Variable Interest Entities (Schedule of Accounts Receivable Securitizations) (Details) - USD ($)	Mar. 31, 2024	Feb. 29, 2024	Dec. 31, 2023
Variable Interest Entities [Line Items]
Long-Term Debt	$ 74,979,000,000		$ 72,452,000,000
Duke Energy Carolinas
Variable Interest Entities [Line Items]
Long-Term Debt	16,199,000,000		15,693,000,000
Duke Energy Progress
Variable Interest Entities [Line Items]
Long-Term Debt	11,955,000,000		11,492,000,000
Duke Energy Florida
Variable Interest Entities [Line Items]
Long-Term Debt	9,791,000,000		9,812,000,000
CRC | VIE primary beneficiary
Variable Interest Entities [Line Items]
Long-Term Debt	0		312,000,000
Accounts receivable from securitization	0	$ 682,000,000	663,000,000
DERF | Duke Energy Carolinas | VIE primary beneficiary
Variable Interest Entities [Line Items]
Facility size	500,000,000
Long-Term Debt	500,000,000		500,000,000
Accounts receivable from securitization	997,000,000		991,000,000
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	789,000,000		833,000,000
DEFR | Duke Energy Florida | VIE primary beneficiary
Variable Interest Entities [Line Items]
Long-Term Debt	325,000,000		325,000,000
Accounts receivable from securitization	$ 467,000,000		$ 532,000,000