Restructuring Reserves (Details) $ in Millions	9 Months Ended
	Sep. 26, 2020 USD ($)
Restructuring Reserve [Roll Forward]
Beginning balance	$ 34	[1]
Costs incurred	43	[1],[2]
Payments	(46)	[1]
Currency translation	1	[1]
Ending balance	32	[1]
Restructuring and Related Costs, Other Costs (Income), Net	$ 24
Restructuring Reserve, Expected Final Year of Payments	2021

[1] The movements in the restructuring liability principally consist of severance and other costs such as 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.

[2] Excludes $24 million of charges for impairment of acquired technology in development, fixed asset writedowns and costs associated with environmental remediation at abandoned / previously owned facilities.