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Variable Interest Entities (Receivables Sold) (Details) - VIE not primary beneficiary - CRC - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Duke Energy Ohio |  |
Variable Interest Entities [Line Items] |  |
Receivables sold | $ 313 | $ 269
Less: Retained interests | 131 | 79
Net receivables sold | 182 | 190
Duke Energy Indiana |  |
Variable Interest Entities [Line Items] |  |
Receivables sold | 466 | 328
Less: Retained interests | 222 | 97
Net receivables sold | $ 244 | $ 231

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