v3.26.3
Segment Information - Schedule of Continuing Operations by Operating Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Net Premiums Earned $ 6,453 $ 6,073 $ 18,746 $ 17,720
Loss and Loss Adjustment Expenses Incurred 4,023 3,391 11,082 10,678
Amortization of DAC 934 850 2,658 2,522
General Operating Expense 1,266 1,297 3,634 3,574
Net Investment Income 1,100 772 2,939 3,343
Income before income tax expense 1,119 714 3,370 3,218
Interest expense 101 99 301 291
Changes in the fair values of equity securities and AIG's investment in Corebridge (3) (288) (67) 393
Other income (expense) - net 2   5  
Gain on extinguishment of debt 0 0 0 5
Realized gains (losses) (110) (490) (510) (851)
Net realized losses, net investment income 0 (2) 0 (4)
Net realized losses, reconciliation to income (loss) from continuing operations before income tax expense (170) (433) (514) (690)
Net gain (loss) on divestitures and other 0 0 (133) 53
Non-operating litigation reserves and settlements       13
(Unfavorable) favorable prior year development and related amortization changes ceded under retroactive reinsurance agreements   9 75 (53)
Net loss reserve discount benefit (charge) (91) 2 (71) (27)
Net results of businesses in run-off 10 9 28 22
Net results of businesses in run-off, net investment income, reconciliation to income (loss) from continuing operations before income tax expense (12) 1 (18) 8
Non-operating pension expenses   (6) 2 (16)
Integration and transaction costs associated with acquiring or divesting businesses (20) (7) (68) (13)
Restructuring and other costs $ (100) $ (153) $ (247) $ (307)
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] General Operating Expense General Operating Expense General Operating Expense General Operating Expense
Non-recurring costs related to regulatory or accounting changes $ (3) $ (3) $ (13) $ (10)
Fortitude Re funds withheld assets        
Segment Reporting [Line Items]        
Net Investment Income 16 29 75 108
Realized gains (losses) (28) (5) (47) (59)
Fortitude Re funds withheld embedded derivative        
Segment Reporting [Line Items]        
Realized gains (losses) 85 (54) 44 (109)
Total        
Segment Reporting [Line Items]        
Net Investment Income 1,075 1,024 2,898 2,824
Income before income tax expense 1,445 1,622 4,352 3,922
Reportable Segments        
Segment Reporting [Line Items]        
Net Premiums Written 6,651 6,230 19,766 17,636
Net Premiums Earned 6,435 6,040 18,683 17,687
Loss and Loss Adjustment Expenses Incurred 3,903 3,379 11,017 10,573
Amortization of DAC 928 851 2,640 2,522
Other Acquisition Expenses 242 237 695 670
General Operating Expense 798 780 2,307 2,260
Underwriting Income (Loss) 564 793 2,024 1,662
Net Investment Income 1,032 945 2,767 2,552
Income before income tax expense 1,586 1,734 4,760 4,201
Interest expense (101) (100) (300) (292)
Amortization of intangible assets and renewal rights (10) (4) (31) (13)
Other Operations        
Segment Reporting [Line Items]        
Net Investment Income 45 77 133 273
Income before income tax expense (40) (14) (108) 13
Elimination and consolidations        
Segment Reporting [Line Items]        
Net Investment Income (2) 2 (2) (1)
Income before income tax expense 0 2   0
North America Commercial | Reportable Segments        
Segment Reporting [Line Items]        
Net Premiums Written 2,481 2,435 7,211 6,472
Net Premiums Earned 2,362 2,198 6,939 6,455
Loss and Loss Adjustment Expenses Incurred 1,641 1,303 4,472 4,169
Amortization of DAC 242 221 703 654
Other Acquisition Expenses 54 44 160 137
General Operating Expense 258 246 738 681
Underwriting Income (Loss) 167 384 866 814
International Commercial | Reportable Segments        
Segment Reporting [Line Items]        
Net Premiums Written 2,387 2,115 7,425 6,467
Net Premiums Earned 2,407 2,188 6,866 6,363
Loss and Loss Adjustment Expenses Incurred 1,388 1,167 3,978 3,515
Amortization of DAC 324 285 906 799
Other Acquisition Expenses 92 96 279 274
General Operating Expense 320 310 942 905
Underwriting Income (Loss) 283 330 761 870
Global Personal | Reportable Segments        
Segment Reporting [Line Items]        
Net Premiums Written 1,783 1,680 5,130 4,697
Net Premiums Earned 1,666 1,654 4,878 4,869
Loss and Loss Adjustment Expenses Incurred 874 909 2,567 2,889
Amortization of DAC 362 345 1,031 1,069
Other Acquisition Expenses 96 97 256 259
General Operating Expense 220 224 627 674
Underwriting Income (Loss) $ 114 $ 79 $ 397 $ (22)