Restructuring Activities Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020 USD ($)	Sep. 28, 2019 USD ($)	Sep. 26, 2020 USD ($) employee	Sep. 28, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	$ 9	$ 15	$ 13	$ 56
Restructuring Activities
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, number of positions eliminated | employee			220
Restructuring and related cost, expected number of positions eliminated | employee			30
Restructuring and related cost, incurred cost (credit)	9	$ 15	$ 13	$ 56
Restructuring Activities | Severance and Employee Benefit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	(2)		(8)
Restructuring Activities | Asset-Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)			(2)
Restructuring Activities | Other Implementation Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	10		21
Restructuring Activities | Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	$ 1		$ 2