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v3.25.3

Related Party Transactions (Other Revenue and Expense) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | $ 6,225 | $ 6,017 | $ 17,829 | $ 17,208
Duke Energy Carolinas |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 1,778 | 1,943 | 5,236 | 5,498
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 | 153 | 186 | 488 | 589
Duke Energy Carolinas | Indemnification coverages | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 13 | 11 | 40 | 33
Duke Energy Carolinas | JDA | Duke Energy Progress |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, other revenues from transactions with related party | 12 | 7 | 102 | 29
Related party transaction, expenses from transactions with related party | 58 | 48 | 245 | 141
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 | 1 | 5 | 5 | 14
Progress Energy |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 2,988 | 2,844 | 8,237 | 7,893
Progress Energy | Corporate governance and shared service expenses | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 145 | 165 | 436 | 524
Progress Energy | Indemnification coverages | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 16 | 13 | 48 | 42
Progress Energy | JDA | Duke Energy Carolinas |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, other revenues from transactions with related party | 58 | 48 | 245 | 141
Related party transaction, expenses from transactions with related party | 12 | 7 | 102 | 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 | 57 | 56
Duke Energy Progress |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 1,416 | 1,449 | 4,234 | 4,122
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 | 87 | 104 | 254 | 318
Duke Energy Progress | Indemnification coverages | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 7 | 5 | 20 | 17
Duke Energy Progress | JDA | Duke Energy Carolinas |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, other revenues from transactions with related party | 58 | 48 | 245 | 141
Related party transaction, expenses from transactions with related party | 12 | 7 | 102 | 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 | 57 | 56
Duke Energy Florida |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 1,569 | 1,390 | 3,993 | 3,758
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 | 58 | 61 | 182 | 206
Duke Energy Florida | Indemnification coverages | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 9 | 8 | 28 | 25
Duke Energy Ohio |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 543 | 496 | 1,678 | 1,494
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 | 68 | 74 | 202 | 228
Duke Energy Ohio | Indemnification coverages | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 1 | 2 | 4 | 5
Duke Energy Indiana |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 750 | 609 | 2,065 | 1,815
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 | 80 | 98 | 224 | 283
Duke Energy Indiana | Indemnification coverages | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 2 | 2 | 7 | 7
Piedmont |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 288 | 220 | 1,061 | 785
Piedmont | Corporate governance and shared service expenses | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 38 | 40 | 105 | 121
Piedmont | Indemnification coverages | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | 1 | 1 | 4 | 3
Piedmont | Intercompany natural gas purchases and sales | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, other revenues from transactions with related party | 20 | 24 | 62 | 70
Piedmont | Natural gas storage and transportation costs | Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party transaction, expenses from transactions with related party | $ 5 | $ 5 | $ 16 | $ 17

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