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Variable Interest Entities (Narrative) (Details) - VIE primary beneficiary - USD ($)	1 Months Ended			9 Months Ended	12 Months Ended
	Apr. 30, 2024	Mar. 31, 2024	Nov. 30, 2021	Sep. 30, 2024	Dec. 31, 2023	Apr. 01, 2024	Feb. 29, 2024
Variable Interest Entities [Line Items]
Variable interest entity, financial or other support, amount				$ 0	$ 0
Duke Energy Florida | DEFR Accounts Receivable Securitization Facility Maturing April 2024 | Secured Debt
Variable Interest Entities [Line Items]
Repayments of debt	$ 325,000,000
CRC
Variable Interest Entities [Line Items]
Repayments of debt		$ 350,000,000
Accounts receivable from securitization				$ 0	663,000,000		$ 682,000,000
Percent of proceeds received as cash				75.00%
Percent of proceeds received as subordinated note				25.00%
Minimum equity balance required by Cinergy Receivables				$ 3,000,000
CRC | Duke Energy Indiana
Variable Interest Entities [Line Items]
Accounts receivable from securitization							316,000,000
CRC | Duke Energy Ohio
Variable Interest Entities [Line Items]
Accounts receivable from securitization							$ 366,000,000
DECNCSF | Duke Energy Carolinas
Variable Interest Entities [Line Items]
Proceeds from issuance of senior secured bonds			$ 237,000,000
DEPNCSF | Duke Energy Progress
Variable Interest Entities [Line Items]
Proceeds from issuance of senior secured bonds			$ 770,000,000
DEFR | Duke Energy Florida
Variable Interest Entities [Line Items]
Accounts receivable from securitization				$ 0	$ 532,000,000	$ 459,000,000
DEPSCSF | Duke Energy Progress
Variable Interest Entities [Line Items]
Proceeds from issuance of senior secured bonds	$ 177,000,000

X

- Definition

Percent of proceeds from accounts receivable securitization received as cash.

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- Definition

Percent of proceeds from accounts receivable securitization received as subordinated note.

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- Definition

Minimum equity Balance required by Cinergy Receivables

+ References

No definition available.

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- Definition

The amount owed to the reporting entity by counterparties in securitized loan transactions.

+ References

No definition available.

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- Definition

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

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- Definition

The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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