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Other Comprehensive Income (Loss) (Components Of Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2023
Oct. 01, 2022
Oct. 02, 2021
Other Comprehensive Income Loss [Line Items]      
Total Other Comprehensive Income (Loss), Before Tax $ 38 $ (115) $ 2
Total Other Comprehensive Income (Loss), Tax (1) (10) 5
Total Other Comprehensive Income (Loss), Net of Taxes 37 (125) 7
Accumulated Other Comprehensive Income (Loss), Net of Tax (260) (297)  
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax (10) (12)  
AOCI, Debt Securities, Available-for-Sale, Adjustment, after Tax (5) (6)  
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax (252) (281)  
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax 7 2  
Derivatives accounted for as cash flow hedges: | Interest Expense [Member]      
Other Comprehensive Income Loss [Line Items]      
Reclassification from Accumulated Other Comprehensive Income, Before Tax 2 1 1
Reclassification from AOCI, Current Period, Tax 0 0 0
Reclassification from Accumulated Other Comprehensive Income, Net of Tax 2 1 1
Derivatives accounted for as cash flow hedges: | Cost of Sales      
Other Comprehensive Income Loss [Line Items]      
Reclassification from Accumulated Other Comprehensive Income, Before Tax 0 0 1
Reclassification from AOCI, Current Period, Tax 0 0 0
Reclassification from Accumulated Other Comprehensive Income, Net of Tax 0 0 1
Investments:      
Other Comprehensive Income Loss [Line Items]      
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax 1 (8) (1)
Other Comprehensive Income (Loss), Before Reclassifications, Tax 0 1 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax 1 (7) (1)
Currency translation:      
Other Comprehensive Income Loss [Line Items]      
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax 29 (166) 17
Other Comprehensive Income (Loss), Before Reclassifications, Tax 0 4 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax 29 (162) 17
Postretirement benefits:      
Other Comprehensive Income Loss [Line Items]      
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax 6 58 10
Other Comprehensive Income (Loss), Before Reclassifications, Tax (1) (15) (2)
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax 5 43 8
Postretirement benefits: | Other income/expense      
Other Comprehensive Income Loss [Line Items]      
Reclassification from Accumulated Other Comprehensive Income, Before Tax 0 0 (26)
Reclassification from AOCI, Current Period, Tax 0 0 7
Reclassification from Accumulated Other Comprehensive Income, Net of Tax $ 0 $ 0 $ (19)