Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income	$ 235,540	$ 297,075
Adjustments to reconcile net income to cash provided by operating activities:
Provision for policy losses and other claims	256,165	206,842
Depreciation and amortization	72,425	65,818
Amortization of premiums and accretion of discounts on debt securities, net	20,162	11,369
Net realized investment gains	(4,499)	(41,057)
Share-based compensation	35,596	27,355
Equity in earnings of equity method investments, net	(1,121)	(162)
Dividends from equity method investments	2,674	2,332
Changes in assets and liabilities excluding effects of acquisitions and noncash transactions:
Claims paid, including assets acquired, net of recoveries	(214,594)	(199,895)
Net change in income tax accounts	58,132	45,174
Increase in accounts and accrued income receivable	(29,006)	(35,142)
Decrease in accounts payable and accrued liabilities	(74,602)	(71,196)
(Decrease) increase in deferred revenue	(2,846)	1,068
Other, net	13,924	(8,472)
Cash provided by operating activities	367,950	301,109
Cash flows from investing activities:
Net cash effect of acquisitions/dispositions	(386,231)	(4,725)
Net decrease (increase) in deposits with banks	3,769	(2,268)
Purchases of debt and equity securities	(1,219,902)	(1,147,192)
Proceeds from sales of debt and equity securities	583,175	698,393
Proceeds from maturities of debt securities	702,670	342,790
Investments in unconsolidated entities	(49,840)	(77,000)
Net change in other investments	(3,022)	1,424
Advances under secured financing agreements	(6,317,790)	(2,775,216)
Collections of secured financings receivable	6,025,653	2,650,317
Capital expenditures	(58,045)	(53,951)
Proceeds from sales of property and equipment	13,934	105
Proceeds from insurance settlement	123	0
Cash used for investing activities	(705,506)	(367,323)
Cash flows from financing activities:
Net change in deposits	80,346	3,376
Borrowings under secured financing agreements	6,235,457	2,764,605
Repayments of secured financings payable	(6,035,271)	(2,650,804)
Net proceeds from issuance of unsecured senior notes	443,753	0
Borrowings under unsecured credit facility	120,000	160,000
Repayments of borrowings under unsecured credit facility	(280,000)	(160,000)
Repayments of notes and contracts payable	(2,658)	(2,905)
Net activity related to noncontrolling interests	(1,732)	(1,045)
Net payments in connection with share-based compensation	(9,897)	(8,490)
Repurchases of Company shares	(68,864)	(2,066)
Payments of cash dividends	(98,698)	(94,105)
Cash provided by financing activities	382,436	8,566
Effect of exchange rate changes on cash	(7,495)	2,484
Net increase (decrease) in cash and cash equivalents	37,385	(55,164)
Cash and cash equivalents—Beginning of period	1,485,959	1,467,129
Cash and cash equivalents—End of period	1,523,344	1,411,965
Supplemental information:
Interest	20,371	22,936
Premium taxes	42,098	37,370
Income taxes, less refunds of $2,692 and $612	$ 4,283	$ 28,902