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
	Apr. 02, 2016	Apr. 04, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Loss on Derivative Instruments	$ (12)	$ (17)
Interest rate swap | Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Loss on Derivative Instruments	0	(1)
Foreign exchange contracts | Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Loss on Derivative Instruments	$ (12)	$ (16)