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Note 7 Contingencies (Details) - USD ($)
$ in Millions
Jun. 27, 2020
Sep. 28, 2019
Loss Contingencies [Line Items]    
Loss Contingency Accrual $ 35 $ 36
Collectibility of Receivable and Excess and Obsolete Inventory [Member]    
Loss Contingencies [Line Items]    
Loss Contingency Accrual $ 10