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Other Comprehensive Income (Loss) (Components Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Jan. 01, 2022 | Jan. 02, 2021
Other Comprehensive Income Loss [Line Items] |  |
Total Other Comprehensive Income (Loss), Before Tax | $ 0 | $ 77
Total Other Comprehensive Income (Loss), Tax | 0 | 0
Total Other Comprehensive Income (Loss), Net of Taxes | 0 | 77
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
Reclassification from AOCI, Current Period, Tax | 0 | 0
Reclassification from Accumulated Other Comprehensive Income, Net of Tax | 0 | 1
Investments: |  |
Other Comprehensive Income Loss [Line Items] |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | (1) | 0
Other Comprehensive Income (Loss), Before Reclassifications, Tax | 0 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | (1) | 0
Currency translation: |  |
Other Comprehensive Income Loss [Line Items] |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | (1) | 75
Other Comprehensive Income (Loss), Before Reclassifications, Tax | 0 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | (1) | 75
Postretirement benefits: |  |
Other Comprehensive Income Loss [Line Items] |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | 2 | 1
Other Comprehensive Income (Loss), Before Reclassifications, Tax | 0 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | $ 2 | $ 1

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