Schedule II - Valuation And Qualifying Accounts (Details) (Allowance For Doubtful Accounts [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Allowance For Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 28,047	$ 32,802	$ 45,990
Additions-Charged to Expense	13,603	10,954	22,020
Deductions-Write-offs, Payments and Other Adjustments	21,979	15,709	35,208
Balance at End of Period	$ 19,671	$ 28,047	$ 32,802