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Asset Retirement Obligations (Recorded on the Balance Sheet) (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | $ 9,644 | $ 9,988
Less: Current portion | 592 | 650
Asset retirement obligations | 9,052 | 9,338
Decommissioning of nuclear power facilities |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 4,625 |
Closure of ash impoundments |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 4,688 |
Other |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 331 |
Duke Energy Carolinas |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 3,854 | 3,990
Less: Current portion | 247 | 247
Asset retirement obligations | 3,607 | 3,743
Duke Energy Carolinas | Decommissioning of nuclear power facilities |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 2,131 |
Duke Energy Carolinas | Closure of ash impoundments |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 1,648 |
Duke Energy Carolinas | Other |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 75 |
Progress Energy |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 4,482 | 4,548
Less: Current portion | 208 | 231
Asset retirement obligations | 4,274 | 4,317
Progress Energy | Decommissioning of nuclear power facilities |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 2,479 |
Progress Energy | Closure of ash impoundments |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 1,868 |
Progress Energy | Other |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 135 |
Duke Energy Progress |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 4,287 | 4,334
Less: Current portion | 206 | 230
Asset retirement obligations | 4,081 | 4,104
Duke Energy Progress | Decommissioning of nuclear power facilities |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 2,400 |
Duke Energy Progress | Closure of ash impoundments |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 1,844 |
Duke Energy Progress | Other |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 43 |
Duke Energy Florida |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 195 | 214
Less: Current portion | 2 | 1
Asset retirement obligations | 193 | 213
Duke Energy Florida | Decommissioning of nuclear power facilities |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 79 |
Duke Energy Florida | Closure of ash impoundments |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 24 |
Duke Energy Florida | Other |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 92 |
Duke Energy Ohio |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 133 | 139
Less: Current portion | 8 | 8
Asset retirement obligations | 125 | 131
Duke Energy Ohio | Decommissioning of nuclear power facilities |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 0 |
Duke Energy Ohio | Closure of ash impoundments |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 65 |
Duke Energy Ohio | Other |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 68 |
Duke Energy Indiana |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 1,136 | 1,268
Less: Current portion | 130 | 164
Asset retirement obligations | 1,006 | 1,104
Duke Energy Indiana | Decommissioning of nuclear power facilities |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 0 |
Duke Energy Indiana | Closure of ash impoundments |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 1,107 |
Duke Energy Indiana | Other |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 29 |
Piedmont |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 26 | 24
Less: Current portion | 0 |
Asset retirement obligations | 26 | $ 24
Piedmont | Decommissioning of nuclear power facilities |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 0 |
Piedmont | Closure of ash impoundments |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | 0 |
Piedmont | Other |  |
Asset Retirement Obligation [Line Items] |  |
Total asset retirement obligation | $ 26 |

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