Variable Interest Entities (Schedule of Accounts Receivable Securitizations) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Long-Term Debt	$ 72,452	$ 65,873
Duke Energy Carolinas
Variable Interest Entity [Line Items]
Long-Term Debt	15,693	12,948
Duke Energy Progress
Variable Interest Entity [Line Items]
Long-Term Debt	11,492	10,568
Duke Energy Florida
Variable Interest Entity [Line Items]
Long-Term Debt	9,812	9,381
Consolidated VIEs
Variable Interest Entity [Line Items]
Long-Term Debt	3,000	3,108
Consolidated VIEs | Duke Energy Carolinas
Variable Interest Entity [Line Items]
Long-Term Debt	708	689
Consolidated VIEs | Duke Energy Progress
Variable Interest Entity [Line Items]
Long-Term Debt	1,079	1,114
Consolidated VIEs | Duke Energy Florida
Variable Interest Entity [Line Items]
Long-Term Debt	831	890
Consolidated VIEs | CRC
Variable Interest Entity [Line Items]
Credit facility amount	350
Long-Term Debt	312	350
Restricted receivables	663	917
Consolidated VIEs | DERF | Duke Energy Carolinas
Variable Interest Entity [Line Items]
Credit facility amount	500
Long-Term Debt	500	471
Restricted receivables	991	928
Consolidated VIEs | DEPR | Duke Energy Progress
Variable Interest Entity [Line Items]
Credit facility amount	400
Long-Term Debt	400	400
Restricted receivables	833	793
Consolidated VIEs | DEFR | Duke Energy Florida
Variable Interest Entity [Line Items]
Credit facility amount	325
Long-Term Debt	325	250
Restricted receivables	$ 532	$ 490