Financial Instruments (Narrative) (Details) (USD $)	6 Months Ended
	Jun. 11, 2011	Jun. 12, 2010
Debt instrument, fair value	$ 29,200,000,000
Interest Rate Contract [Member]
Expected reclassification of net gain (loss) related to hedge from accumulated OCI into net income	(16,000,000)
Notional amount of interest rate derivatives	8,730,000,000	8,600,000,000
Percentage of total debt, net of related interest rate derivatives, exposed to variable interest rates	42.00%	43.00%
Foreign Exchange Contract [Member]
Expected reclassification of net gain (loss) related to hedge from accumulated OCI into net income	(28,000,000)
Unrealized gain (loss) on derivatives and commodity contracts	(29,000,000)	5,000,000
Derivative instruments not designated as hedging instruments inception to date gain		6,000,000
Derivative instruments not designated as hedging instruments, inception to date loss	7,000,000
Foreign currency derivatives at face value, net	2,300,000,000	1,300,000,000
Commodity Contract [Member]
Expected reclassification of net gain (loss) related to hedge from accumulated OCI into net income	30,000,000
Face value of open commodity derivative contracts qualifying for hedging	590,000,000	587,000,000
Unrealized gain (loss) on derivatives and commodity contracts	61,000,000	(15,000,000)
Derivative asset not designated as hedging instrument, face value	356,000,000	246,000,000
Derivative instruments not designated as hedging instruments inception to date gain	45,000,000
Derivative instruments not designated as hedging instruments, inception to date loss		$ 14,000,000