Reserve for Loss and Loss Expense (Tables)

6 Months Ended

Jun. 30, 2024

Insurance Loss Reserves [Abstract]

Schedule of Roll Forward of Reserve for Loss and Loss Expense

The table below provides a roll forward of the reserve for loss and loss expense for beginning and ending reserve balances:

	Six Months ended June 30,
($ in thousands)	2024		2023
Gross reserve for loss and loss expense, at beginning of period	$	5,336,911	5,144,821
Less: reinsurance recoverable on unpaid loss and loss expense, at beginning of period	618,601		757,513
Net reserve for loss and loss expense, at beginning of period	4,718,310		4,387,308
Incurred loss and loss expense for claims occurring in the:
Current year	1,442,719		1,221,635
Prior years	187,121		(8,067)
Total incurred loss and loss expense	1,629,840		1,213,568
Paid loss and loss expense for claims occurring in the:
Current year	347,501		320,026
Prior years	753,658		720,314
Total paid loss and loss expense	1,101,159		1,040,340
Net reserve for loss and loss expense, at end of period	5,246,991		4,560,536
Add: Reinsurance recoverable on unpaid loss and loss expense, at end of period	656,534		616,487
Gross reserve for loss and loss expense, at end of period	$	5,903,525	5,177,023