Debt and Other Obligations (Details) (Information related to Interest Rate and Expense) (6.00% Convertible Senior Notes Due 2015, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
6.00% Convertible Senior Notes Due 2015
Debt Instrument [Line Items]
Effective interest rate	8.00%	8.00%	8.00%
Interest cost related to contractual interest coupon	$ 44	$ 45	$ 93
Interest cost related to amortization of the discount	$ 9	$ 11	$ 20