Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
OPERATING ACTIVITIES
Net income	$ 244,319	$ 286,459
Adjustments to reconcile net income to net cash provided (used) by operating activities	(174,105)	(48,424)
Net Cash Provided By Operating Activities	70,214	238,035
INVESTING ACTIVITIES
Proceeds from sales of fixed maturities and equity securities	226,492	99,908
Proceeds from maturities, calls and prepayments of fixed maturities	471,907	810,934
Cost of fixed maturities and equity securities purchased	(1,324,755)	(556,934)
Net change in short-term investments	(348,335)	(595,971)
Proceeds from sales of equity method investments	6,479	21,365
Cost of equity method investments	(1,126)	(19,424)
Change in restricted cash and cash equivalents	90,003	(9,748)
Additions to property and equipment	(34,634)	(38,942)
Acquisitions, net of cash acquired	5,762	0
Other	(605)	489
Net Cash Used By Investing Activities	(920,336)	(288,323)
FINANCING ACTIVITIES
Additions to senior long-term debt and other debt	533,235	41,230
Repayment of senior long-term debt and other debt	(228,836)	(43,044)
Premiums and fees related to early extinguishment of debt	(43,691)	0
Repurchases of common stock	(15,206)	(22,670)
Issuance of common stock	4,101	3,609
Purchase of noncontrolling interests	(3,078)	(12,474)
Distributions to noncontrolling interests	(3,187)	(2,490)
Other	(13,428)	(12,454)
Net Cash Provided (Used) By Financing Activities	229,910	(48,293)
Effect of foreign currency rate changes on cash and cash equivalents	(1,859)	(8,644)
Decrease in cash and cash equivalents	(622,071)	(107,225)
Cash and cash equivalents at beginning of period	2,630,009	1,960,169
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 2,007,938	$ 1,852,944