XML 98 R80.htm IDEA: XBRL DOCUMENT v3.22.4
Insurance Claim Reserves (Details) - Historical Claim Duration
Dec. 31, 2022
Business Insurance [Member] | General liability [Member]  
Historical Claims Duration  
Short-duration Insurance Contracts, Historical Claims Duration, Year One 3.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two 11.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three 17.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four 18.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five 13.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six 10.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven 6.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight 3.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine 1.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten 1.60%
Business Insurance [Member] | Commercial property [Member]  
Historical Claims Duration  
Short-duration Insurance Contracts, Historical Claims Duration, Year One 54.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two 32.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three 4.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four 1.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five 0.40%
Business Insurance [Member] | Commercial multi-peril [Member]  
Historical Claims Duration  
Short-duration Insurance Contracts, Historical Claims Duration, Year One 36.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two 22.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three 10.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four 9.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five 6.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six 3.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven 2.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight 1.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine 0.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten 0.70%
Business Insurance [Member] | Automobile [Member]  
Historical Claims Duration  
Short-duration Insurance Contracts, Historical Claims Duration, Year One 27.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two 18.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three 16.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four 14.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five 10.70%
Business Insurance [Member] | Workers' compensation [Member]  
Historical Claims Duration  
Short-duration Insurance Contracts, Historical Claims Duration, Year One 18.40%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two 19.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three 11.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four 7.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five 4.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six 3.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven 2.40%
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight 1.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine 1.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten 1.20%
Bond & Specialty Insurance [Member] | General liability [Member]  
Historical Claims Duration  
Short-duration Insurance Contracts, Historical Claims Duration, Year One 7.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two 21.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three 19.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four 15.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five 10.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six 7.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven 4.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight 1.50%
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine 2.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten 12.30%
Bond & Specialty Insurance [Member] | Fidelity and surety [Member]  
Historical Claims Duration  
Short-duration Insurance Contracts, Historical Claims Duration, Year One 21.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two 29.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three 14.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four 2.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five 3.70%
Personal Insurance [Member] | Automobile [Member]  
Historical Claims Duration  
Short-duration Insurance Contracts, Historical Claims Duration, Year One 57.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two 21.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three 9.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four 5.50%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five 3.20%
Personal Insurance [Member] | Homeowners (excluding Other) [Member]  
Historical Claims Duration  
Short-duration Insurance Contracts, Historical Claims Duration, Year One 67.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two 25.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three 1.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four 0.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five 0.60%
Personal Insurance [Member] | International - Canada [Member] | Property-casualty [Member]  
Historical Claims Duration  
Short-duration Insurance Contracts, Historical Claims Duration, Year One 45.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two 17.50%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three 7.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four 7.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five 6.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six 4.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven 3.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight 2.40%
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine 1.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten 0.40%