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Other Comprehensive Income (Loss) (Components Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 30, 2019 | Mar. 31, 2018 | Mar. 30, 2019 | Mar. 31, 2018
Other Comprehensive Income Loss [Line Items] |  |  |  |
Total Other Comprehensive Income (Loss), Before Tax | $ 21 | $ 4 | $ 13 | $ 5
Total Other Comprehensive Income (Loss), Tax | 1 | (2) | 6 | (1)
Total Other Comprehensive Income (Loss), Net of Taxes | 22 | 2 | 19 | 4
Derivatives accounted for as cash flow hedges: |  |  |  |
Other Comprehensive Income Loss [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | (10) | 2 | (30) | 0
Other Comprehensive Income (Loss), Before Reclassifications, Tax | 2 | (1) | 8 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | (8) | 1 | (22) | 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 | 5 | 2 | 12 | 3
Reclassification from AOCI, Current Period, Tax | 0 | 0 | (2) | (1)
Reclassification from Accumulated Other Comprehensive Income, Net of Tax | 5 | 2 | 10 | 2
Investments: |  |  |  |
Other Comprehensive Income Loss [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | 1 | 1 | 2 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Tax | (1) | (1) | (1) | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | 0 | 0 | 1 | 0
Currency translation: |  |  |  |
Other Comprehensive Income Loss [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | 25 | 5 | 34 | 6
Other Comprehensive Income (Loss), Before Reclassifications, Tax | 0 | 0 | (1) | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | 25 | 5 | 33 | 6
Postretirement benefits: |  |  |  |
Other Comprehensive Income Loss [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | 0 | (6) | (28) | (4)
Other Comprehensive Income (Loss), Before Reclassifications, Tax | 0 | 0 | 8 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | 0 | (6) | (20) | (4)
Postretirement benefits: | Other income/expense |  |  |  |
Other Comprehensive Income Loss [Line Items] |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Before Tax | 0 | 0 | 23 | 0
Reclassification from AOCI, Current Period, Tax | 0 | 0 | (6) | 0
Reclassification from Accumulated Other Comprehensive Income, Net of Tax | $ 0 | $ 0 | $ 17 | $ 0

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