Risk Management (Summary Of Derivative Instruments And The Effect On The Condensed Consolidated Statements Of Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Gain (Loss) on Derivative Instruments
Derivatives not designated as hedging instruments	$ (5)	$ 5	$ (17)	$ (15)
Interest Rate Contracts [Member] | Other Income [Member]
Gain (Loss) on Derivative Instruments
Derivatives not designated as hedging instruments	(4)	(3)	(12)	(8)
Foreign Exchange Derivative Contracts [Member] | Other Income [Member]
Gain (Loss) on Derivative Instruments
Derivatives not designated as hedging instruments	(1)	8	(5)	(7)
Foreign Exchange Derivative Contracts [Member] | Cost Of Sales [Member]
Gain (Loss) on Derivative Instruments
Gain (loss) reclassified from Accumulated other comprehensive loss into Net earnings (effective portion)	(1)	1	(2)	4
Foreign Exchange Derivative Contracts [Member] | Accumulated Other Comprehensive Loss [Member]
Gain (Loss) on Derivative Instruments
Gain (loss) recognized in Accumulated other comprehensive loss	$ 1	$ (4)	$ 2	$ (1)