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Asset Retirement Obligations (NDTF Information) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
NDTF Information [Abstract] |  |
Annual funding requirement | $ 4 |
Decommissioning costs | 8,814 |
Legally restricted NDTF investments, fair value | 8,851 | $ 7,466
Duke Energy Carolinas |  |
NDTF Information [Abstract] |  |
Decommissioning costs | 4,439 |
Legally restricted NDTF investments, fair value | 5,002 | 4,208
Duke Energy Progress |  |
NDTF Information [Abstract] |  |
Annual funding requirement | 4 |
Decommissioning costs | 4,181 |
Legally restricted NDTF investments, fair value | 3,849 | $ 3,258
Duke Energy Florida |  |
NDTF Information [Abstract] |  |
Decommissioning costs | $ 194 |

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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associated with a legal obligation that a firm incurs when it constructs or operates an asset that must eventually be withdrawn from active service.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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