Annual report pursuant to Section 13 and 15(d)

Composition of Certain Financial Statement Items Accounts Receivable (Details)

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Composition of Certain Financial Statement Items Accounts Receivable (Details) - USD ($)
$ in Millions
Sep. 30, 2018
Sep. 24, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable $ 2,848 $ 3,576
Long-term contracts 20 40
Other 36 16
Accounts receivable, net 2,904 3,632
Allowance for doubtful accounts 56 11
Apple [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable $ 960 $ 960