Deferred Acquisition Costs (Schedule Of Deferred Acquisition Costs) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Beginning balance		$ 2,957,740	$ 3,128,931	$ 2,861,163
Costs deferred and other	[1]	1,587,453	1,306,390	1,729,613
Amortization		(1,394,259)	(1,477,581)	(1,461,845)
Ending balance		$ 3,150,934	$ 2,957,740	$ 3,128,931

[1] Includes foreign currency translation, the adjustment previously disclosed in 2014 and the reclassification of assets held for sale as described in Note 4.