v3.26.1
Insurance Claim Reserves (Tables)
 3 Months Ended
Mar. 31, 2026
Insurance Loss Reserves [Abstract]  
Claims and claim adjustment expense reserves [Table Text Block]
Claims and claim adjustment expense reserves were as follows:
(in millions)March 31,
2026		December 31,
2025
Property-casualty$66,908 $67,643 
Accident and health4 3 
Less amounts classified as held for sale— 1,909 
Total$66,912 $65,737 
Reconciliation of beginning and ending property casualty reserve balances for claims and claim adjustment expenses [Table Text Block]
The following table presents a reconciliation of beginning and ending property casualty reserve balances for claims and claim adjustment expenses.
Three Months Ended March 31,
(in millions)20262025
Claims and claim adjustment expense reserves at beginning of year$67,643 $64,088 
Less reinsurance recoverables on unpaid losses7,797 7,669 
Net reserves at beginning of year59,846 56,419 
Estimated claims and claim adjustment expenses for claims arising in the current year6,739 8,338 
Estimated decrease in claims and claim adjustment expenses for
 claims arising in prior years
(385)(360)
Total increases6,354 7,978 
Claims and claim adjustment expense payments for claims arising in:  
Current year1,174 1,856 
Prior years4,146 4,415 
Total payments5,320 6,271 
Net reserves disposed of related to the divestiture of the Canadian business(1,627)— 
Unrealized foreign exchange (gain) loss(32)59 
Net reserves at end of period59,221 58,185 
Plus reinsurance recoverables on unpaid losses7,687 7,787 
Claims and claim adjustment expense reserves at end of period$66,908 $65,972