Commitments And Contingencies (Schedule Of Product Warranty Liability) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of period	$ 37	$ 38
Warranty expense recognized	1	2
Warranty credits issued	(1)	(3)
Balance at end of period	$ 37	$ 37