Employee Benefit Plans (Amounts Recoreded in Consolidated Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 30, 2011	Dec. 31, 2010
Pension Plans, Defined Benefit [Member]
Amounts Recorded in Consolidated Balance Sheets [Abstract]
Current Liabilities	$ (15)	$ (13)
Long-term Liabilities	(803)	(623)
Net Amount Recognized in Consolidated Balance Sheet	(818)	(636)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Amounts Recorded in Consolidated Balance Sheets [Abstract]
Current Liabilities	(42)	(41)
Long-term Liabilities	(346)	(342)
Net Amount Recognized in Consolidated Balance Sheet	$ (388)	$ (383)