Condensed Consolidated Statements of Comprehensive Income (Unaudited) - GAS (Parenthetical) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2023 |
Sep. 30, 2022 |
Sep. 30, 2023 |
Sep. 30, 2022 |
|
| Changes in fair value, tax | $ 3 | $ 2 | $ (11) | $ (5) |
| Qualifying hedges, reclassification adjustment, tax | 12 | 8 | 25 | 32 |
| SOUTHERN Co GAS | ||||
| Changes in fair value, tax | (2) | 8 | (11) | 16 |
| Qualifying hedges, reclassification adjustment, tax | $ 7 | $ (2) | $ 15 | $ (7) |