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Property, Plant And Equipment (Details) - USD ($)
$ in Millions
Oct. 03, 2020
Sep. 28, 2019
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 15,581 $ 14,650
Less accumulated depreciation 7,985 7,368
Net property, plant and equipment 7,596 7,282
Amount required to complete construction of buildings and equipment under construction 1,102  
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 196 198
Buildings And Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 4,961 4,747
Machinery And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 9,013 8,607
Land Improvements And Other [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 420 385
Buildings And Equipment Under Construction [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 991 $ 713