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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2023
Share-Based Payment Arrangement [Abstract] |
Schedule of Total Stock-Based Compensation Expense, net of tax | The following table summarizes the total expense recognized by the Duke Energy Registrants, net of tax, for stock-based compensation.
| Years Ended December 31,
(in millions) | 2023 |  | 2022 |  | 2021
Duke Energy | $ | 71 |  |  | $ | 74 |  |  | $ | 64 |
Duke Energy Carolinas | 25 |  |  | 27 |  |  | 23 |
Progress Energy | 28 |  |  | 27 |  |  | 24 |
Duke Energy Progress | 17 |  |  | 17 |  |  | 15 |
Duke Energy Florida | 11 |  |  | 10 |  |  | 9 |
Duke Energy Ohio | 5 |  |  | 5 |  |  | 5 |
Duke Energy Indiana | 7 |  |  | 7 |  |  | 6 |
Piedmont | 4 |  |  | 4 |  |  | 3 |
Schedule of Stock-Based Compensation Expense | Duke Energy's pretax stock-based compensation costs, the tax benefit associated with stock-based compensation expense and stock-based compensation costs capitalized are included in the following table.
| Years Ended December 31,
(in millions) | 2023 |  | 2022 |  | 2021
RSU awards | $ | 54 |  |  | $ | 58 |  |  | $ | 49 |
Performance awards | 43 |  |  | 42 |  |  | 39 |
Pretax stock-based compensation cost | $ | 97 |  |  | $ | 100 |  |  | $ | 88 |
Stock-based compensation costs capitalized | 6 |  |  | 5 |  |  | 5 |
Stock-based compensation expense | $ | 91 |  |  | $ | 95 |  |  | $ | 83 |
Tax benefit associated with stock-based compensation expense | $ | 20 |  |  | $ | 21 |  |  | $ | 19 |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity | The following table includes information related to RSU awards.
| Years Ended December 31,
| 2023 |  | 2022 |  | 2021
Shares granted (in thousands) | 670 |  |  | 654 |  |  | 673 |
Fair value (in millions) | $ | 65 |  |  | $ | 64 |  |  | $ | 59 |
The following table summarizes information about RSU awards outstanding.
|  |  | Weighted Average
| Shares |  | Grant Date Fair Value
| (in thousands) |  | (per share)
Outstanding at December 31, 2022 | 1,097 |  |  | $ | 95 |
Granted | 670 |  |  | 97 |
Vested | (548) |  |  | 95 |
Forfeited | (104) |  |  | 96 |
Outstanding at December 31, 2023 | 1,115 |  |  | 96 |
RSU awards expected to vest | 1,064 |  |  | 96 |
Schedule of Performance Awards | The following table includes information related to stock-based performance awards.
| Years Ended December 31,
| 2023 |  | 2022 |  | 2021
Shares granted assuming target performance (in thousands) | 422 |  |  | 408 |  |  | 380 |
Fair value (in millions) | $ | 42 |  |  | $ | 40 |  |  | $ | 33 |
Schedule of Nonvested Performance-based Units Activity | The following table summarizes information about stock-based performance awards outstanding and assumes payout at the target level.
|  |  | Weighted Average
| Shares |  | Grant Date Fair Value
| (in thousands) |  | (per share)
Outstanding at December 31, 2022 | 1,033 |  |  | $ | 97 |
Granted | 422 |  |  | 100 |
Vested | (298) |  |  | 105 |
Forfeited | (42) |  |  | 98 |
Outstanding at December 31, 2023 | 1,115 |  |  | 96 |
Stock-based performance awards expected to vest | 1,086 |  |  | 96 |

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