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