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Revenue (Reserve for Credit Losses for Trade and Other Receivables) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | $ 207 | $ 202 | $ 213
Write-Offs | (164) | (131) | (162)
Credit Loss Expense | 106 | 97 | 99
Other Adjustments | 45 | 39 | 52
Ending balance | 194 | 207 | 202
Duke Energy Carolinas |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 69 | 56 | 68
Write-Offs | (52) | (55) | (71)
Credit Loss Expense | 26 | 39 | 35
Other Adjustments | 12 | 29 | 24
Ending balance | 55 | 69 | 56
Progress Energy |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 73 | 74 | 81
Write-Offs | (62) | (73) | (84)
Credit Loss Expense | 39 | 51 | 48
Other Adjustments | 15 | 21 | 29
Ending balance | 65 | 73 | 74
Duke Energy Progress |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 44 | 44 | 44
Write-Offs | (37) | (45) | (41)
Credit Loss Expense | 16 | 25 | 12
Other Adjustments | 15 | 20 | 29
Ending balance | 38 | 44 | 44
Duke Energy Florida |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 29 | 31 | 36
Write-Offs | (25) | (28) | (42)
Credit Loss Expense | 23 | 26 | 37
Ending balance | 27 | 29 | 31
Duke Energy Ohio |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 43 | 9 | 6
Write-Offs | (21) |  |
Credit Loss Expense | 15 | 3 | 3
Other Adjustments | 14 | 31 |
Ending balance | 51 | 43 | 9
Duke Energy Indiana |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 15 | 5 | 4
Write-Offs | (13) |  |
Credit Loss Expense | 13 | 2 | 1
Other Adjustments |  | 8 |
Ending balance | 15 | 15 | 5
Piedmont |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 7 | 8 | 11
Write-Offs | (17) | (3) | (8)
Credit Loss Expense | 14 | 2 | 5
Other Adjustments | 2 |  |
Ending balance | $ 6 | $ 7 | $ 8

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