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Variable Interest Entities (Receivables Sold) (Details) - Non-consolidated VIEs - CRC - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Duke Energy Ohio |  |
Variable Interest Entity [Line Items] |  |
Receivables sold | $ 361 | $ 423
Less: Retained interests | 150 | 198
Net receivables sold | 211 | 225
Duke Energy Indiana |  |
Variable Interest Entity [Line Items] |  |
Receivables sold | 351 | 508
Less: Retained interests | 208 | 317
Net receivables sold | $ 143 | $ 191

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