Supplemental Balance Sheet Information (Property, Plant And Equipment, net) (Details) - USD ($) $ in Millions	Apr. 02, 2023	Oct. 02, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 16,450.9	$ 15,609.8
Accumulated depreciation	(9,632.3)	(9,049.3)
Property, plant and equipment, net	6,818.6	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	567.3	555.4
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,578.2	9,066.8
Store Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,179.2	3,018.2
Roasting Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	816.3	838.5
Furniture, Fixtures and Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,609.4	1,526.1
Work in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 654.4	$ 558.7