Annual report pursuant to Section 13 and 15(d)

Composition of Certain Financial Statement Items Property, Plant and Equipment (Details)

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Composition of Certain Financial Statement Items Property, Plant and Equipment (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2018
Sep. 24, 2017
Sep. 25, 2016
Property, Plant and Equipment [Abstract]      
Land $ 186 $ 195  
Buildings and improvements 1,575 1,595  
Computer equipment and software 1,419 1,609  
Machinery and equipment 3,792 3,528  
Furniture and office equipment 85 109  
Leasehold improvements 325 310  
Construction in progress 79 73  
Property, plant and equipment, gross 7,461 7,419  
Less accumulated depreciation and amortization (4,486) (4,203)  
Property, plant and equipment, net 2,975 3,216  
Depreciation and amortization expense $ 776 $ 684 $ 624