Income Taxes (Components Of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal & state	$ 40,643	$ 162,483	$ 129,204
Foreign	22,851	46,593	35,188
Total current expense	63,494	209,076	164,392
Federal & state	173	72,645	131,336
Foreign	(4,041)	(8,491)	5,064
Total deferred (benefit) expense	(3,868)	64,154	136,400
Total income tax expense	$ 59,626	$ 273,230	$ 300,792