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Other Comprehensive Income (Loss) (Components Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 29, 2018 | Dec. 30, 2017
Other Comprehensive Income Loss [Line Items] |  |
Total Other Comprehensive Income (Loss), Before Tax | $ (8) | $ 1
Total Other Comprehensive Income (Loss), Tax | 5 | 1
Total Other Comprehensive Income (Loss), Net of Taxes | (3) | 2
Derivatives accounted for as cash flow hedges: |  |
Other Comprehensive Income Loss [Line Items] |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | (20) | (2)
Other Comprehensive Income (Loss), Before Reclassifications, Tax | 6 | 1
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | (14) | (1)
Derivatives accounted for as cash flow hedges: | Interest Expense [Member] |  |
Other Comprehensive Income Loss [Line Items] |  |
Reclassification from Accumulated Other Comprehensive Income, Before Tax | 0 | 0
Reclassification from AOCI, Current Period, Tax | 0 | 0
Reclassification from Accumulated Other Comprehensive Income, Net of Tax | 0 | 0
Derivatives accounted for as cash flow hedges: | Cost of Sales |  |
Other Comprehensive Income Loss [Line Items] |  |
Reclassification from Accumulated Other Comprehensive Income, Before Tax | 7 | 1
Reclassification from AOCI, Current Period, Tax | (2) | (1)
Reclassification from Accumulated Other Comprehensive Income, Net of Tax | 5 | 0
Investments: |  |
Other Comprehensive Income Loss [Line Items] |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | 1 | (1)
Other Comprehensive Income (Loss), Before Reclassifications, Tax | 0 | 1
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 | 9 | 1
Other Comprehensive Income (Loss), Before Reclassifications, Tax | (1) | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | 8 | 1
Postretirement benefits |  |
Other Comprehensive Income Loss [Line Items] |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | (28) | 2
Other Comprehensive Income (Loss), Before Reclassifications, Tax | 8 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | (20) | 2
Postretirement benefits | Other income/expense |  |
Other Comprehensive Income Loss [Line Items] |  |
Reclassification from Accumulated Other Comprehensive Income, Before Tax | 23 | 0
Reclassification from AOCI, Current Period, Tax | (6) | 0
Reclassification from Accumulated Other Comprehensive Income, Net of Tax | $ 17 | $ 0

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