Supplemental Balance Sheet Information (Property, Plant And Equipment, net) (Details) - USD ($) $ in Millions	Apr. 02, 2017	Oct. 02, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 10,887.3	$ 10,573.3
Accumulated depreciation	(6,322.8)	(6,039.5)
Property, plant and equipment, net	4,564.5	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	468.2	458.4
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	6,042.5	5,892.9
Store Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,983.7	1,931.7
Roasting Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	603.3	605.4
Furniture, Fixtures and Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,431.3	1,366.9
Work in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 311.5	$ 271.4