Fair Value Measurements and Financial Instruments - Unobservable Input Reconciliation of Contingent Consideration Liability (Details) (Nanostim, Fair Value, Inputs, Level 3, Contingent Consideration Liability, USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 04, 2015
Nanostim | Fair Value, Inputs, Level 3 | Contingent Consideration Liability
Contingent Consideration Liability [Roll Forward]
Beginning balance	$ 50
Change in Fair Value of Contingent Consideration	(23)
Ending balance	$ 27