Property and Equipment (Details) (USD $) In Millions, unless otherwise specified	Sep. 28, 2014	Sep. 29, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 5,309	$ 4,512
Less accumulated depreciation and amortization	(2,386)	(2,084)
Property and equipment, net of accumulated depreciation and amortization	2,923	2,428
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	139	77
Building and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,628	2,427
Capitalized Real Estate Leases [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	81	33
Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,099	1,706
Construction in Progress and Equipment not yet in Service [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 362	$ 269