Supplemental Balance Sheet Information (Property, Plant And Equipment, net) (Details) - USD ($) $ in Millions	Jul. 02, 2023	Oct. 02, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 16,741.2	$ 15,609.8
Accumulated depreciation	(9,687.7)	(9,049.3)
Property, plant and equipment, net	7,053.5	6,560.5
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	46.1	46.1
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	622.7	555.4
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,731.5	9,066.8
Store Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,203.9	3,018.2
Roasting Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	829.1	838.5
Furniture, Fixtures and Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,578.0	1,526.1
Work in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 729.9	$ 558.7