Variable Interest Entities (Schedule of Accounts Receivable Securitizations) (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Variable Interest Entities [Line Items]
Long-Term Debt	$ 69,107,000,000	$ 65,873,000,000
Duke Energy Carolinas
Variable Interest Entities [Line Items]
Long-Term Debt	14,787,000,000	12,948,000,000
Duke Energy Progress
Variable Interest Entities [Line Items]
Long-Term Debt	11,527,000,000	10,568,000,000
Duke Energy Florida
Variable Interest Entities [Line Items]
Long-Term Debt	9,353,000,000	9,381,000,000
CRC | VIE primary beneficiary
Variable Interest Entities [Line Items]
Facility size	350,000,000
Long-Term Debt	350,000,000	350,000,000
Accounts receivable from securitization	784,000,000	917,000,000
DERF | Duke Energy Carolinas | VIE primary beneficiary
Variable Interest Entities [Line Items]
Facility size	500,000,000
Long-Term Debt	500,000,000	471,000,000
Accounts receivable from securitization	782,000,000	928,000,000
DEPR | Duke Energy Progress | VIE primary beneficiary
Variable Interest Entities [Line Items]
Facility size	400,000,000
Long-Term Debt	400,000,000	400,000,000
Accounts receivable from securitization	654,000,000	793,000,000
DEFR | Duke Energy Florida | VIE primary beneficiary
Variable Interest Entities [Line Items]
Facility size	325,000,000
Long-Term Debt	250,000,000	250,000,000
Accounts receivable from securitization	$ 443,000,000	$ 490,000,000