Reorganization of Business - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020 USD ($) employee	Jun. 29, 2019 USD ($)	Jun. 27, 2020 USD ($) employee	Jun. 29, 2019 USD ($)	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 41	$ 12	$ 59	$ 20
Reversal of accruals	5	6	$ 9	10
Restructuring charges in the period for total employee severance (in number of employees) | employee			700
Other charges
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	26	8	$ 38	12
Costs of sales
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	15	4	21	8
Employee separation costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	46	$ 18	68	$ 30
Reversal of accruals			9
Restructuring reserve	$ 96		96		$ 78
Payments for restructuring			$ 41
Number of employees expected to be paid (in number of employees) | employee	1,100		1,100