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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Statement of Comprehensive Income [Abstract]            
Net Income $ 747 $ 903 $ 1,289 $ 802 $ 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 OTHER COMPREHENSIVE INCOME (LOSS) 23 $ (14) (33) $ 24 9 (9)
TOTAL COMPREHENSIVE INCOME 770   1,256   1,659 2,082
Total Comprehensive Income Attributable To Noncontrolling Interests 34   63   63 65
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS $ 736   $ 1,193   $ 1,596 $ 2,017