Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives - Narrative (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		$ 452
Focused Company Plan [Member]
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost	$ 1,200		$ 1,200
Restructuring costs incurred	621		600
2017-2019 Initiatives and Organizing for Growth [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		300
Manufacturing Cost Reduction [Member] | Focused Company Plan [Member]
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost	$ 500		$ 500
Percentage of expected costs to be non-cash	20.00%
Business Integration Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		(194)
Business Integration Costs [Member] | Array [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		272
Business Integration Costs [Member] | Hospira [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		$ 74