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Variable Interest Entities (Receivables Sold) (Details) - VIE not primary beneficiary - CRC - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Duke Energy Ohio |  |
Variable Interest Entities [Line Items] |  |
Receivables sold | $ 334 | $ 423
Less: Retained interests | 122 | 198
Net receivables sold | 212 | 225
Duke Energy Indiana |  |
Variable Interest Entities [Line Items] |  |
Receivables sold | 330 | 508
Less: Retained interests | 161 | 317
Net receivables sold | $ 169 | $ 191

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