Other Comprehensive Income (Components Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Apr. 01, 2017	Apr. 02, 2016
Other Comprehensive Income Loss [Line Items]
Total Other Comprehensive Income (Loss), Before Tax	$ 7	$ 9	$ (7)	$ (1)
Total Other Comprehensive Income (Loss), Tax	2	1	1	3
Total Other Comprehensive Income (Loss), Net of Taxes	9	10	(6)	2
Derivatives accounted for as cash flow hedges [Member]
Other Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax	(1)	0	0	(2)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	0	0	0	1
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax	(1)	0	0	(1)
Derivatives accounted for as cash flow hedges [Member] | Cost of Sales [Member]
Other Comprehensive Income Loss [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Before Tax	(3)	1	1	2
Reclassification from AOCI, Current Period, Tax	1	(1)	(1)	(1)
Reclassification from Accumulated Other Comprehensive Income, Net of Tax	(2)	0	0	1
Investments [Member]
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	0	0	0	0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax	1	1	0	0
Currency translation [Member]
Other Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax	9	10	(5)	5
Other Comprehensive Income (Loss), Before Reclassifications, Tax	0	0	0	0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax	9	10	(5)	5
Postretirement benefits [Member]
Other Comprehensive Income Loss [Line Items]
Total Other Comprehensive Income (Loss), Before Tax	1	(3)	(3)	(6)
Total Other Comprehensive Income (Loss), Tax	1	2	2	3
Total Other Comprehensive Income (Loss), Net of Taxes	$ 2	$ (1)	$ (1)	$ (3)