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Other Comprehensive Income (Loss) (Components Of Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 01, 2022
Oct. 02, 2021
Oct. 03, 2020
Other Comprehensive Income Loss [Line Items]      
Total Other Comprehensive Income (Loss), Before Tax $ (115) $ 2 $ (72)
Total Other Comprehensive Income (Loss), Tax (10) 5 10
Total Other Comprehensive Income (Loss), Net of Taxes (125) 7 (62)
Accumulated Other Comprehensive Income (Loss), Net of Tax (297) (172)  
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax (12) (13)  
AOCI, Debt Securities, Available-for-Sale, Adjustment, after Tax (6) (1)  
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax (281) (119)  
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax (2) (41)  
Derivatives accounted for as cash flow hedges:      
Other Comprehensive Income Loss [Line Items]      
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax 0 0 (17)
Other Comprehensive Income (Loss), Before Reclassifications, Tax 0 0 5
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax 0 0 (12)
Derivatives accounted for as cash flow hedges: | Interest Expense [Member]      
Other Comprehensive Income Loss [Line Items]      
Reclassification from Accumulated Other Comprehensive Income, Before Tax 1 1 6
Reclassification from AOCI, Current Period, Tax 0 0 (2)
Reclassification from Accumulated Other Comprehensive Income, Net of Tax 1 1 4
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 1 24
Reclassification from AOCI, Current Period, Tax 0 0 (7)
Reclassification from Accumulated Other Comprehensive Income, Net of Tax 0 1 17
Investments:      
Other Comprehensive Income Loss [Line Items]      
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax (8) (1) 1
Other Comprehensive Income (Loss), Before Reclassifications, Tax 1 0 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax (7) (1) 1
Currency translation:      
Other Comprehensive Income Loss [Line Items]      
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax (166) 17 (29)
Other Comprehensive Income (Loss), Before Reclassifications, Tax 4 0 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax (162) 17 (29)
Postretirement benefits:      
Other Comprehensive Income Loss [Line Items]      
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax 58 10 1
Other Comprehensive Income (Loss), Before Reclassifications, Tax (15) (2) 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax 43 8 1
Postretirement benefits: | Other income/expense      
Other Comprehensive Income Loss [Line Items]      
Reclassification from Accumulated Other Comprehensive Income, Before Tax 0 (26) (58)
Reclassification from AOCI, Current Period, Tax 0 7 14
Reclassification from Accumulated Other Comprehensive Income, Net of Tax $ 0 $ (19) $ (44)