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v3.23.1

Related Party Transactions (Other Revenue and Expense) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Duke Energy Carolinas | Corporate governance and shared service expenses | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | $ 196 | $ 206
Duke Energy Carolinas | Indemnification coverages | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 9 | 7
Duke Energy Carolinas | JDA | Duke Energy Progress |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 29 | 94
Related party transaction, other revenues from transactions with related party | 13 | 26
Duke Energy Carolinas | Intercompany natural gas purchases and sales | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 5 | 13
Progress Energy | Corporate governance and shared service expenses | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 178 | 196
Progress Energy | Indemnification coverages | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 12 | 11
Progress Energy | JDA | Duke Energy Carolinas |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 13 | 26
Related party transaction, other revenues from transactions with related party | 29 | 94
Progress Energy | Intercompany natural gas purchases and sales | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 19 | 19
Duke Energy Progress | Corporate governance and shared service expenses | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 107 | 119
Duke Energy Progress | Indemnification coverages | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 5 | 5
Duke Energy Progress | JDA | Duke Energy Carolinas |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 13 | 26
Related party transaction, other revenues from transactions with related party | 29 | 94
Duke Energy Progress | Intercompany natural gas purchases and sales | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 19 | 19
Duke Energy Florida | Corporate governance and shared service expenses | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 71 | 77
Duke Energy Florida | Indemnification coverages | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 7 | 6
Duke Energy Ohio | Corporate governance and shared service expenses | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 73 | 82
Duke Energy Ohio | Indemnification coverages | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 1 | 1
Duke Energy Indiana | Corporate governance and shared service expenses | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 99 | 124
Duke Energy Indiana | Indemnification coverages | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 2 | 2
Piedmont | Corporate governance and shared service expenses | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 38 | 35
Piedmont | Indemnification coverages | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | 1 | 1
Piedmont | Intercompany natural gas purchases and sales | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, other revenues from transactions with related party | 24 | 32
Piedmont | Natural gas storage and transportation costs | Affiliated Entity |  |
Related Party Transaction [Line Items] |  |
Related party transaction, expenses from transactions with related party | $ 6 | $ 6

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