Intangible Assets and Goodwill (Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 933		$ 933		$ 111
Accumulated Amortization	109		109		62
Intangible Assets And Goodwill
Amortization expense on intangibles	38	$ 3	52	$ 4
Finite-Lived Intangible Assets, Future Amortization Expense
2016	112		112
2017	126		126
2018	126		126
2019	125		125
2020	122		122
2021	122		122
Completed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	60		60		60
Accumulated Amortization	35		35		32
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8		8		8
Accumulated Amortization	6		6		5
Customer-related
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	821		821		23
Accumulated Amortization	53		53		10
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	44		44		20
Accumulated Amortization	$ 15		$ 15		$ 15