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Variable Interest Entities (Schedule of Accounts Receivable Securitizations) (Details) - USD ($) $ in Millions | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2025 | Oct. 31, 2025 | Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Jan. 31, 2025 | Apr. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2024 | Apr. 01, 2024 | Feb. 29, 2024
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt | $ 80,108 |  |  |  |  |  |  |  | $ 76,340 |  |
Repayments of debt | 500 | $ 95 | $ 650 | $ 150 |  |  |  |  |  |  |
Duke Energy Carolinas |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt | 17,848 |  |  |  |  |  |  |  | 16,669 |  |
Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt | 13,461 |  |  |  |  |  |  |  | 11,371 |  |
Duke Energy Florida |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt | 10,870 |  |  |  |  |  |  |  | 9,814 |  |
Consolidated VIEs |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt | 3,308 |  |  |  |  |  |  |  | 1,842 |  |
Consolidated VIEs | Duke Energy Carolinas |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt | 1,316 |  |  |  |  |  |  |  | 198 |  |
Consolidated VIEs | Duke Energy Carolinas | DERF Accounts Receivable Securitization financing | Secured Debt |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  | $ 500 |  |  |  |  |
Consolidated VIEs | Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt | 1,224 |  |  |  |  |  |  |  | 809 |  |
Consolidated VIEs | Duke Energy Progress | DERF Accounts Receivable Securitization financing | Secured Debt |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  | $ 400 |  |  |  |  |  |
Consolidated VIEs | Duke Energy Florida |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt | $ 712 |  |  |  |  |  |  |  | 773 |  |
Consolidated VIEs | Duke Energy Florida | DEFR Accounts Receivable Securitization Facility Maturing April 2024 | Secured Debt |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  |  | $ 325 |  |  |  |
Consolidated VIEs | Duke Energy Florida | DERF Accounts Receivable Securitization financing | Secured Debt |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  | 500 |  |  |  |  |
Consolidated VIEs | Cinergy Receivables [Member] |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted receivables |  |  |  |  |  |  |  |  |  |  | $ 682
Repayments of debt |  |  |  |  |  |  |  | $ 350 |  |  |
Consolidated VIEs | DERF | Duke Energy Carolinas |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  |  |  |  |  |  | 500 |  |
Restricted receivables |  |  |  |  |  | $ 1,081 |  |  | 1,054 |  |
Consolidated VIEs | DERF | Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted receivables |  |  |  |  | $ 943 |  |  |  |  |  |
Consolidated VIEs | DEPR | Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  |  |  |  |  |  | 400 |  |
Restricted receivables |  |  |  |  |  |  |  |  | $ 835 |  |
Consolidated VIEs | Defr [Member] | Duke Energy Florida |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted receivables |  |  |  |  |  |  |  |  |  | $ 459 |

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