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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, 2024 | Dec. 31, 2023
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 2,274 | $ 2,800
Other debt securities |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 249 |
Duke Energy (Parent) | Debt Maturing April 2024, 3.75% Coupon | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate (as a percent) | 3.75% |
Current maturities of long-term debt | $ 1,000 |
Duke Energy Florida |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 586 | 589
Duke Energy Florida | 6.395% Notes Due April 2024 | Secured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate (as a percent) | 6.395% |
Current maturities of long-term debt | $ 163 |
Duke Energy Florida | 6.226% Notes Due April 2024 | Secured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate (as a percent) | 6.226% |
Current maturities of long-term debt | $ 162 |
Duke Energy Florida | 4.922% Notes Due October 2073 | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest rate (as a percent) | 4.922% |
Current maturities of long-term debt | $ 200 |
Facility term (in years) | 12 months |
Duke Energy Carolinas |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 520 | $ 19
Duke Energy Carolinas | 6.176% Notes Due January 2025 | Secured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate (as a percent) | 6.176% |
Current maturities of long-term debt | $ 500 |

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