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. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Foreign Exchange Contracts [Member] | Costs Of Sales [Member]
Gain (Loss) on Derivative Instruments
Losses (gains) reclassified from Accumulated other comprehensive loss into Net earnings	$ 0	$ 1	$ (1)	$ 2
Foreign Exchange Contracts [Member] | Accumulated Other Comprehensive Loss [Member]
Gain (Loss) on Derivative Instruments
Other comprehensive gains (losses) before reclassifications	(1)	1	(1)	2
Not Designated As Hedging Instruments [Member]
Gain (Loss) on Derivative Instruments
Total derivatives not designated as hedging instruments	8	(1)	0	(6)
Not Designated As Hedging Instruments [Member] | Interest Rate Contracts [Member] | Other Income (Expense) [Member]
Gain (Loss) on Derivative Instruments
Total derivatives not designated as hedging instruments	0	0	1	(1)
Not Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member] | Other Income (Expense) [Member]
Gain (Loss) on Derivative Instruments
Total derivatives not designated as hedging instruments	$ 8	$ (1)	$ (1)	$ (5)