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Related Party Transactions (Intercompany Income Taxes) (Details) - Related Party - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Duke Energy Carolinas
Related Party Transaction [Line Items]
Intercompany income tax receivable		$ 0
Intercompany income tax payable	$ 53	419
Progress Energy
Related Party Transaction [Line Items]
Intercompany income tax receivable		0
Intercompany income tax payable	55	169
Duke Energy Progress
Related Party Transaction [Line Items]
Intercompany income tax receivable		0
Intercompany income tax payable	14	315
Duke Energy Florida
Related Party Transaction [Line Items]
Intercompany income tax receivable		154
Intercompany income tax payable	40	0
Duke Energy Ohio
Related Party Transaction [Line Items]
Intercompany income tax receivable		0
Intercompany income tax payable	35	43
Duke Energy Indiana
Related Party Transaction [Line Items]
Intercompany income tax receivable		0
Intercompany income tax payable	31	110
Piedmont
Related Party Transaction [Line Items]
Intercompany income tax receivable		0
Intercompany income tax payable	$ 87	$ 43

X

- Definition

Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations.

+ References

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- Definition

Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

+ References

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- Definition

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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