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Severance (Expenses) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Restructuring Cost and Reserve [Line Items] |  |  |
Severance expense | $ (28) | $ 102 | $ 65
Amortization of deferred severance charges |  | 22 | 33
Operation, maintenance and other |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance expense |  | 97 |
Employee Severance Charges, 2021 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (6) |  | (19)
Employee Severance Charges, 2022 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (1) | (14) |
Employee Severance Charges, 2023 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (27) |  |
Duke Energy Carolinas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance expense | (11) | 53 | 40
Amortization of deferred severance charges |  | 14 | 22
Duke Energy Carolinas | Employee Severance Charges, 2021 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (2) |  | (6)
Duke Energy Carolinas | Employee Severance Charges, 2022 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (1) | (7) |
Duke Energy Carolinas | Employee Severance Charges, 2023 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (11) |  |
Progress Energy |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance expense | (9) | 33 | 20
Amortization of deferred severance charges |  | 8 | 11
Progress Energy | Employee Severance Charges, 2021 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (3) |  | (8)
Progress Energy | Employee Severance Charges, 2022 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments |  | (5) |
Progress Energy | Employee Severance Charges, 2023 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (9) |  |
Duke Energy Progress |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance expense | (5) | 21 | 17
Amortization of deferred severance charges |  | 8 | 11
Duke Energy Progress | Employee Severance Charges, 2021 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (2) |  | (4)
Duke Energy Progress | Employee Severance Charges, 2022 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments |  | (3) |
Duke Energy Progress | Employee Severance Charges, 2023 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (5) |  |
Duke Energy Florida |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance expense | (4) | 12 | 3
Duke Energy Florida | Employee Severance Charges, 2021 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (1) |  | (4)
Duke Energy Florida | Employee Severance Charges, 2022 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments |  | (2) |
Duke Energy Florida | Employee Severance Charges, 2023 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (4) |  |
Duke Energy Ohio |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance expense | (2) | 3 | 1
Duke Energy Ohio | Employee Severance Charges, 2021 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments |  |  | (1)
Duke Energy Ohio | Employee Severance Charges, 2022 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments |  | (1) |
Duke Energy Ohio | Employee Severance Charges, 2023 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (2) |  |
Duke Energy Indiana |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance expense | (4) | 6 | 2
Duke Energy Indiana | Employee Severance Charges, 2021 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (1) |  | (2)
Duke Energy Indiana | Employee Severance Charges, 2022 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments |  | (1) |
Duke Energy Indiana | Employee Severance Charges, 2023 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | (4) |  |
Piedmont |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance expense | (2) | $ 4 | 2
Piedmont | Employee Severance Charges, 2021 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments |  |  | $ (1)
Piedmont | Employee Severance Charges, 2023 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance charges adjustments | $ (2) |  |

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