Income Taxes (Reconciliation Of Taxes Computed At The Statutory Rate To Income Tax Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Provision for federal income tax at statutory rate	$ 329,760	$ 204,809	$ 140,501
State income tax provision net of federal income tax effect	14,364	9,625	10,745
Foreign tax	(253)	(713)	(695)
Foreign losses (earnings)	772	512	1,047
Manufacturing deduction	(16,275)	(14,560)	(9,905)
Contingent tax liability	(404)	0	(20)
Other, net	3,783	(59)	793
Provision for income taxes	$ 331,747	$ 199,614	$ 142,466