Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified			12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011	Dec. 30, 2012 Building and Building Improvements [Member] Minimum [Member]	Dec. 30, 2012 Building and Building Improvements [Member] Maximum [Member]	Dec. 30, 2012 Equipment [Member] Minimum [Member]	Dec. 30, 2012 Equipment [Member] Maximum [Member]	Dec. 30, 2012 Software [Member] Minimum [Member]	Dec. 30, 2012 Software [Member] Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life			10 years	40 years	3 years	30 years	2 years	5 years
Self Insurance Reserve	$ 42	$ 52