Supplemental Financial Information - Other income (expense) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Other Nonrecurring Income (Expense) [Line Items]
Other, net	$ 0	$ (1)	$ 110	$ (1)
Total - Other income (expense)	(1)	(1)	109	1
Manufacturing Service Arrangements and Transitional Service Arrangements
Other Nonrecurring Income (Expense) [Line Items]
Result from MSA and TSA arrangements	$ (1)	$ 0	$ (1)	$ 2