v3.26.3
Earnings Per Common Share (EPS) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Numerator for EPS:        
Net income $ 849 $ 524 $ 2,560 $ 2,366
Less: Net income attributable to noncontrolling interests 5 5 5 5
Net income attributable to AIG common shareholders 844 519 2,555 2,361
Net income attributable to AIG common shareholders $ 844 $ 519 $ 2,555 $ 2,361
Denominator for EPS:        
Weighted average common shares outstanding - basic (in shares) 522,963,373 553,308,504 530,133,311 573,176,050
Dilutive common shares (in shares) 4,261,278 5,211,326 4,134,365 5,245,177
Weighted average common shares outstanding - diluted (in shares) 527,224,651 558,519,830 534,267,676 578,421,227
Net income per common share attributable to AIG common shareholders:        
Basic (in dollars per share) $ 1.61 $ 0.94 $ 4.82 $ 4.12
Diluted (in dollars per share) $ 1.60 $ 0.93 $ 4.78 $ 4.08
Number of shares excluded from diluted shares outstanding because the effect would have been anti-dilutive (in shares) 1,115,913 139,655 982,281 140,042