Severance (Rollforward) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Restructuring Reserve [Roll Forward]
Balance, beginning of period	$ 19	$ 102
Provision/Adjustments	(8)	(28)
Cash Reductions	(11)	(55)
Balance, end of period		19
Duke Energy Carolinas
Restructuring Reserve [Roll Forward]
Balance, beginning of period	8	35
Provision/Adjustments	(3)	(6)
Cash Reductions	(5)	(21)
Balance, end of period		8
Progress Energy
Restructuring Reserve [Roll Forward]
Balance, beginning of period	2	16
Provision/Adjustments	(1)	(3)
Cash Reductions	(1)	(11)
Balance, end of period		2
Duke Energy Progress
Restructuring Reserve [Roll Forward]
Balance, beginning of period	1	8
Provision/Adjustments	(1)	(1)
Cash Reductions		(6)
Balance, end of period		1
Duke Energy Florida
Restructuring Reserve [Roll Forward]
Balance, beginning of period	1	8
Provision/Adjustments		(2)
Cash Reductions	$ (1)	(5)
Balance, end of period		1
Duke Energy Ohio
Restructuring Reserve [Roll Forward]
Balance, beginning of period		1
Provision/Adjustments		(1)
Duke Energy Indiana
Restructuring Reserve [Roll Forward]
Balance, beginning of period		4
Provision/Adjustments		(3)
Cash Reductions		(1)
Piedmont
Restructuring Reserve [Roll Forward]
Balance, beginning of period		2
Provision/Adjustments		(1)
Cash Reductions		$ (1)

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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