XML 59 R47.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Unpaid Losses And Loss Adjustment Expenses (Reconciliation Of Consolidated Reserves For Losses And Loss Adjustment Expenses) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract]    
Gross reserves for losses and loss adjustment expenses, beginning of year $ 23,483,321 $ 20,947,898
Reinsurance recoverable on unpaid losses, beginning of year 8,820,567 7,994,884
Net reserves for losses and loss adjustment expenses, beginning of year 14,662,754 12,953,014
Effect of foreign currency rate changes on beginning of year balance (33,620) 36,637
Adjusted net reserves for losses and loss adjustment expenses, beginning of year 14,629,134 12,989,651
Incurred losses and loss adjustment expenses, current accident years 1,364,770 1,244,331
Incurred losses and loss adjustment expenses, prior accident years (77,023) (71,317)
Total incurred losses and loss adjustment expenses 1,287,747 1,173,014
Payments, current accident year 75,509 72,167
Payments, prior accident years 819,185 708,115
Total payments 894,694 780,282
Effect of foreign currency rate changes on current year activity (1,018) (3,649)
Net reserves for losses and loss adjustment expenses of Markel CATCo Re (16,338) (115,141)
Reinsurance recoverable for retroactive reinsurance transaction 0 (125,067)
Net reserves for losses and loss adjustment expenses, end of period 15,004,831 13,138,526
Reinsurance recoverable on unpaid losses 9,140,124 8,168,267
Gross reserves for losses and loss adjustment expenses, end of period $ 24,144,955 $ 21,306,793