Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2023

Assets And Liabilities Measured At Fair value, On A Recurring Basis

The following tables present the assets and liabilities measured at fair value as of December 31, 2023 and 2022 by level:


(In thousands)	Total		Level 1		Level 2		Level 3
December 31, 2023
Assets:
Fixed maturity securities available for sale:
U.S. government and government agency	$	1,716,731	$	—	$	1,716,731	$	—
State and municipal	2,634,422		—		2,634,422		—
Mortgage-backed securities	2,266,455		—		2,266,455		—
Asset-backed securities	4,187,040		—		4,187,040		—
Corporate	7,654,059		—		7,654,059		—
Foreign government	1,666,229		—		1,666,229		—
Total fixed maturity securities available for sale	20,124,936		—		20,124,936		—
Equity securities:
Common stocks	838,054		835,338		1,158		1,558
Preferred stocks	252,293		—		248,598		3,695
Total equity securities	1,090,347		835,338		249,756		5,253
Arbitrage trading account	938,049		546,110		388,167		3,772

Total	$	22,153,332	$	1,381,448	$	20,762,859	$	9,025
Liabilities:
Trading account securities sold but not yet purchased	$	9,357	$	9,357	$	—	$	—

December 31, 2022
Assets:
Fixed maturity securities available for sale:
U.S. government and government agency	$	892,258	$	—	$	892,258	$	—
State and municipal	2,890,098		—		2,890,098		—
Mortgage-backed securities	1,665,410		—		1,665,410		—
Asset-backed securities	3,982,773		—		3,982,773		—
Corporate	6,703,992		—		6,703,992		—
Foreign government	1,401,522		—		1,401,522		—
Total fixed maturity securities available for sale	17,536,053		—		17,536,053		—
Equity securities:
Common stocks	982,751		978,991		1,161		2,599
Preferred stocks	203,143		—		191,844		11,299
Total equity securities	1,185,894		978,991		193,005		13,898
Arbitrage trading account	944,230		822,192		118,448		3,590
Total	$	19,666,177	$	1,801,183	$	17,847,506	$	17,488
Liabilities:
Trading account securities sold but not yet purchased	$	—	$	—	$	—	$	—

Summarize Changes In Level 3 Assets and Liabilities

The following tables summarize changes in Level 3 assets and liabilities for the years ended December 31, 2023 and 2022:


	Gains (Losses) Included in:
(In thousands)	Beginning Balance		Earnings (Losses)		Other Comprehensive Income (Losses)		Impairments		Purchases		Sales		Paydowns/Maturities		Transfers In / Out		Ending Balance
Year ended December 31, 2023
Assets:
Fixed maturity securities available for sale:

Corporate	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Total	—		—		—		—		—		—		—		—		—
Equity securities:
Common stocks	2,599		(1,041)		—		—		—		—		—		—		1,558
Preferred stocks	11,299		(3)		—		(7,601)		—		—		—		—		3,695
Total	13,898		(1,044)		—		(7,601)		—		—		—		—		5,253
Arbitrage trading account	3,590		117		—		—		—		—		—		65		3,772
Total	$	17,488	$	(927)	$	—	$	(7,601)	$	—	$	—	$	—	$	65	$	9,025
Liabilities:
Trading account securities sold but not yet purchased	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—

Year ended December 31, 2022
Assets:
Fixed maturity securities available for sale:

Corporate	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Total	—		—		—		—		—		—		—		—		—
Equity securities:
Common stocks	9,294		(6,695)		—		—		—		—		—		—		2,599
Preferred stocks	11,296		3		—		—		925		(925)		—		—		11,299
Total	20,590		(6,692)		—		—		925		(925)		—		—		13,898
Arbitrage trading account	—		(179)		—		—		4,686		(917)		—		—		3,590
Total	$	20,590	$	(6,871)	$	—	$	—	$	5,611	$	(1,842)	$	—	$	—	$	17,488
Liabilities:
Trading account securities sold but not yet purchased	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—