Risk Management (Summary Of Derivative Instruments And The Effect On The Condensed Consolidated Statements Of Operations) (Details) - Not Designated As Hedging Instruments - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on Derivative Instruments	$ (18)	$ 4	$ (30)	$ (12)
Interest rate swap | Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on Derivative Instruments	0	0	0	1
Foreign exchange contracts | Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on Derivative Instruments	$ (18)	$ 4	$ (30)	$ (13)