Property, Plant And Equipment (Details) - USD ($) $ in Millions	Apr. 03, 2021	Oct. 03, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 16,018	$ 15,581
Less accumulated depreciation	8,357	7,985
Net Property, Plant and Equipment	7,661	7,596
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	209	196
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,072	4,961
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,220	9,013
Land improvements and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	425	420
Buildings and equipment under construction
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,092	$ 991