Other Comprehensive Income (Loss) (Components Of Comprehensive Income (Loss) In The Consolidated Statements Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Other Comprehensive Income (Loss) [Abstract]
Unrealized appreciation (depreciation) ("URA(D)") of securities - temporary, Before Tax	$ 15,572	$ 31,996
URA(D) on securities - OTTI, Before Tax	9,735
Reclassification of net realized losses (gains) included in net income (loss), Before Tax	35,639	1,997
Foreign currency translation adjustments, Before Tax	(51,243)	(12,055)
Reclassification of amortization of net gain (loss) included in net income (loss), Before Tax	2,467	1,186
Total other comprehensive income (loss), Before Tax	12,170	23,124
Unrealized appreciation (depreciation) ("URA(D)") of securities - temporary, Tax Effect	(5,950)	(11,199)
URA(D) on securities - OTTI, Tax Effect	(3,407)
Reclassification of net realized losses (gains) included in net income (loss), Tax Effect	(11,974)	(699)
Foreign currency translation adjustments, Tax Effect	17,935	4,219
Reclassification of amortization of net gain (loss) included in net income (loss), Tax Effect	(863)	(415)
Total other comprehensive income (loss), Tax Effect	(4,259)	(8,094)
Unrealized appreciation (depreciation) ("URA(D)") of securities - temporary, Net of Tax	9,622	20,797
URA(D) of securities - OTTI, Net of Tax	6,328
Less: reclassification adjustment for realized losses (gains) included in net income (loss)	23,665	1,298
Foreign currency translation adjustments, Net of Tax	(33,308)	(7,836)
Benefit plan actuarial net gain (loss), Net of Tax
Reclassification adjustment for amortization of net (gain) loss included in net income (loss)	1,604	771
Total other comprehensive income (loss), net of tax	$ 7,911	$ 15,030