v3.26.3
Reserve for Property and Casualty Insurance Claims and Claims Expense (Tables)
 9 Months Ended
Sep. 30, 2026
Reserve for Property-Liability Insurance Claims and Claims Expense [Abstract]  
Schedule of Rollforward of the Reserve for Property and Casualty Insurance Claims and Claims Expense and Prior Year Reserve Re-Estimates Included in Claims and Claims Expense
Rollforward of the reserve for property and casualty insurance claims and claims expense
Nine months ended September 30,
($ in millions)20262025
Balance as of January 1$41,079 $41,917 
Less: recoverables (1)
8,012 8,602 
Net balance as of January 133,067 33,315 
Incurred claims and claims expense related to:
Current year31,388 30,763 
Prior years(2,398)(1,045)
Total incurred28,990 29,718 
Claims and claims expense paid related to:
Current year(16,587)(16,235)
Prior years(11,975)(12,688)
Total paid(28,562)(28,923)
Net balance as of September 3033,495 34,110 
Plus: recoverables
7,301 8,993 
Balance as of September 30$40,796 $43,103 
(1)Recoverables comprises reinsurance and indemnification recoverables.
Prior year reserve reestimates included in claims and claims expense (1)
Excluding catastrophe lossesCatastrophe
 losses		Total
($ in millions)
202620252026

202520262025
Three months ended September 30,
Auto$(876)$(480)$(8)$(3)$(884)$(483)
Homeowners(68)(40)19 (14)(49)(54)
Specialty lines12 72 — (6)12 66 
Commercial lines(37)(80)(1)(5)(38)(85)
Brokered solutions and collateral protection(10)(14)— — (10)(14)
Run-off Property-Liability (2)
216 146 — — 216 146 
Total prior year reserve reestimates$(763)$(396)$10 $(28)$(753)$(424)
Nine months ended September 30,

Auto$(2,353)$(1,133)$(19)$(30)$(2,372)$(1,163)
Homeowners(194)(35)71 3 (123)(32)
Specialty lines(58)153 22 (11)(36)142 
Commercial lines(65)(104)(1)— (66)(104)
Brokered solutions and collateral protection(17)(39)— — (17)(39)
Run-off Property-Liability (2)
216 151 — — 216 151 
Total prior year reserve reestimates
$(2,471)$(1,007)$73 $(38)$(2,398)$(1,045)
(1)Reserve releases are shown in parentheses.
(2)During the third quarter of 2026 and 2025, the Company’s annual reserve reviews, using established industry and actuarial best practices, resulted in reserve reestimates that increased reserves by $216 million and $146 million, respectively.