Income Taxes (Provision for Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Sep. 29, 2019
Income Tax Disclosure [Abstract]
Current taxes: U.S. federal	$ 681.8	$ 49.9	$ 1,414.3
Current taxes: U.S. state and local	190.0	36.9	447.8
Current taxes: Foreign	409.8	181.4	458.3
Total current taxes	1,281.6	268.2	2,320.4
Deferred taxes: U.S. federal	10.4	(8.4)	(1,074.5)
Deferred taxes: U.S. state and local	(6.4)	(4.8)	(322.4)
Deferred taxes: Foreign	(129.0)	(15.3)	(51.9)
Total deferred taxes	(125.0)	(28.5)	(1,448.8)
Total income tax expense	$ 1,156.6	$ 239.7	$ 871.6