Employee Benefits (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Components of net periodic benefit cost:
Service cost	$ 2	$ 2	$ 5	$ 4
Interest cost	3	3	6	6
Expected return on plan assets	(3)	(3)	(6)	(5)
Amortization and other	3	3	6	4
Net periodic benefit cost	5	$ 5	11	$ 9
Defined benefit pension plan
Target allocation and pension plan asset allocation
Contributions expected to be made to defined benefit pension plans	$ 0		$ 0