Consolidated Balance Sheets Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Investments:
Fixed maturity securities (amortized cost of $19,104,348 and $18,715,483; allowance for expected credit losses of $44,301 and $37,466 at June 30, 2023 and December 31, 2022, respectively)	$ 18,055,623	$ 17,587,349
Investment funds	1,594,225	1,608,548
Real estate	1,292,200	1,340,622
Equity securities	1,239,712	1,185,894
Arbitrage trading account	723,967	944,230
Loans receivable (net of allowance for expected credit losses of $4,550 and $1,791 at June 30, 2023 and December 31, 2022, respectively)	181,562	193,002
Total investments	23,087,289	22,859,645
Cash and cash equivalents	1,823,558	1,449,346
Premiums and fees receivable (net of allowance for expected credit losses of $32,770 and $30,660 at June 30, 2023 and December 31, 2022, respectively)	3,042,864	2,779,244
Due from reinsurers (net of allowance for expected credit losses of $9,365 and $8,064 at June 30, 2023 and December 31, 2022, respectively)	3,444,721	3,187,730
Deferred policy acquisition costs	830,315	763,486
Prepaid reinsurance premiums	753,094	696,468
Trading account receivables from brokers and clearing organizations	484,457	233,863
Property, furniture and equipment	421,049	423,232
Goodwill	174,597	185,509
Accrued investment income	184,729	166,784
Current and deferred federal and foreign income taxes	313,837	333,774
Other assets	748,184	736,022
Total assets	35,308,694	33,815,103
Liabilities:
Reserves for losses and loss expenses	17,919,996	17,011,223
Unearned premiums	5,698,478	5,297,654
Due to reinsurers	598,162	523,131
Other liabilities	1,347,896	1,377,740
Senior notes and other debt	1,827,080	1,828,823
Subordinated debentures	1,008,730	1,008,371
Total liabilities	28,400,342	27,046,942
Equity:
Perferred stock, par value $.10 per share: Authorized 5,000,000 shares; issued and outstanding - none	0	0
Common stock, par value $.20 per share: Authorized 500,000,000 shares, issued and outstanding, net of treasury shares, 177,930,502 and 183,411,907 shares, respectively	105,803	105,803
Additional paid-in capital	1,020,818	997,534
Retained earnings	10,624,518	10,161,005
Accumulated other comprehensive loss	(1,181,673)	(1,264,581)
Treasury stock, at cost, 271,498,056 and 264,468,528 shares, respectively	(3,682,281)	(3,251,429)
Total stockholders’ equity	6,887,185	6,748,332
Noncontrolling interests	21,167	19,829
Total equity	6,908,352	6,768,161
Total liabilities and equity	$ 35,308,694	$ 33,815,103