Condensed Consolidated Statements of Comprehensive Income (Unaudited) - SPC (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 |
| Reclassification adjustment for amounts included in net income, tax | 0 | 1 | 0 | 3 |
| SOUTHERN POWER CO | ||||
| Changes in fair value, tax | (2) | (11) | (3) | (35) |
| Qualifying hedges, reclassification adjustment, tax | 4 | 9 | 6 | 35 |
| Reclassification adjustment for amounts included in net income, tax | $ 0 | $ 0 | $ 0 | $ 0 |