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Debt And Other Obligations (Schedule Of Information Relating To Interest Rates And Expense) (Details) (6.00% Convertible Senior Notes Due 2015 [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
6.00% Convertible Senior Notes Due 2015 [Member]
Debt And Other Obligations [Line Items]
Effective interest rate	8.00%	8.00%	8.00%
Interest cost related to contractual interest coupon	$ 45	$ 93	$ 117
Interest cost related to amortization of the discount	$ 11	$ 20	$ 25

The component of interest expense representing the noncash expenses charged against earnings in the period to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate caption: Noncash Interest Expense.

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