Variable Interest Entities (Fair Value Assumptions) (Details) - CRC - Non-consolidated VIEs	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Duke Energy Ohio
Variable Interest Entity [Line Items]
Anticipated credit loss ratio	0.50%	0.50%
Discount rate	2.70%	1.10%
Receivable turnover rate	13.50%	13.50%
Duke Energy Indiana
Variable Interest Entity [Line Items]
Anticipated credit loss ratio	0.30%	0.30%
Discount rate	2.70%	1.10%
Receivable turnover rate	11.30%	11.30%