Commitments And Contingencies (Schedule Of Product Warranty Liability) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of period	$ 37	$ 37	$ 38	$ 36
Warranty expense recognized	1	1	3	3
Warranty credits issued	(1)	0	(4)	(1)
Balance at end of period	$ 37	$ 38	$ 37	$ 38