Schedule III - Supplementary Insurance Information

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]

Schedule III - Supplementary Insurance Information

Schedule III

W. R. Berkley Corporation and Subsidiaries

Supplementary Insurance Information

December 31, 2019, 2018 and 2017

(In thousands)	Deferred Policy Acquisition Cost		Reserve for Losses and Loss Expenses		Unearned Premiums		Net Premiums Earned		Net Investment Income		Loss and Loss Expenses		Amortization of Deferred Policy Acquisition Cost		Other Operating Costs and Expenses		Net Premiums Written
December 31, 2019
Insurance	$	438,082	$	9,836,950	$	3,304,152	$	5,919,819	$	429,405	$	3,692,551	$	840,333	$	1,049,328	$	6,086,009
Reinsurance & Monoline Excess	79,282		2,746,299		352,355		713,469		164,082		438,565		161,278		88,520		777,490
Corporate, other and eliminations	—		—		—		—		52,127		—		—		222,623		—
Total	$	517,364	$	12,583,249	$	3,656,507	$	6,633,288	$	645,614	$	4,131,116	$	1,001,611	$	1,360,471	$	6,863,499
December 31, 2018
Insurance	$	432,568	$	9,278,729	$	3,081,433	$	5,702,073	$	433,490	$	3,566,358	$	788,508	$	1,136,269	$	5,791,905
Reinsurance & Monoline Excess	65,061		2,687,719		278,558		669,432		179,534		408,344		126,738		112,885		641,322
Corporate, other and eliminations	—		—		—		—		61,211		—		—		218,821		—
Total	$	497,629	$	11,966,448	$	3,359,991	$	6,371,505	$	674,235	$	3,974,702	$	915,246	$	1,467,975	$	6,433,227
December 31, 2017
Insurance	$	428,535	$	8,858,926	$	2,987,805	$	5,549,403	$	366,862	$	3,469,175	$	908,746	$	1,001,463	$	5,555,515
Reinsurance & Monoline Excess	79,014		2,811,482		302,375		762,016		160,462		533,173		202,743		69,431		704,993
Corporate, other and eliminations	—		—		—		—		48,464		—		—		254,549		—
Total	$	507,549	$	11,670,408	$	3,290,180	$	6,311,419	$	575,788	$	4,002,348	$	1,111,489	$	1,325,443	$	6,260,508

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See Report of Independent Registered Public Accounting Firm.