Supplemental Balance Sheet Information (Property, Plant and Equipment, net) (Details) - USD ($) $ in Millions	Oct. 02, 2022	Oct. 03, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 15,609.8	$ 14,828.8
Accumulated depreciation	(9,049.3)	(8,459.3)
Property, plant and equipment, net	6,560.5	6,369.5
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	46.1	46.2
Building [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	555.4	587.6
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,066.8	8,637.6
Store equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,018.2	2,934.1
Roasting equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	838.5	857.2
Furniture, fixtures and other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,526.1	1,392.0
Work in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 558.7	$ 374.1