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Income Taxes (Provision For Income Taxes From Continuing Operations) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Oct. 03, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Income Tax Disclosure [Abstract]
Federal									$ 477	$ 314	$ (431)
State									98	38	114
Foreign									18	29	26
Current									575	304	583
Deferred									18	77	(874)
Income Tax Expense (Benefit)	$ 180	$ 139	$ 126	$ 148	$ 95	$ 45	$ 87	$ 154	$ 593	$ 381	$ (291)