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Asset Retirement Obligations (Recorded on the Balance Sheet) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | $ 9,156 | $ 12,728 | $ 12,600
Less: Current portion | 596 | 773 |
Total noncurrent asset retirement obligation | 8,560 | 11,955 |
Decommissioning of nuclear power facilities |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 4,576 |  |
Closure of ash impoundments |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 4,313 |  |
Other |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 267 |  |
Duke Energy Carolinas |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 4,013 | 5,382 | 5,301
Less: Current portion | 224 | 261 |
Total noncurrent asset retirement obligation | 3,789 | 5,121 |
Duke Energy Carolinas | Decommissioning of nuclear power facilities |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 1,949 |  |
Duke Energy Carolinas | Closure of ash impoundments |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 2,010 |  |
Duke Energy Carolinas | Other |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 54 |  |
Progress Energy |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 4,145 | 6,181 | 6,112
Less: Current portion | 245 | 289 |
Total noncurrent asset retirement obligation | 3,900 | 5,892 |
Progress Energy | Decommissioning of nuclear power facilities |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 2,601 |  |
Progress Energy | Closure of ash impoundments |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 1,449 |  |
Progress Energy | Other |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 95 |  |
Duke Energy Progress |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 3,870 | 5,823 | 5,675
Less: Current portion | 244 | 288 |
Total noncurrent asset retirement obligation | 3,626 | 5,535 |
Duke Energy Progress | Decommissioning of nuclear power facilities |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 2,410 |  |
Duke Energy Progress | Closure of ash impoundments |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 1,427 |  |
Duke Energy Progress | Other |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 33 |  |
Duke Energy Florida |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 275 | 358 | 437
Less: Current portion | 1 | 1 |
Total noncurrent asset retirement obligation | 274 | 357 |
Duke Energy Florida | Decommissioning of nuclear power facilities |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 191 |  |
Duke Energy Florida | Closure of ash impoundments |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 21 |  |
Duke Energy Florida | Other |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 63 |  |
Duke Energy Ohio |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 136 | 154 | 136
Less: Current portion | 6 | 17 |
Total noncurrent asset retirement obligation | 130 | 137 |
Duke Energy Ohio | Closure of ash impoundments |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 73 |  |
Duke Energy Ohio | Other |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 63 |  |
Duke Energy Indiana |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 809 | 951 | 987
Less: Current portion | 120 | 207 |
Total noncurrent asset retirement obligation | 689 | 744 |
Duke Energy Indiana | Closure of ash impoundments |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 781 |  |
Duke Energy Indiana | Other |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 28 |  |
Piedmont |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | 26 | 26 | $ 22
Total noncurrent asset retirement obligation | 26 | $ 26 |
Piedmont | Other |  |  |
Asset Retirement Obligation [Line Items] |  |  |
Total asset retirement obligation | $ 26 |  |

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