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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. 31, 2018 | Apr. 01, 2017 | Mar. 31, 2018 | Apr. 01, 2017
Other Comprehensive Income Loss [Line Items] |  |  |  |
Total Other Comprehensive Income (Loss), Before Tax | $ 4 | $ 7 | $ 5 | $ (7)
Total Other Comprehensive Income (Loss), Tax | (2) | 2 | (1) | 1
Total Other Comprehensive Income (Loss), Net of Taxes | 2 | 9 | 4 | (6)
Derivatives accounted for as cash flow hedges: |  |  |  |
Other Comprehensive Income Loss [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | 2 | (1) | 0 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Tax | (1) | 0 | 0 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | 1 | (1) | 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 | 2 | (3) | 3 | 1
Reclassification from AOCI, Current Period, Tax | 0 | 1 | (1) | (1)
Reclassification from Accumulated Other Comprehensive Income, Net of Tax | 2 | (2) | 2 | 0
Investments: |  |  |  |
Other Comprehensive Income Loss [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | 1 | 1 | 0 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Tax | (1) | 0 | 0 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | 0 | 1 | 0 | 0
Currency translation: |  |  |  |
Other Comprehensive Income Loss [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax | 5 | 9 | 6 | (5)
Other Comprehensive Income (Loss), Before Reclassifications, Tax | 0 | 0 | 0 | 0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax | 5 | 9 | 6 | (5)
Postretirement benefits |  |  |  |
Other Comprehensive Income Loss [Line Items] |  |  |  |
Total Other Comprehensive Income (Loss), Before Tax | (6) | 1 | (4) | (3)
Total Other Comprehensive Income (Loss), Tax | 0 | 1 | 0 | 2
Total Other Comprehensive Income (Loss), Net of Taxes | $ (6) | $ 2 | $ (4) | $ (1)

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- Definition Amount before tax and reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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