Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Mar. 29, 2020
Focused Company Plan [Member]
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost	$ 1,200		$ 1,200
Percentage of expected costs to be non-cash	10.00%
Restructuring costs incurred	$ 117		$ 160
2017-2019 Initiatives and Organizing for Growth [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		$ 92