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Business Segments (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) reportable_segment segment	Dec. 31, 2024 USD ($) asset	Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment	2
Number of reportable segments | segment	2
Operating Revenues	$ 32,237	$ 30,357	$ 29,060
Duke Energy Progress
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 7,386	7,017	6,488
Duke Energy Carolinas
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 9,713	9,718	8,288
Progress Energy
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 14,509	13,633	13,544
Duke Energy Florida
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 7,105	6,595	7,036
Duke Energy Ohio
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2
Operating Revenues	$ 2,797	$ 2,545	2,507
Duke Energy Indiana
Segment Reporting Information [Line Items]
Number of reportable segments | asset		1
Operating Revenues	$ 3,544	$ 3,040	3,399
Piedmont
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 2,237	$ 1,729	$ 1,628

X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 49
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-49

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-18

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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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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