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Schedule VI - Supplementary Information Concerning Property-Casualty Insurance Operations
 12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Abstract]  
Schedule VI - Supplementary Information Concerning Property-Casualty Insurance Operations
Schedule VI

W. R. Berkley Corporation and Subsidiaries
Supplementary Information Concerning Property-Casualty Insurance Operations
Years Ended December 31, 2024, 2023 and 2022
(In thousands)202420232022
Deferred policy acquisition costs$951,728 $861,609 $763,486 
Reserves for losses and loss expenses20,368,030 18,739,652 17,011,223 
Unearned premiums6,375,112 5,922,326 5,297,654 
Net premiums earned11,548,485 10,400,687 9,561,429 
Net investment income1,333,161 1,052,835 779,185 
Losses and loss expenses incurred:
Current year7,083,999 6,311,780 5,774,713 
Prior years14,350 29,681 54,511 
Loss reserve discount accretion33,246 30,681 32,526 
Amortization of deferred policy acquisition costs1,219,849 1,038,975 1,038,903 
Paid losses and loss expenses5,484,430 4,981,610 4,347,910 
Net premiums written11,972,096 10,954,467 10,004,070 
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See Report of Independent Registered Public Accounting Firm.