Annual report pursuant to Section 13 and 15(d)

Schedule II - Valuation and Qualifying Accounts (Details)

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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2018
Sep. 24, 2017
Sep. 25, 2016
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Valuation Allowances and Reserves, Beginning Balance $ 874 $ 755 $ 641
Valuation Allowances and Reserves, Charged (Credited) to Costs and Expenses 711 119 114
Valuation Allowances and Reserves, Ending Balance 1,585 874 755
SEC Schedule, 12-09, Allowance, Credit Loss [Member]      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Valuation Allowances and Reserves, Beginning Balance 11 1 6
Valuation Allowances and Reserves, Charged (Credited) to Costs and Expenses 45 10 (5)
Valuation Allowances and Reserves, Ending Balance 56 11 1
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Valuation Allowances and Reserves, Beginning Balance 863 754 635
Valuation Allowances and Reserves, Charged (Credited) to Costs and Expenses 666 109 119
Valuation Allowances and Reserves, Ending Balance $ 1,529 $ 863 $ 754