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Other Income and Expenses, Net (Tables) | 12 Months Ended
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Dec. 31, 2025
Other Income and Expenses [Abstract] |
Schedule of Other Income and Expenses, Net | The components of Other income and expenses, net on the Consolidated Statements of Operations are as follows.
| Year Ended December 31, 2025
|  |  | Duke |  |  |  | Duke |  | Duke |  | Duke |  | Duke |  |
| Duke |  | Energy |  | Progress |  | Energy |  | Energy |  | Energy |  | Energy |  |
(in millions) | Energy |  | Carolinas |  | Energy |  | Progress |  | Florida |  | Ohio |  | Indiana |  | Piedmont
Interest income | $ | 51 |  |  | $ | 17 |  |  | $ | 47 |  |  | $ | 39 |  |  | $ | 9 |  |  | $ | 3 |  |  | $ | 6 |  |  | $ | 19 |
AFUDC equity | 328 |  |  | 144 |  |  | 117 |  |  | 100 |  |  | 17 |  |  | 16 |  |  | 34 |  |  | 17 |
Post-in-service equity returns | 47 |  |  | 26 |  |  | 19 |  |  | 19 |  |  | — |  |  | — |  |  | 2 |  |  | — |
Nonoperating income, other | 243 |  |  | 71 |  |  | 104 |  |  | 38 |  |  | 64 |  |  | 5 |  |  | 19 |  |  | 5 |
Other income and expense, net | $ | 669 |  |  | $ | 258 |  |  | $ | 287 |  |  | $ | 196 |  |  | $ | 90 |  |  | $ | 24 |  |  | $ | 61 |  |  | $ | 41 |
| Year Ended December 31, 2024
|  |  | Duke |  |  |  | Duke |  | Duke |  | Duke |  | Duke |  |
| Duke |  | Energy |  | Progress |  | Energy |  | Energy |  | Energy |  | Energy |  |
(in millions) | Energy |  | Carolinas |  | Energy |  | Progress |  | Florida |  | Ohio |  | Indiana |  | Piedmont
Interest income | $ | 63 |  |  | $ | 9 |  |  | $ | 18 |  |  | $ | 14 |  |  | $ | 4 |  |  | $ | 8 |  |  | $ | 5 |  |  | $ | 19 |
AFUDC equity | 233 |  |  | 113 |  |  | 74 |  |  | 61 |  |  | 13 |  |  | 7 |  |  | 19 |  |  | 21 |
Post-in-service equity returns | 52 |  |  | 31 |  |  | 20 |  |  | 20 |  |  | — |  |  | 1 |  |  | 1 |  |  | — |
Nonoperating income, other | 313 |  |  | 94 |  |  | 123 |  |  | 48 |  |  | 69 |  |  | 3 |  |  | 37 |  |  | 14 |
Other income and expense, net | $ | 661 |  |  | $ | 247 |  |  | $ | 235 |  |  | $ | 143 |  |  | $ | 86 |  |  | $ | 19 |  |  | $ | 62 |  |  | $ | 54 |
| Year Ended December 31, 2023 |  |
|  |  | Duke |  |  |  | Duke |  | Duke |  | Duke |  | Duke |  |
| Duke |  | Energy |  | Progress |  | Energy |  | Energy |  | Energy |  | Energy |  |
(in millions) | Energy |  | Carolinas |  | Energy |  | Progress |  | Florida |  | Ohio |  | Indiana |  | Piedmont
Interest income | $ | 29 |  |  | $ | 10 |  |  | $ | 14 |  |  | $ | 9 |  |  | $ | 7 |  |  | $ | 25 |  |  | $ | 25 |  |  | $ | 19 |
AFUDC equity | 198 |  |  | 91 |  |  | 67 |  |  | 52 |  |  | 15 |  |  | 9 |  |  | 10 |  |  | 21 |
Post-in-service equity returns | 39 |  |  | 19 |  |  | 19 |  |  | 19 |  |  | — |  |  | 1 |  |  | — |  |  | — |
Nonoperating income, other | 332 |  |  | 118 |  |  | 101 |  |  | 44 |  |  | 56 |  |  | 6 |  |  | 41 |  |  | 17 |
Other income and expense, net | $ | 598 |  |  | $ | 238 |  |  | $ | 201 |  |  | $ | 124 |  |  | $ | 78 |  |  | $ | 41 |  |  | $ | 76 |  |  | $ | 57 |

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration