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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - SWEPCo - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Net Income $ 747 $ 1,289 $ 1,650 $ 2,091
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAXES        
Cash Flow Hedges, Net of Tax 22 (33) 7 (10)
Amortization of Pension and OPEB Deferred Costs, Net of Tax 1 0 2 1
TOTAL COMPREHENSIVE INCOME 770 1,256 1,659 2,082
Total Comprehensive Income Attributable to Noncontrolling Interest 34 63 63 65
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS 736 1,193 1,596 2,017
SOUTHWESTERN ELECTRIC POWER COMPANY        
Net Income 86 117 143 166
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAXES        
Cash Flow Hedges, Net of Tax 0 0 0 0
Amortization of Pension and OPEB Deferred Costs, Net of Tax 0 0 0 0
TOTAL COMPREHENSIVE INCOME 86 117 143 166
Total Comprehensive Income Attributable to Noncontrolling Interest 0 1 1 2
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS $ 86 $ 116 $ 142 $ 164