v3.25.2
SIGNIFICANT ACCOUNTING MATTERS - Earnings per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Accounting Policies [Abstract]        
Earnings Attributable to AEP Common Shareholders, Basic $ 1,225.8 $ 340.3 $ 2,026.0 $ 1,343.4
Earnings Attributable to AEP Common Shareholders, Diluted $ 1,225.8 $ 340.3 $ 2,026.0 $ 1,343.4
Weighted-Average Number of Basic AEP Common Shares Outstanding (in shares) 534,283,554 528,898,816 533,839,985 527,725,426
Weighted-Average Number of Basic AEP Common Shares Outstanding (in dollars per share) $ 2.29 $ 0.64 $ 3.80 $ 2.55
Weighted-Average Dilutive Effect (in shares) 2,100,000 1,200,000 1,700,000 1,200,000
Weighted-Average Dilutive Effect (in dollars per share) $ 0 $ 0 $ (0.02) $ (0.01)
Weighted-Average Number of Diluted AEP Common Shares Outstanding (in shares) 536,425,635 530,140,990 535,547,029 528,868,693
Weighted-Average Number of Diluted AEP Common Shares Outstanding (in dollars per share) $ 2.29 $ 0.64 $ 3.78 $ 2.54