Comprehensive Income (Loss) (Components Of Comprehensive Income (Loss) In The Consolidated Statements Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Comprehensive Income (Loss) [Abstract]
Unrealized appreciation (depreciation) ("URA(D)") of securities - temporary, Before Tax	$ (59,318)	$ (152,280)	$ 14,682
URA(D) on securities - OTTI, Before Tax	(9,735)	(399)	(236)
Reclassification of net realized losses (gains) included in net income (loss), Before Tax	41,624	(3,792)	974
Foreign currency translation adjustments, Before Tax	(44,938)	(29,428)	10,815
Benefit plan actuarial net gain (loss), Before Tax	(60,169)	27,442	(18,109)
Reclassification of amortization of net gain (loss) included in net income (loss), Before Tax	4,647	8,889	7,377
Total other comprehensive income (loss), Before Tax	(127,890)	(149,568)	15,504
Unrealized appreciation (depreciation) ("URA(D)") of securities - temporary, Tax Effect	20,744	53,298	(5,139)
URA(D) on securities - OTTI, Tax Effect	3,407	140	83
Reclassification of net realized losses (gains) included in net income (loss), Tax Effect	(14,551)	1,327	(341)
Foreign currency translation adjustments, Tax Effect	15,728	10,300	(3,786)
Benefit plan actuarial net gain (loss), Tax Effect	21,059	(9,605)	6,338
Reclassification of amortization of net gain (loss) included in net income (loss), Tax Effect	(1,627)	(3,111)	(2,582)
Total other comprehensive income (loss), Tax Effect	44,761	52,349	(5,427)
Unrealized appreciation (depreciation) ("URA(D)") of securities - temporary, Net of Tax	(38,574)	(98,982)	9,544
URA(D) of securities - OTTI, Net of Tax	(6,328)	(259)	(154)
Less: reclassification adjustment for realized losses (gains) included in net income (loss)	27,073	(2,465)	633
Foreign currency translation adjustments, Net of Tax	(29,210)	(19,128)	7,030
Benefit plan actuarial net gain (loss), Net of Tax	(39,110)	17,837	(11,771)
Reclassification adjustment for amortization of net (gain) loss included in net income (loss)	3,020	5,778	4,795
Total other comprehensive income (loss), net of tax	$ (83,129)	$ (97,219)	$ 10,077