Employee Benefits (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Target allocation and pension plan asset allocation
Pension distribution	$ 32
Pension settlement charge	9		$ 11
Components of net periodic benefit cost:
Service cost	2	$ 2	7	$ 6
Interest cost	2	3	8	9
Expected return on plan assets	(2)	(2)	(8)	(7)
Amortization	1	1	5	5
Settlement loss recognized	9		11
Net periodic benefit cost	12	$ 4	23	$ 13
Deferred compensation paid	32
Defined benefit pension plan
Target allocation and pension plan asset allocation
Contributions expected to be made to defined benefit pension plans	$ 0		$ 0