Consolidated Statements Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
REVENUES:
Net premiums written	$ 2,585,635	$ 2,212,181	$ 4,998,889	$ 4,262,219
Change in net unearned premiums	(228,477)	(240,557)	(392,645)	(440,639)
Net premiums earned	2,357,158	1,971,624	4,606,244	3,821,580
Net investment income	171,574	168,187	345,086	326,764
Net realized and unrealized (losses) gains on investments	(163,935)	20,461	205,947	72,219
Change in allowance for expected credit losses on investments	(7,620)	3,603	(11,237)	(13,316)
Net investment (losses) gains	(171,555)	24,064	194,710	58,903
Revenues from non-insurance businesses	128,421	109,122	226,197	196,552
Insurance service fees	26,393	22,256	54,344	48,064
Other income	896	833	1,716	1,092
Total revenues	2,512,887	2,296,086	5,428,297	4,452,955
OPERATING COSTS AND EXPENSES:
Losses and loss expenses	1,435,817	1,203,647	2,775,069	2,325,238
Other operating costs and expenses	699,819	647,705	1,413,718	1,263,973
Expenses from non-insurance businesses	122,966	106,698	217,822	192,989
Interest expense	31,723	38,096	66,693	74,747
Total operating costs and expenses	2,290,325	1,996,146	4,473,302	3,856,947
Income before income taxes	222,562	299,940	954,995	596,008
Income tax expense	(43,095)	(62,262)	(182,499)	(126,614)
Net income before noncontrolling interests	179,467	237,678	772,496	469,394
Noncontrolling interests	(145)	(440)	(2,536)	(2,631)
Net income to common stockholders	$ 179,322	$ 237,238	$ 769,960	$ 466,763
NET INCOME PER SHARE:
Basic (in dollar per share)	$ 0.65	$ 0.85	$ 2.78	$ 1.68
Diluted (in dollar per share)	$ 0.64	$ 0.85	$ 2.76	$ 1.66