Intangible Assets and Goodwill (Carrying Amount of Goodwill) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2016	Dec. 31, 2015
Goodwill Activity
Aggregate goodwill	$ 590	$ 420
Accumulated impairment losses	0	0
Goodwill, net of impairment losses	590	420
Goodwill acquired	170
Products
Goodwill Activity
Aggregate goodwill	270	270
Accumulated impairment losses	0	0
Goodwill, net of impairment losses	270	270
Goodwill acquired	0
Services
Goodwill Activity
Aggregate goodwill	320	150
Accumulated impairment losses	0	0
Goodwill, net of impairment losses	320	$ 150
Goodwill acquired	$ 170