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Related Party Transactions (Other Revenue and Expense) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | $ 22,457 | $ 22,042 | $ 22,778
Duke Energy Carolinas |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 7,136 | 6,255 | 5,799
Duke Energy Carolinas | Corporate governance and shared service expenses | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 812 | 823 | 838
Duke Energy Carolinas | Indemnification coverages | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 44 | 34 | 28
Duke Energy Carolinas | Joint Dispatch Agreement (JDA) revenue | Duke Energy Progress |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 187 | 177 | 600
Related party transaction, other revenues from transactions with related party | 35 | 34 | 109
Duke Energy Carolinas | Intercompany natural gas transactions | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 12 | 11 | 12
Progress Energy |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 10,234 | 10,485 | 10,297
Progress Energy | Corporate governance and shared service expenses | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 709 | 736 | 818
Progress Energy | Indemnification coverages | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 57 | 47 | 43
Progress Energy | Joint Dispatch Agreement (JDA) revenue | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 35 | 34 | 109
Related party transaction, other revenues from transactions with related party | 187 | 177 | 600
Progress Energy | Intercompany natural gas transactions | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 75 | 75 | 76
Duke Energy Progress |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 5,316 | 5,041 | 5,351
Duke Energy Progress | Corporate governance and shared service expenses | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 426 | 434 | 469
Duke Energy Progress | Indemnification coverages | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 23 | 20 | 20
Duke Energy Progress | Joint Dispatch Agreement (JDA) revenue | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 35 | 34 | 109
Related party transaction, other revenues from transactions with related party | 187 | 177 | 600
Duke Energy Progress | Intercompany natural gas transactions | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 75 | 75 | 76
Duke Energy Florida |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 4,898 | 5,426 | 4,933
Duke Energy Florida | Corporate governance and shared service expenses | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 283 | 302 | 349
Duke Energy Florida | Indemnification coverages | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 34 | 27 | 23
Duke Energy Ohio |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 1,968 | 1,983 | 2,124
Duke Energy Ohio | Corporate governance and shared service expenses | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 304 | 294 | 334
Duke Energy Ohio | Indemnification coverages | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 6 | 5 | 5
Duke Energy Indiana |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 2,361 | 2,655 | 3,656
Duke Energy Indiana | Corporate governance and shared service expenses | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 355 | 365 | 447
Duke Energy Indiana | Indemnification coverages | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 10 | 8 | 8
Piedmont |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 1,098 | 1,066 | 1,680
Piedmont | Corporate governance and shared service expenses | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 166 | 149 | 155
Piedmont | Indemnification coverages | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | 4 | 4 | 3
Piedmont | Intercompany natural gas transactions | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, other revenues from transactions with related party | 87 | 86 | 88
Piedmont | Natural gas storage and transportation costs | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction, expenses from transactions with related party | $ 23 | $ 24 | $ 23

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