CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net income	$ 518,870	$ 174,592
Adjustments to reconcile net income to net cash provided by operating activities:
Net investment (gains) losses	97,671	414,231
Net realized and unrealized (gains) losses on other investments	4,923	(31,843)
Amortization of fixed maturities	(11,655)	24,918
Interest in income (loss) of equity method investments	(2,835)	(5,040)
Other amortization and depreciation	62,378	52,469
Share-based compensation expense, net of cash payments	39,911	36,097
Changes in:
Accrued interest receivable	(5,948)	(13,796)
Reinsurance recoverable on unpaid losses and loss expenses	(205,369)	(239,482)
Reinsurance recoverable on paid losses and loss expenses	(54,297)	201,729
Deferred acquisition costs	(32,663)	(79,994)
Prepaid reinsurance premiums	(422,078)	(222,235)
Reserve for losses and loss expenses	400,725	29,151
Unearned premiums	639,441	577,490
Insurance and reinsurance balances, net	(103,589)	72,655
Other items	23,818	(73,932)
Net cash provided by operating activities	949,303	917,010
Purchases of:
Fixed maturities, available for sale	(5,166,446)	(5,466,347)
Fixed maturities, held to maturity	(25,000)	(247,862)
Equity securities	(87,388)	(92,977)
Mortgage loans	(22,318)	(113,978)
Other investments	(67,828)	(122,628)
Equity method investments	(11,289)	0
Short-term investments	(221,618)	(141,821)
Proceeds from the sale of:
Fixed maturities, available for sale	4,038,436	4,730,523
Equity securities	29,171	111,148
Other investments	104,275	134,348
Short-term investments	132,421	71,435
Proceeds from redemption of fixed maturities, available for sale	680,637	850,954
Proceeds from redemption of fixed maturities, held to maturity	11,360	3,500
Proceeds from redemption of short-term investments	46,072	20,124
Proceeds from the repayment of mortgage loans	35,620	54,881
Proceeds from the (purchase) sale of other assets, net	(16,219)	(25,041)
Loan advances made	(149,879)	0
Net cash used in investing activities	(689,993)	(233,741)
Cash flows from financing activities:
Repurchase of common shares - open market	0	(34,987)
Taxes paid on withholding shares	(17,424)	(13,688)
Dividends paid - common shares	(115,569)	(112,888)
Dividends paid - preferred shares	(22,688)	(22,688)
Federal Home Loan Bank advances, net	5,250	78,950
Net cash used in financing activities	(150,431)	(105,301)
Effect of exchange rate changes on foreign currency cash, cash equivalents and restricted cash	(16,217)	(60,396)
Increase in cash, cash equivalents and restricted cash	92,662	517,572
Cash, cash equivalents and restricted cash - beginning of period	1,174,653	1,317,690
Cash, cash equivalents and restricted cash - end of period	1,267,315	1,835,262
Supplemental disclosures of cash flow information:
Income taxes paid	54,756	36,431
Interest paid	$ 49,207	$ 45,963