XML 111 R87.htm IDEA: XBRL DOCUMENT v3.24.0.1
RESERVE FOR LOSSES AND LOSS EXPENSES - Reserve Roll-forward (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Reconciliation of Beginning and Ending Gross Unpaid Losses and Loss Expenses      
Gross reserve for losses and loss expenses, beginning of year $ 15,168,863 $ 14,653,094 $ 13,926,766
Less reinsurance recoverable on unpaid losses and loss expenses, beginning of year (5,831,172) (5,017,611) (4,496,641)
Net reserve for unpaid losses and loss expenses, beginning of year 9,337,691 9,635,483 9,430,125
Net incurred losses and loss expenses related to:      
Current year 2,981,220 3,267,943 3,041,193
Prior years 411,882 (25,533) (32,410)
Net incurred losses and loss expenses 3,393,102 3,242,410 3,008,783
Net paid losses and loss expenses related to:      
Current year (488,016) (457,857) (490,011)
Prior years (2,185,588) (2,397,213) (2,274,240)
Net paid losses and loss expenses (2,673,604) (2,855,070) (2,764,251)
Foreign exchange and other 53,746 (685,132) (39,174)
Net reserve for unpaid losses and loss expenses, end of year 10,110,935 9,337,691 9,635,483
Reinsurance recoverable on unpaid losses and loss expenses, end of year 6,323,083 5,831,172 5,017,611
Gross reserve for losses and loss expenses, end of year $ 16,434,018 $ 15,168,863 $ 14,653,094