Receivables (Allowances For Discounts, Returns, Claims And Doubtful Accounts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at beginning of year	$ 43,705		$ 45,755		$ 62,809
Additions charged to costs and expenses	180,616		161,073		170,274
Deductions	186,448	[1]	163,123	[1]	187,328	[1]
Balance at end of year	$ 37,873		$ 43,705		$ 45,755

[1] Represents charge-offs, net of recoveries.