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Schedule VI - Supplementary Information Concerning Property-Casualty Insurance Operations
 12 Months Ended
Dec. 31, 2021
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, 2021, 2020 and 2019
(In thousands)202120202019
Deferred policy acquisition costs$676,145 $556,168 $517,364 
Reserves for losses and loss expenses15,390,888 13,784,430 12,583,249 
Unearned premiums4,847,160 4,073,191 3,656,507 
Net premiums earned8,106,031 6,930,843 6,633,288 
Net investment income671,618 583,821 645,614 
Losses and loss expenses incurred:
Current year4,921,191 4,432,937 4,057,989 
Prior years863 627 34,079 
Loss reserve discount accretion31,906 35,142 39,048 
Amortization of deferred policy acquisition costs961,628 904,955 1,001,611 
Paid losses and loss expenses3,665,694 3,598,649 3,659,402 
Net premiums written8,862,867 7,262,437 6,863,499 
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See Report of Independent Registered Public Accounting Firm.