Restructuring Reserves (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 28, 2020	Mar. 30, 2019
Restructuring Reserve [Roll Forward]
Beginning balance		$ 34
Costs incurred	[1]	30
Reserves reversed	[2]	(1)
Payments		(15)
Ending balance		48
Restructuring and other costs, net		38	$ 11
Restructuring and Related Costs, Other Costs (Income), Net		$ 9
Restructuring Reserve, Expected Final Year of Payments		2020
Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance		$ 18
Costs incurred		23
Reserves reversed	[2]	(1)
Payments		(10)
Ending balance		30
Abandonment of Excess Facilities [Member]
Restructuring Reserve [Roll Forward]
Beginning balance		10
Costs incurred		4
Payments		(3)
Ending balance		11
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	[3]	6
Costs incurred	[3]	3
Payments	[3]	(2)
Ending balance	[3]	$ 7

[1] Excludes $9 million of charges for fixed asset writedowns and costs associated with environmental remediation at an abandoned facility.

[2] Represents reductions in cost of plans.

[3] Other includes relocation and moving expenses associated with facility consolidations, as well as employee retention costs which are accrued ratably over the period through which employees must work to qualify for a payment.