Other Comprehensive Income (Loss) (Components Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Jan. 01, 2022
Other Comprehensive Income Loss [Line Items]
Total Other Comprehensive Income (Loss), Before Tax	$ 82	$ 0
Total Other Comprehensive Income (Loss), Tax	0	0
Total Other Comprehensive Income (Loss), Net of Taxes	82	0
Derivatives accounted for as cash flow hedges: | Interest Expense [Member]
Other Comprehensive Income Loss [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Before Tax	1	0
Reclassification from AOCI, Current Period, Tax	0	0
Reclassification from Accumulated Other Comprehensive Income, Net of Tax	1	0
Investments:
Other Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax	0	(1)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	0	0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax	0	(1)
Currency translation:
Other Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax	81	(1)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	0	0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax	81	(1)
Postretirement benefits:
Other Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Before Reclassifications, Before Tax	0	2
Other Comprehensive Income (Loss), Before Reclassifications, Tax	0	0
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax	$ 0	$ 2