Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 153,477	$ 135,275
Adjustments to reconcile net income to cash provided by operating activities:
Provision for policy losses and other claims	337,739	429,744
Depreciation and amortization	63,879	55,141
Amortization of premiums and accretion of discounts on securities, net	17,984	18,757
Excess tax benefits from share-based compensation	(6,050)	(5,796)
Share-based compensation	15,962	18,601
Net realized investment gains	(24,294)	(6,812)
Net OTTI losses recognized in earnings	1,033
Equity in earnings of affiliates, net	(1,068)	(11,240)
Dividends from equity method investments	4,018	7,072
Changes in assets and liabilities excluding effects of acquisitions and noncash transactions:
Claims paid, including assets acquired, net of recoveries	(353,048)	(348,058)
Net change in income tax accounts	55,372	2,931
(Increase) decrease in accounts and accrued income receivable	(23,191)	3,977
Decrease in accounts payable and accrued liabilities	(74,407)	(54,982)
Increase in deferred revenue	6,780	15,127
Other, net	(8,015)	(13,904)
Cash provided by operating activities	166,171	245,833
Cash flows from investing activities:
Net cash effect of acquisitions/dispositions	(162,910)	(650)
Net decrease in deposits with banks	2,888	512
Net decrease in loans receivable	20,002	30,285
Purchases of debt and equity securities	(1,203,474)	(1,227,720)
Proceeds from sales of debt and equity securities	627,174	507,757
Proceeds from maturities of debt securities	276,812	401,941
Net change in other long-term investments	5,093	1,971
Capital expenditures	(63,923)	(61,017)
Proceeds from sale of property and equipment	11,675	5,399
Cash used for investing activities	(486,663)	(341,522)
Cash flows from financing activities:
Net change in deposits	606,373	313,016
Proceeds from issuance of debt	300,503	249,095
Repayment of debt	(161,878)	(167,036)
Net proceeds (payments) in connection with share-based compensation plans	885	(1,080)
Net activity related to noncontrolling interests	(658)	(1,800)
Excess tax benefits from share-based compensation	6,050	5,796
Purchase of Company shares		(64,606)
Cash dividends	(64,159)	(38,629)
Cash provided by financing activities	687,116	294,756
Effect of exchange rate changes on cash	2,412	(2,317)
Net increase in cash and cash equivalents	369,036	196,750
Cash and cash equivalents—Beginning of period	834,837	670,529
Cash and cash equivalents—End of period	1,203,873	867,279
Supplemental information:
Interest	15,701	9,428
Premium taxes	47,729	45,475
Income taxes, less refunds of $9,843 and $613	$ 20,510	$ 87,242