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Condensed Statements of Comprehensive Income (Unaudited) - APC - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Net income $ 1,356 $ 1,334
Qualifying hedges:    
Reclassification adjustment for amounts included in net income, net of tax 4 (12)
Consolidated Comprehensive Income Attributable to Company 1,358 1,337
Alabama Power    
Net income 425 375
Qualifying hedges:    
Reclassification adjustment for amounts included in net income, net of tax 0 1
Total other comprehensive income (loss) 0 1
Consolidated Comprehensive Income Attributable to Company $ 425 $ 376