Consolidated Statements Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
REVENUES:
Net premiums written	$ 2,577,274	$ 2,325,138	$ 7,576,163	$ 6,587,357
Change in net unearned premiums	(135,313)	(244,120)	(527,958)	(684,759)
Net premiums earned	2,441,961	2,081,018	7,048,205	5,902,598
Net investment income	202,816	179,851	547,902	506,615
Net realized and unrealized (losses) gains on investments	(66,282)	17,187	139,664	89,407
Change in allowance for expected credit losses on investments	(1,128)	2,314	(12,365)	(11,003)
Net investment (losses) gains	(67,410)	19,501	127,299	78,404
Revenues from non-insurance businesses	119,013	120,374	345,210	316,927
Insurance service fees	27,940	21,467	82,284	69,531
Other income	80	2,072	1,797	3,163
Total revenues	2,724,400	2,424,283	8,152,697	6,877,238
OPERATING COSTS AND EXPENSES:
Losses and loss expenses	1,564,578	1,298,392	4,339,646	3,623,630
Other operating costs and expenses	725,537	643,045	2,139,256	1,907,020
Expenses from non-insurance businesses	116,240	115,465	334,062	308,453
Interest expense	31,780	35,100	98,473	109,846
Total operating costs and expenses	2,438,135	2,092,002	6,911,437	5,948,949
Income before income taxes	286,265	332,281	1,241,260	928,289
Income tax expense	(55,791)	(64,963)	(238,290)	(191,577)
Net income before noncontrolling interests	230,474	267,318	1,002,970	736,712
Noncontrolling interests	(1,595)	(6,021)	(4,131)	(8,652)
Net income to common stockholders	$ 228,879	$ 261,297	$ 998,839	$ 728,060
NET INCOME PER SHARE:
Basic (in dollar per share)	$ 0.83	$ 0.94	$ 3.61	$ 2.62
Diluted (in dollar per share)	$ 0.82	$ 0.93	$ 3.57	$ 2.59