Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 1	$ 2	$ 3	$ 4
Interest cost	0	1	1	2
Expected return on plan assets	0	0	(1)	(1)
Amortization of net actuarial loss	1	0	1
Curtailment and settlement (gain)/loss	0	(1)	1	(1)
Net periodic benefit cost	2	2	5	4
Domestic Plan
Defined Benefit Plan Disclosure [Line Items]
Pension and postretirement benefit expense	1	1	3	3
Foreign Plan
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Contributions to benefit plans	1	$ 3	4	$ 6
Expected future contributions to benefit plans	$ 7		$ 7