Supplemental Financial Information - Other income (expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Other Nonrecurring Income (Expense) [Line Items]
Other, net	$ 1	$ 23	$ 111	$ 22
Total - Other income (expense)	1	22	110	23
Manufacturing Service Arrangements and Transitional Service Arrangements
Other Nonrecurring Income (Expense) [Line Items]
Result from MSA and TSA arrangements	$ 0	$ (1)	$ (1)	$ 1