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Condensed Statements of Comprehensive Income (Unaudited) - GPC (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Changes in fair value, tax $ (5) $ (1) $ 12 $ (2)
Qualifying hedges, reclassification adjustment, tax 2 (2) (12) 14
GEORGIA POWER CO        
Changes in fair value, tax 0 0 1 4
Qualifying hedges, reclassification adjustment, tax $ 0 $ 0 $ 0 $ 1