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Related Party Transactions (Other Revenue and Expense) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | $ 5,720 | $ 5,609
Duke Energy Carolinas |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 1,803 | 1,526
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 | 214 | 196
Duke Energy Carolinas | Indemnification coverages | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 11 | 9
Duke Energy Carolinas | JDA | Duke Energy Progress |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 40 | 29
Related party transaction, other revenues from transactions with related party | 16 | 13
Duke Energy Carolinas | Intercompany natural gas purchases and sales | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 4 | 5
Progress Energy |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 2,516 | 2,436
Progress Energy | Corporate governance and shared service expenses | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 188 | 178
Progress Energy | Indemnification coverages | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 14 | 12
Progress Energy | JDA | Duke Energy Carolinas |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 16 | 13
Related party transaction, other revenues from transactions with related party | 40 | 29
Progress Energy | Intercompany natural gas purchases and sales | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 19 | 19
Duke Energy Progress |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 1,385 | 1,262
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 | 114 | 107
Duke Energy Progress | Indemnification coverages | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 6 | 5
Duke Energy Progress | JDA | Duke Energy Carolinas |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 16 | 13
Related party transaction, other revenues from transactions with related party | 40 | 29
Duke Energy Progress | Intercompany natural gas purchases and sales | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 19 | 19
Duke Energy Florida |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 1,128 | 1,170
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 | 74 | 71
Duke Energy Florida | Indemnification coverages | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 8 | 7
Duke Energy Ohio |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 526 | 561
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 | 77 | 73
Duke Energy Ohio | Indemnification coverages | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 2 | 1
Duke Energy Indiana |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 634 | 809
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 | 102 | 99
Duke Energy Indiana | Indemnification coverages | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 2 | 2
Piedmont |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 342 | 369
Piedmont | Corporate governance and shared service expenses | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 41 | 38
Piedmont | Indemnification coverages | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 1 | 1
Piedmont | Intercompany natural gas purchases and sales | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, other revenues from transactions with related party | 23 | 24
Piedmont | Natural gas storage and transportation costs | Related Party |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | $ 6 | $ 6

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