Receivables (Allowances For Discounts, Returns, Claims And Doubtful Accounts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Receivables [Abstract]
Balance at beginning of year	$ 45,755		$ 62,809		$ 62,378
Additions charged to costs and expenses	161,073		170,274		205,145
Deductions	163,123	[1]	187,328	[1]	204,714	[1]
Balance at end of year	$ 43,705		$ 45,755		$ 62,809

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