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Asset Retirement Obligations (NDTF Information) (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
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NDTF Information [Abstract] |  |
Decommissioning costs | $ 8,972 |
Legally restricted NDTF investments, fair value | 11,373 | $ 10,044
Duke Energy Carolinas |  |
NDTF Information [Abstract] |  |
Decommissioning costs | 4,439 |
Legally restricted NDTF investments, fair value | 6,453 | 5,687
Duke Energy Progress |  |
NDTF Information [Abstract] |  |
Decommissioning costs | 4,477 |
Legally restricted NDTF investments, fair value | 4,920 | 4,357
Duke Energy Florida |  |
NDTF Information [Abstract] |  |
Decommissioning costs | 56 |
Progress Energy |  |
NDTF Information [Abstract] |  |
Decommissioning costs | 4,533 |
Legally restricted NDTF investments, fair value | $ 4,920 | $ 4,357

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- Definition Carrying amount of an asset that is legally restricted for purposes of settling an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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- Definition Amount of a decommissioning liability associated with a legal obligation that a firm incurs when it constructs or operates an asset that must eventually be withdrawn from active service. This may include operating assets such as nuclear power plants or shipping vessels. + References No definition available. + Details
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