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Derivatives and Hedging (Schedule of Offsetting Assets) (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | $ 322 | $ 795
Derivative Asset, Current | 182 | 518
Net amounts presented in Current Assets: Other | 51 | 116
Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 205 | 582
Gross amounts offset | $ (23) | $ (64)
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] | Current Assets: Other | Current Assets: Other
Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | $ 117 | $ 213
Gross amounts offset | $ (66) | $ (97)
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other | Other
Duke Energy Carolinas |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | $ 62 | $ 330
Derivative Asset, Current | 3 | 193
Net amounts presented in Current Assets: Other | 13 | 64
Duke Energy Carolinas | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 16 | 226
Gross amounts offset | (13) | (33)
Duke Energy Carolinas | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 46 | 104
Gross amounts offset | (33) | (40)
Progress Energy |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 90 | 248
Derivative Asset, Current | 31 | 110
Net amounts presented in Current Assets: Other | 16 | 51
Progress Energy | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 41 | 140
Gross amounts offset | (10) | (30)
Progress Energy | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 49 | 108
Gross amounts offset | (33) | (57)
Duke Energy Progress |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 60 | 230
Derivative Asset, Current | 2 | 92
Net amounts presented in Current Assets: Other | 15 | 51
Duke Energy Progress | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 12 | 122
Gross amounts offset | (10) | (30)
Duke Energy Progress | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 48 | 108
Gross amounts offset | (33) | (57)
Duke Energy Florida |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 30 | 17
Derivative Asset, Current | 29 | 17
Net amounts presented in Current Assets: Other | 1 |
Duke Energy Florida | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 29 | 17
Duke Energy Florida | Noncurrent assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 1 |
Duke Energy Ohio |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 4 | 5
Derivative Asset, Current | 4 | 5
Duke Energy Ohio | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 4 | 5
Duke Energy Indiana |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 37 | 110
Derivative Asset, Current | 37 | 110
Duke Energy Indiana | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 37 | $ 110
Piedmont |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | 1 |
Derivative Asset, Current | 1 |
Piedmont | Current assets |  |
Offsetting Derivative Assets [Abstract] |  |
Gross amounts recognized | $ 1 |

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