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Debt and Credit Facilities (Annual Maturities) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2024 | $ 2,800 |
2025 | 4,177 |
2026 | 4,280 |
2027 | 2,472 |
2028 | 4,593 |
Thereafter | 56,375 |
Total long-term debt, including current maturities | 74,697 |
Unamortized debt discount and premium, net | (1,000) | $ (1,200)
Purchase Accounting Adjustments |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
Unamortized debt discount and premium, net | 1,086 |
Duke Energy Carolinas |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2024 | 19 |
2025 | 521 |
2026 | 623 |
2027 | 25 |
2028 | 1,276 |
Thereafter | 13,659 |
Total long-term debt, including current maturities | 16,123 |
Progress Energy |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2024 | 664 |
2025 | 1,040 |
2026 | 345 |
2027 | 797 |
2028 | 1,551 |
Thereafter | 19,543 |
Total long-term debt, including current maturities | 23,940 |
Duke Energy Progress |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2024 | 72 |
2025 | 975 |
2026 | 279 |
2027 | 83 |
2028 | 737 |
Thereafter | 9,652 |
Total long-term debt, including current maturities | 11,798 |
Duke Energy Florida |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2024 | 592 |
2025 | 65 |
2026 | 66 |
2027 | 714 |
2028 | 815 |
Thereafter | 8,239 |
Total long-term debt, including current maturities | 10,491 |
Duke Energy Ohio |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2025 | 245 |
2026 | 45 |
2027 | 77 |
2028 | 65 |
Thereafter | 3,125 |
Total long-term debt, including current maturities | 3,557 |
Duke Energy Indiana |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2024 | 4 |
2025 | 4 |
2026 | 4 |
2027 | 27 |
2028 | 157 |
Thereafter | 4,347 |
Total long-term debt, including current maturities | 4,543 |
Piedmont |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2024 | 40 |
2025 | 205 |
2026 | 40 |
2027 | 300 |
Thereafter | 3,110 |
Total long-term debt, including current maturities | $ 3,695 |

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