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v3.25.3

Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 6,452 | $ 4,349
Other debt securities |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | 259 |
Duke Energy Florida |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 787 | 534
Duke Energy Florida | Debt Maturing October 2025 | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate | 4.916% |
Current maturities of long-term debt | $ 350 |
Duke Energy Florida | Debt Maturing October 2073 and April 2074 | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Facility term | 12 months |
Duke Energy Florida | Debt Maturing October 2073 | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest rate | 3.992% |
Current maturities of long-term debt | $ 200 |
Duke Energy Florida | Debt Maturing April 2074 | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest rate | 3.992% |
Current maturities of long-term debt | $ 173 |
Duke Energy Ohio |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 140 | 245
Duke Energy Ohio | Debt Maturing October 2025 | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate | 3.23% |
Current maturities of long-term debt | $ 95 |
Duke Energy (Parent) | Debt Maturing December 2025 | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.00% |
Current maturities of long-term debt | $ 500 |
Duke Energy (Parent) | Debt Maturing April 2026 | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate | 4.125% |
Current maturities of long-term debt | $ 1,725 |
Duke Energy (Parent) | Debt Maturing September 2026 | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate | 2.65% |
Current maturities of long-term debt | $ 1,500 |
Duke Energy (Parent) | Debt Maturing September 2026 | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.124% |
Current maturities of long-term debt | $ 1,200 |
Piedmont |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 505 | $ 205
Piedmont | Debt Maturing August 2026 | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.025% |
Current maturities of long-term debt | $ 450 |

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