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Average Annual Payout (Details)
Dec. 31, 2022
Commercial Insurance | Commercial Casualty Line  
Short-duration Insurance Contracts, Historical Claims Duration  
1 6.90%
2 14.00%
3 18.90%
4 18.70%
5 13.50%
6 8.40%
7 5.10%
8 3.80%
9 2.70%
10 2.40%
Commercial Insurance | Workers' Compensation Line  
Short-duration Insurance Contracts, Historical Claims Duration  
1 24.80%
2 25.40%
3 11.20%
4 6.10%
5 3.80%
6 2.20%
7 1.30%
8 1.00%
9 1.30%
10 0.90%
Commercial Insurance | Commercial Auto Line  
Short-duration Insurance Contracts, Historical Claims Duration  
1 39.40%
2 18.30%
3 15.60%
4 11.10%
5 7.80%
Commercial Insurance | Commercial Property Line  
Short-duration Insurance Contracts, Historical Claims Duration  
1 61.10%
2 27.20%
3 3.60%
4 2.00%
5 0.40%
Personal Insurance | Personal Auto  
Short-duration Insurance Contracts, Historical Claims Duration  
1 65.20%
2 16.10%
3 8.20%
4 4.90%
5 2.80%
Personal Insurance | Home Owner Line  
Short-duration Insurance Contracts, Historical Claims Duration  
1 65.80%
2 24.20%
3 3.50%
4 0.90%
5 0.70%
Excess and Surplus Lines Insurance  
Short-duration Insurance Contracts, Historical Claims Duration  
1 11.30%
2 13.70%
3 18.10%
4 16.10%
5 12.70%
6 9.10%
7 5.20%
8 3.30%
9 1.70%
10 2.80%