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FINANCING - Maturities of Long-Term Debt (Details) $ in Millions | Dec. 31, 2023 USD ($)
--- | ---
Debt Instrument [Line Items] |
2024 | $ 2,480
2025 | 4,124
2026 | 3,791
2027 | 2,075
2028 | 2,612
Alabama Power |
Debt Instrument [Line Items] |
2024 | 223
2025 | 251
2026 | 46
2027 | 551
2028 | 107
Alabama Power | Series 2023A Convertible Senior Notes Due 2025 |
Debt Instrument [Line Items] |
2024 | 200
Georgia Power |
Debt Instrument [Line Items] |
2024 | 503
2025 | 849
2026 | 448
2027 | 512
2028 | 864
Mississippi Power |
Debt Instrument [Line Items] |
2024 | 201
2025 | 12
2026 | 66
2027 | 10
2028 | 357
Southern Power |
Debt Instrument [Line Items] |
2024 | 0
2025 | 500
2026 | 964
2027 | 0
2028 | 0
Southern Power | Euro-denominated Debt |
Debt Instrument [Line Items] |
2028 | 564
Southern Company Gas |
Debt Instrument [Line Items] |
2024 | 0
2025 | 300
2026 | 530
2027 | 154
2028 | $ 150

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