of long-term debt	$ 500
Duke Energy Ohio
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 290	245
Duke Energy Ohio | Debt Maturing June 2025, 6.900% Coupon | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	6.90%
Current maturities of long-term debt	$ 150
Duke Energy Ohio | Debt Maturing October 2025, 3.230% Coupon | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	3.23%
Current maturities of long-term debt	$ 95
Piedmont
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 205	205
Piedmont | Debt Maturing September 2025, 3.600% Coupon | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	3.60%
Current maturities of long-term debt	$ 150
Duke Energy Carolinas
Debt Instrument [Line Items]
Current maturities of long-term debt	23	521
Duke Energy Progress
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 581	983
Duke Energy Progress | 3.250% Notes Due August 2025 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	3.25%
Current maturities of long-term debt	$ 500
Duke Energy Florida
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 1,235	$ 534
Duke Energy Florida | Debt Maturing October 2025, 5.303% Coupon | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	5.068%
Current maturities of long-term debt	$ 800
Duke Energy Florida | 4.998% Notes Due October 2073 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	4.282%
Current maturities of long-term debt	$ 200
Duke Energy Florida | 4.970% Notes Due April 2074 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	4.282%
Current maturities of long-term debt	$ 173
Duke Energy Florida | 4.998% Notes Due October 2073 And 4.970% Notes Due April 2074 | First Mortgage Bonds
Debt Instrument [Line Items]
Facility term (in years)	12 months

X

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