Goodwill and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 28, 2014 Store	Sep. 29, 2013 Store	Sep. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Acquired During Period	$ 29	$ 16
Number of Stores Acquired	4	6
Finite-lived Intangible Assets Acquired	18	6
Amortization of Intangible Assets	5	5	6
Finite and Indefinite-Lived Intangible Assets [Line Items]
Finite and Indefinite-Lived Intangible Assets, Gross	127	106
Finite-Lived Intangible Assets, Accumulated Amortization	(46)	(41)
Contract-Based Intangible Assets [Member]
Finite and Indefinite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	120	102
Indefinite-Lived Intangible Assets	6	3
Finite-Lived Intangible Assets, Accumulated Amortization	(45)	(40)
Marketing-Related and Other Intangible Assets [Member]
Finite and Indefinite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1	1
Finite-Lived Intangible Assets, Accumulated Amortization	$ (1)	$ (1)