Other Financial Data (Property, Plant And Equipment, Net) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014	Dec. 31, 2014
Property, Plant and Equipment, Net [Abstract]
Land	$ 18		$ 18		$ 18
Building	528		528		559
Machinery and equipment	1,536		1,536		1,672
Property, plant and equipment, gross	2,082		2,082		2,249
Less accumulated depreciation	(1,615)		(1,615)		(1,700)
Property, plant and equipment, net	467		467		$ 549
Depreciation expense	$ 30	$ 44	$ 107	$ 128