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v3.25.2

Income Taxes (Narrative) (Details) $ in Millions | 1 Months Ended
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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

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