Employee Benefits (Details) $ in Millions	3 Months Ended
	Apr. 02, 2016 USD ($) plan	Apr. 04, 2015 USD ($)
Components of net periodic benefit cost:
Service cost	$ 2	$ 2
Interest cost	3	3
Expected return on plan assets	(2)	(2)
Amortization and other	1	1
Net periodic benefit cost	$ 4	$ 4
Defined benefit pension plan
Target allocation and pension plan asset allocation
Number of defined benefit plans | plan	2
Contributions expected to be made to defined benefit pension plans	$ 0