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Property, Plant and Equipment (Schedule of Capitalized Interest) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Capitalized interest	$ 182	$ 201	$ 201
Duke Energy Carolinas
Property, Plant and Equipment [Line Items]
Capitalized interest	66	61	62
Progress Energy
Property, Plant and Equipment [Line Items]
Capitalized interest	60	57	41
Duke Energy Progress
Property, Plant and Equipment [Line Items]
Capitalized interest	53	52	35
Duke Energy Florida
Property, Plant and Equipment [Line Items]
Capitalized interest	7	5	6
Duke Energy Ohio
Property, Plant and Equipment [Line Items]
Capitalized interest	10	14	16
Duke Energy Indiana
Property, Plant and Equipment [Line Items]
Capitalized interest	2	13
PISCC amortization			(21)
Piedmont
Property, Plant and Equipment [Line Items]
Capitalized interest	$ 7	$ 8	$ 8

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- Definition

Allowance for Funds Used During Construction, Post-In-Service carrying Costs, Capitalized Interest (Reversal Of Cost), Amortization

+ References

No definition available.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

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- Definition

Amount capitalized of allowance for funds used during construction.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 980
-SubTopic 835
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478698/980-835-25-1

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