v3.26.3
Premiums Receivable (Tables)
 9 Months Ended
Sep. 30, 2026
Credit Loss [Abstract]  
Premium Receivable, Allowance for Credit Loss [Table Text Block]
Premiums Receivable and Agents' Balances
As of September 30, 2026As of December 31, 2025
Premiums receivable, excluding receivables for losses within a deductible and retrospectively-rated policy premiums ("loss sensitive business")$6,434 $5,948 
Receivables for loss sensitive business, by credit quality:
AA95 98 
A74 76 
BBB198 206 
BB91 89 
Below BB42 41 
Total receivables for loss sensitive business500 510 
Total Premiums Receivable and Agents' Balances, Gross6,934 6,458 
ACL(165)(142)
Total Premiums Receivable and Agents' Balances, Net of ACL$6,769 $6,316 
Rollforward of ACL on Premiums Receivable and Agents' Balances for the Three Months Ended
September 30, 2026September 30, 2025
Receivables Excluding Loss Sensitive BusinessReceivables for Loss Sensitive BusinessTotalReceivables Excluding Loss Sensitive BusinessReceivables for Loss Sensitive BusinessTotal
Beginning ACL$137 $23 $160 $113 $22 $135 
Current period provision23 1 24 23 1 24 
Current period write-offs(20)— (20)(22)— (22)
Current period recoveries1 — 1 1 — 1 
Ending ACL$141 $24 $165 $115 $23 $138 
Rollforward of ACL on Premiums Receivable and Agents' Balances for the Nine Months Ended
September 30, 2026September 30, 2025
Receivables Excluding Loss Sensitive BusinessReceivables for Loss Sensitive BusinessTotalReceivables Excluding Loss Sensitive BusinessReceivables for Loss Sensitive BusinessTotal
Beginning ACL$120 $22 $142 $97 $20 $117 
Current period provision75 3 78 70 3 73 
Current period write-offs(55)(1)(56)(57)— (57)
Current period recoveries1 — 1 5 — 5 
Ending ACL$141 $24 $165 $115 $23 $138