Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FROM OPERATING ACTIVITIES:
Net income to common stockholders	$ 998,839	$ 728,060
Adjustments to reconcile net income to net cash from operating activities:
Net investment gains	(127,299)	(78,404)
Depreciation and amortization	46,037	101,330
Noncontrolling interests	4,131	8,652
Investment funds	(121,919)	(169,538)
Stock incentive plans	36,247	36,486
Change in:
Arbitrage trading account	(39,389)	(224,613)
Premiums and fees receivable	(247,782)	(365,092)
Reinsurance accounts	(187,453)	(255,126)
Deferred policy acquisition costs	(92,724)	(108,131)
Income taxes	(111,231)	(81,574)
Reserves for losses and loss expenses	1,225,679	1,164,594
Unearned premiums	551,894	707,658
Other	(161,727)	60,092
Net cash from operating activities	1,773,303	1,524,394
CASH USED IN INVESTING ACTIVITIES:
Proceeds from sale of fixed maturity securities	1,638,049	1,631,849
Proceeds from sale of equity securities	20,057	100,366
(Contributions to) distributions from investment funds	(72,925)	124,892
Proceeds from maturities and prepayments of fixed maturity securities	3,916,331	4,672,562
Purchase of fixed maturity securities	(7,694,663)	(8,442,260)
Purchase of equity securities	(340,158)	(340,424)
Real estate (purchased) sold	(18,670)	182,998
Change in loans receivable	2,066	(27,764)
Net purchases of property, furniture and equipment	(35,270)	(53,558)
Change in balances due to security brokers	177,457	110,752
Cash received in connection with business disposition	906,789	0
Payment for business purchased net of cash acquired	(49,572)	0
Other	94	14
Net cash used in investing activities	(1,550,415)	(2,040,573)
CASH (USED IN) FROM FINANCING ACTIVITIES:
Repayment of senior notes and other debt	(426,503)	(503,914)
Net proceeds from issuance of debt	2,181	1,032,404
Cash dividends to common stockholders	(182,147)	(156,107)
Purchase of common treasury shares	(6,570)	(122,426)
Other, net	(21,808)	(27,941)
Net cash (used in) from financing activities	(634,847)	222,016
Net impact on cash due to change in foreign exchange rates	(26,134)	(9,174)
Net change in cash and cash equivalents	(438,093)	(303,337)
Cash and cash equivalents at beginning of period	1,568,843	2,372,366
Cash and cash equivalents at end of period	$ 1,130,750	$ 2,069,029