v3.26.3
Reinsurance (Tables)
 9 Months Ended
Sep. 30, 2026
Reinsurance Disclosures [Abstract]  
Reinsurance Recoverable, Credit Quality Indicator [Table Text Block]
Reinsurance Recoverables by Credit Quality Indicator
As of September 30, 2026As of December 31, 2025
P&C
Employee Benefits
CorporateTotal
P&C
Employee Benefits
CorporateTotal
A.M. Best Financial Strength Rating
A++$683 $— $— $683 $2,161 $— $— $2,161 
A+2,264 312 205 2,781 2,292 286 213 2,791 
A691 1 — 692 764 1 — 765 
A-585 3 — 588 603 3 2 608 
B++2 — 2 4 2 — — 2 
Below B++22 — — 22 21 — — 21 
Total Rated by A.M. Best
4,247 316 207 4,770 5,843 290 215 6,348 
Mandatory (Assigned) and Voluntary Risk Pools191 — — 191 204 — — 204 
Captives484 — — 484 465 — — 465 
Other not rated companies222 6 — 228 238 5 — 243 
Gross Reinsurance Recoverables
5,144 322 207 5,673 6,750 295 215 7,260 
Allowance for uncollectible reinsurance
(69)(1)(2)(72)(66)(1)(2)(69)
Net Reinsurance Recoverables
$5,075 $321 $205 $5,601 $6,684 $294 $213 $7,191 
Reinsurance Recoverable, Allowance for Credit Loss [Table Text Block]
Allowance for Uncollectible Reinsurance
Three Months Ended September 30,Nine Months Ended September 30,
2026202520262025
P&C beginning allowance for uncollectible reinsurance$67 $72 $66 $72 
Beginning allowance for disputed amounts44 51 42 48 
P&C beginning ACL23 21 24 24 
Current period provision (release)2 1 1 (2)
Current period gross write-offs— — — — 
P&C ending ACL25 22 25 22 
Ending allowance for disputed amounts44 51 44 51 
P&C ending allowance for uncollectible reinsurance69 73 69 73 
Employee Benefits allowance for uncollectible reinsurance1 1 1 1 
Corporate allowance for uncollectible reinsurance2 2 2 2 
Total allowance for uncollectible reinsurance$72 $76 $72 $76