Income Taxes (Narrative) (Details) $ in Millions	1 Months Ended
Apr. 30, 2025 USD ($)
Tax Credit Carryforward [Line Items]
Tax credits	$ 643
Duke Energy Carolinas \| Sale of Nuclear Power PTCs
Tax Credit Carryforward [Line Items]
Decrease in deferred tax asset	478
Duke Energy Progress \| Sale of Nuclear Power PTCs
Tax Credit Carryforward [Line Items]
Decrease in deferred tax asset	69
Duke Energy Florida \| Sale of Nuclear Power PTCs
Tax Credit Carryforward [Line Items]
Decrease in deferred tax asset	$ 58

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12A
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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