Other Financial Data - Property, Plant And Equipment, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016	Dec. 31, 2016
Property, Plant and Equipment, Net [Abstract]
Land	$ 11		$ 11		$ 12
Building	282		282		306
Machinery and equipment	2,153		2,153		1,921
Property, plant and equipment, gross	2,446		2,446		2,239
Less accumulated depreciation	(1,557)		(1,557)		(1,450)
Property, plant and equipment, net	889		889		$ 789
Depreciation expense	$ 49	$ 45	$ 142	$ 137