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STOCK COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2024
Share-Based Payment Arrangement [Abstract] |
Schedule of employees participating in stock-based compensation programs | At December 31, 2024, the number of current and former employees participating in stock-based compensation programs for the Registrants was as follows:
| Southern Company | Alabama Power | Georgia Power | Mississippi Power | Southern Power | Southern Company Gas
Number of employees | 1,154 |  | 158 |  | 161 |  | 36 |  | 36 |  | 183 |
Assumptions used in the pricing model and the weighted average grant-date fair value of performance share award units granted | The following table shows the assumptions used in the pricing model and the weighted average grant-date fair value of TSR awards granted:
Year Ended December 31 | 2024 |  | 2023 |  | 2022
Expected volatility | 19.1% |  | 30.0% |  | 29.6%
Interest rate | 4.0% |  | 3.8% |  | 1.7%
Weighted average grant-date fair value | $80.99 |  | $76.83 |  | $79.69
Schedule of compensation costs and related tax benefits | Southern Company's total PSU compensation cost and the related tax benefit recognized in income for the years ended December 31, 2024, 2023, and 2022 were as follows:
| 2024 |  | 2023 |  | 2022
| (in millions)
Compensation cost recognized in income | $ | 102 |  |  | $ | 107 |  |  | $ | 101 |
Tax benefit of compensation cost recognized in income | 27 |  |  | 28 |  |  | 26 |
Southern Company's total RSU compensation cost and the related tax benefit recognized in income for the years ended December 31, 2024, 2023, and 2022 were as follows:
| 2024 |  | 2023 |  | 2022
| (in millions)
Compensation cost recognized in income | $ | 30 |  |  | $ | 30 |  |  | $ | 26 |
Tax benefit of compensation cost recognized in income | 8 |  |  | 8 |  |  | 7 |
Southern Company's total intrinsic value of options exercised and the related tax benefit for the years ended December 31, 2024, 2023, and 2022 were as follows:
| 2024 |  | 2023 |  | 2022
| (in millions)
Intrinsic value of options exercised | $ | 10 |  |  | $ | 18 |  |  | $ | 49 |
Tax benefit of options exercised | 2 |  |  | 4 |  |  | 12 |

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