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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2020
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) | 2020 |  | 2019 |  | 2018
Duke Energy | $ | 61 |  |  | $ | 65 |  |  | $ | 56 |
Duke Energy Carolinas | 22 |  |  | 24 |  |  | 20 |
Progress Energy | 23 |  |  | 24 |  |  | 21 |
Duke Energy Progress | 15 |  |  | 15 |  |  | 13 |
Duke Energy Florida | 9 |  |  | 9 |  |  | 8 |
Duke Energy Ohio | 4 |  |  | 5 |  |  | 4 |
Duke Energy Indiana | 6 |  |  | 6 |  |  | 5 |
Piedmont | 3 |  |  | 3 |  |  | 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) | 2020 |  | 2019 |  | 2018
RSU awards | $ | 46 |  |  | $ | 44 |  |  | $ | 43 |
Performance awards | 38 |  |  | 45 |  |  | 35 |
Pretax stock-based compensation cost | $ | 84 |  |  | $ | 89 |  |  | $ | 78 |
Stock-based compensation costs capitalized | 5 |  |  | 5 |  |  | 5 |
Stock-based compensation expense | $ | 79 |  |  | $ | 84 |  |  | $ | 73 |
Tax benefit associated with stock-based compensation expense | $ | 18 |  |  | $ | 19 |  |  | $ | 17 |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity | The following table includes information related to RSU awards.
| Years Ended December 31,
| 2020 |  | 2019 |  | 2018
Shares granted (in thousands) | 498 |  |  | 571 |  |  | 649 |
Fair value (in millions) | $ | 50 |  |  | $ | 51 |  |  | $ | 49 |
The following table summarizes information about RSU awards outstanding.
|  |  | Weighted Average
| Shares |  | Grant Date Fair Value
| (in thousands) |  | (per share)
Outstanding at December 31, 2019 | 1,010 |  |  | $ | 83 |
Granted | 498 |  |  | 100 |
Vested | (532) |  |  | 82 |
Forfeited | (37) |  |  | 92 |
Outstanding at December 31, 2020 | 939 |  |  | 93 |
RSU awards expected to vest | 898 |  |  | 93 |
Schedule of Performance Awards | The following table includes information related to stock-based performance awards.
| Years Ended December 31,
| 2020 |  | 2019 |  | 2018
Shares granted assuming target performance (in thousands) | 319 |  |  | 320 |  |  | 372 |
Fair value (in millions) | $ | 34 |  |  | $ | 27 |  |  | $ | 27 |
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, 2019 | 1,109 |  |  | $ | 80 |
Granted | 319 |  |  | 105 |
Vested | (448) |  |  | 81 |
Forfeited | (18) |  |  | 88 |
Outstanding at December 31, 2020 | 962 |  |  | 87 |
Stock-based performance awards expected to vest | 937 |  |  | 87 |

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