CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenues
Net premiums earned	$ 1,393,431	$ 1,304,478	$ 2,734,251	$ 2,562,519
Net investment income	187,297	190,975	395,009	358,358
Other insurance related income	8,662	8,526	12,240	16,867
Net investment gains (losses):
Increase in allowance for expected credit losses	(2,332)	(12,963)	(5,062)	(8,300)
Impairment losses	(400)	(156)	(2,326)	(164)
Other realized and unrealized investment gains (losses)	46,200	(40,360)	20,850	(54,223)
Total net investment gains (losses)	43,468	(53,479)	13,462	(62,687)
Total revenues	1,632,858	1,450,500	3,154,962	2,875,057
Expenses
Net losses and loss expenses	801,754	765,988	1,587,679	1,494,659
Acquisition costs	275,897	265,091	540,477	519,345
General and administrative expenses	161,078	148,441	320,241	311,813
Foreign exchange losses (gains)	94,885	(7,384)	151,920	(30,936)
Interest expense and financing costs	16,586	17,010	33,158	34,157
Reorganization expenses	0	14,014	0	26,312
Amortization of intangible assets	2,396	2,729	5,125	5,458
Total expenses	1,352,596	1,205,889	2,638,600	2,360,808
Income before income taxes and interest in income (loss) of equity method investments	280,262	244,611	516,362	514,249
Income tax (expense) benefit	(56,199)	(40,547)	(100,521)	84,107
Interest in income (loss) of equity method investments	(705)	7,900	1,586	9,069
Net income	223,358	211,964	417,427	607,425
Preferred share dividends	7,563	7,563	15,125	15,125
Net income available to common shareholders	$ 215,795	$ 204,401	$ 402,302	$ 592,300
Earnings per common share:
Earnings per common share (in usd per share)	$ 2.75	$ 2.42	$ 5.04	$ 6.99
Earnings per diluted common share (in usd per share)	$ 2.72	$ 2.40	$ 4.98	$ 6.93
Weighted average common shares outstanding (in shares)	78,378	84,475	79,757	84,677
Weighted average diluted common shares outstanding (in shares)	79,329	85,326	80,845	85,509