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Valuation And Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 02, 2021
Oct. 03, 2020
Sep. 28, 2019
Allowance for Doubtful Accounts [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 26 $ 21 $ 19
Charged to Costs and Expenses 5 9 4
Charged to Other Accounts 0 0 0
(Deductions) (6) (4) (2)
Balance at End of Period 25 26 21
Inventory Lower of Cost or Market Allowance [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 27 34 25
Charged to Costs and Expenses 79 102 61
Charged to Other Accounts 0 0 0
(Deductions) (59) (109) (52)
Balance at End of Period 47 27 34
Valuation Allowance on Deferred Tax Assets [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 127 86 79
Charged to Costs and Expenses 24 35 13
Charged to Other Accounts 0 13 6
(Deductions) 0 (7) (12)
Balance at End of Period $ 151 $ 127 $ 86