Supplemental Balance Sheet Information (Property, Plant And Equipment, net) (Details) - USD ($) $ in Millions	Jul. 02, 2017	Oct. 02, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 11,233.9	$ 10,573.3
Accumulated depreciation	(6,534.1)	(6,039.5)
Property, plant and equipment, net	4,699.8	4,533.8
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	46.8	46.6
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	475.7	458.4
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	6,200.2	5,892.9
Store Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,059.1	1,931.7
Roasting Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	612.6	605.4
Furniture, Fixtures and Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,477.3	1,366.9
Work in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 362.2	$ 271.4