Income Taxes (Components Of The Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Abstract]
U.S.	$ 90,486	$ 143,297	$ 116,829
Non-U.S.	14,811	22,575	18,219
Total current tax expense (benefit)	105,297	165,872	135,048
Total deferred U.S. tax expense (benefit)	28,724	21,780	154,658
Total income tax expense (benefit)	$ 134,021	$ 187,652	$ 289,706