Supplemental Balance Sheet Information (Property, Plant And Equipment, net) (Details) - USD ($) $ in Millions	Jun. 28, 2015	Sep. 28, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 9,431.8	$ 8,581.1
Accumulated depreciation	(5,454.1)	(5,062.1)
Property, plant and equipment, net	3,977.7	3,519.0
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	46.6	46.7
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	404.4	278.1
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,277.6	4,858.4
Store Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,645.9	1,493.3
Roasting Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	534.2	410.9
Furniture, Fixtures and Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,233.5	1,078.1
Work in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 289.6	$ 415.6