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		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Gain (Loss) on Derivative Instruments
Derivatives not designated as hedging instruments	$ (3)	$ (11)	$ (11)	$ (20)
Interest Rate Contracts [Member] | Other Income [Member]
Gain (Loss) on Derivative Instruments
Derivatives not designated as hedging instruments	(4)	(3)	(8)	(5)
Foreign Exchange Contracts [Member] | Other Income [Member]
Gain (Loss) on Derivative Instruments
Derivatives not designated as hedging instruments	1	(8)	(3)	(15)
Foreign Exchange Contracts [Member] | Cost Of Sales [Member]
Gain (Loss) on Derivative Instruments
Gain (loss) reclassified from Accumulated other comprehensive loss into Net earnings (effective portion)	0	2	(1)	2
Foreign Exchange Contracts [Member] | Accumulated Other Comprehensive Loss [Member]
Gain (Loss) on Derivative Instruments
Gain recognized in Accumulated other comprehensive loss	$ (2)	$ 0	$ 1	$ 3