XML 90 R73.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Liability for Losses and Loss Expenses - Supplementary Information About Average Historical Claims Duration (Detail)
Dec. 31, 2019
Personal Automobile [Member]  
Claims Development [Line Items]  
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 1 64.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 2 17.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 3 8.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 4 4.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 5 2.70%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 6 0.90%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 7 0.20%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 8 0.30%
Homeowners [Member]  
Claims Development [Line Items]  
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 1 81.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 2 15.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 3 1.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 4 0.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 5 0.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 6 0.20%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 7 0.10%
Commercial Automobile [Member]  
Claims Development [Line Items]  
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 1 44.00%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 2 18.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 3 13.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 4 11.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 5 6.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 6 2.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 7 1.20%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 8 0.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 9 0.70%
Commercial MultiPeril [Member]  
Claims Development [Line Items]  
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 1 47.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 2 17.00%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 3 10.20%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 4 10.00%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 5 6.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 6 3.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 7 1.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 8 1.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 9 0.20%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 10 0.70%
Workers Compensation [Member]  
Claims Development [Line Items]  
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 1 29.90%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 2 31.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 3 16.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 4 8.20%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 5 4.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 6 2.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 7 1.40%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 8 0.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year 9 0.70%