Leases (Narrative) (Details) (USD $) In Billions, unless otherwise specified	12 Months Ended
	Sep. 28, 2014
Property Subject to or Available for Operating Lease [Line Items]
Minimum sublease rents	$ 1.0
Lease term (in years)	20 years 0 months 0 days
Minimum [Member]
Property Subject to or Available for Operating Lease [Line Items]
Lease renewal option as lessee, minimum (in years)	5 years 0 months 0 days
Lease renewal option as lessor, minimum (in years)	5 years 0 months 0 days
Maximum [Member]
Property Subject to or Available for Operating Lease [Line Items]
Lease renewal option as lessee, minimum (in years)	20 years 0 months 0 days
Lease renewal option as lessor, minimum (in years)	20 years 0 months 0 days