Restructuring Activities Restructuring Costs by Type and Income Statement Location (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	$ 15	$ 31	$ 56	$ 278
Severance and Employee Benefit Costs | Cost of products sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	(1)	(8)	(4)	17
Severance and Employee Benefit Costs | Other expense/(income)
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	(1)	2	(1)	12
Severance and Employee Benefit Costs | Other expense/(income)
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	0	(1)	0	5
Asset-Related Costs | Cost of products sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	8	8	11	33
Asset-Related Costs | Other expense/(income)
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	0	6	9	7
Other Costs | Cost of products sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	5	18	20	125
Other Costs | Other expense/(income)
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	4	6	21	21
Other Costs | Other expense/(income)
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost (credit)	$ 0	$ 0	$ 0	$ 58