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Derivatives and Hedging (Offsetting Assets) (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | $ 539 | $ 434
Derivative assets, current | $ 160 | $ 238
Derivative assets, current, location | Current Assets: Other | Current Assets: Other
Derivative assets, noncurrent | $ 336 | $ 130
Derivative assets, noncurrent, location | Other | Other
Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | $ 180 | $ 267
Offset | (20) | (29)
Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 359 | 167
Offset | (23) | (37)
Duke Energy Carolinas |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 110 | 94
Derivative assets, current | 27 | 24
Derivative assets, noncurrent | 61 | 36
Duke Energy Carolinas | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 37 | 39
Offset | (10) | (15)
Duke Energy Carolinas | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 73 | 55
Offset | (12) | (19)
Progress Energy |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 102 | 127
Derivative assets, current | 26 | 58
Derivative assets, noncurrent | 54 | 38
Progress Energy | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 36 | 72
Offset | (10) | (14)
Progress Energy | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 66 | 55
Offset | (12) | (17)
Duke Energy Progress |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 91 | 109
Derivative assets, current | 23 | 47
Derivative assets, noncurrent | 46 | 31
Duke Energy Progress | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 33 | 61
Offset | (10) | (14)
Duke Energy Progress | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 58 | 48
Offset | (12) | (17)
Duke Energy Florida |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 10 | 18
Derivative assets, current | 3 | 11
Derivative assets, noncurrent | 7 | 7
Duke Energy Florida | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 3 | 11
Offset | 0 | 0
Duke Energy Florida | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 7 | 7
Offset | 0 | 0
Duke Energy Ohio |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 1 | 1
Derivative assets, current | 1 | 1
Derivative assets, noncurrent | 0 | 0
Duke Energy Ohio | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 1 | 1
Offset | 0 | 0
Duke Energy Ohio | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 0 | 0
Offset | 0 | 0
Duke Energy Indiana |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 21 | 44
Derivative assets, current | 21 | 44
Derivative assets, noncurrent | 0 | 0
Duke Energy Indiana | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 21 | 44
Offset | 0 | 0
Duke Energy Indiana | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 0 | 0
Offset | 0 | 0
Piedmont |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 0 | 1
Derivative assets, current | 0 | 1
Derivative assets, noncurrent | 0 | 0
Piedmont | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 0 | 1
Offset | 0 | 0
Piedmont | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 0 | 0
Offset | $ 0 | $ 0

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