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Claim and Claim Adjustment Expense Reserves (Tables)
9 Months Ended
Sep. 30, 2025
Insurance [Abstract]  
Schedule of Reconciliation of Claim and Claim Adjustment Expense Reserves
The following table presents a reconciliation between beginning and ending claim and claim adjustment expense reserves.

Nine Months Ended September 30
20252024
(In millions)  
   
Reserves, beginning of year:  
Gross$24,976 $23,304 
Ceded5,713 5,141 
Net reserves, beginning of year19,263 18,163 
 
Net incurred claim and claim adjustment expenses:
Provision for insured events of current year5,011 4,706 
Increase (decrease) in provision for insured events of prior years191 26 
Amortization of discount29 30 
Total net incurred (a)
5,231 4,762 
 
Net payments attributable to:
Current year events(659)(655)
Prior year events(3,463)(3,189)
Total net payments(4,122)(3,844)
 
Foreign currency translation adjustment and other165 35 
 
Net reserves, end of period20,537 19,116 
Ceded reserves, end of period5,988 5,442 
Gross reserves, end of period$26,525 $24,558 

(a)Total net incurred does not agree to Insurance claims and policyholders’ benefits as reflected on the Consolidated Condensed Statements of Operations due to amounts related to retroactive reinsurance deferred gain accounting, uncollectible reinsurance and benefit expenses related to future policy benefits and policyholders’ dividends, which are not reflected in the table above.
Schedule of Net Prior Year Loss Reserve Development in Property and Casualty Operations
The following table and discussion present details of the net prior year loss reserve development in Property & Casualty Operations and Other Insurance Operations:

Three Months EndedNine Months Ended
September 30,September 30,
2025202420252024
(In millions)  
   
Medical professional liability$(2)
Other professional liability and management liability$25 $11 $43 28 
Surety(25)(20)(47)(46)
Warranty10 20 
Commercial auto25 50 46 
General liability28 62 47 
Workers’ compensation(1)(57)(66)(106)
Other property and casualty operations4 (11)
Total property & casualty operations(1)(5)56 (24)
Other insurance operations 22 134 57 
Total pretax (favorable) unfavorable development$(1)$17 $190 $33