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Property Casualty Loss and Loss Expense - Average Annual Payout (Details) | Dec. 31, 2023
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Commercial Insurance | Commercial Casualty Line |
Short-duration Insurance Contracts, Historical Claims Duration |
1 | 6.40%
2 | 13.70%
3 | 18.90%
4 | 18.40%
5 | 13.80%
6 | 9.10%
7 | 5.70%
8 | 4.00%
9 | 3.50%
10 | 2.10%
Commercial Insurance | Workers' Compensation Line |
Short-duration Insurance Contracts, Historical Claims Duration |
1 | 24.30%
2 | 25.20%
3 | 11.30%
4 | 6.60%
5 | 3.90%
6 | 2.10%
7 | 1.60%
8 | 0.80%
9 | 0.80%
10 | 0.90%
Commercial Insurance | Commercial Auto Line |
Short-duration Insurance Contracts, Historical Claims Duration |
1 | 39.10%
2 | 18.90%
3 | 15.30%
4 | 12.80%
5 | 8.60%
Commercial Insurance | Commercial Property Line |
Short-duration Insurance Contracts, Historical Claims Duration |
1 | 61.10%
2 | 29.70%
3 | 4.50%
4 | 2.00%
5 | 0.00%
Personal Insurance | Personal Auto |
Short-duration Insurance Contracts, Historical Claims Duration |
1 | 65.60%
2 | 16.40%
3 | 8.20%
4 | 5.00%
5 | 2.40%
Personal Insurance | Homeowner |
Short-duration Insurance Contracts, Historical Claims Duration |
1 | 65.80%
2 | 25.80%
3 | 4.10%
4 | 1.60%
5 | 0.60%
Excess and Surplus Lines Insurance |
Short-duration Insurance Contracts, Historical Claims Duration |
1 | 10.10%
2 | 13.20%
3 | 17.40%
4 | 16.20%
5 | 13.10%
6 | 10.40%
7 | 6.30%
8 | 2.70%
9 | 4.30%
10 | 1.10%

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- Definition Percentage of average annual payout, after reinsurance, in the eighth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4G -SubTopic 40 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-4G + Details
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