Supplemental Balance Sheet Information (Property, Plant and Equipment, net) (Details) - USD ($) $ in Millions	Oct. 01, 2023	Oct. 02, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 17,310.2	$ 15,609.8
Accumulated depreciation	(9,923.1)	(9,049.3)
Property, plant and equipment, net	7,387.1	6,560.5
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	46.1	46.1
Building [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	666.5	555.4
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	10,133.7	9,066.8
Store equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,332.5	3,018.2
Roasting equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	859.4	838.5
Furniture, fixtures and other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,664.5	1,526.1
Work in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 607.5	$ 558.7