Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended					12 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014 Domestic Segment [Member]	Sep. 28, 2013 Domestic Segment [Member]	Sep. 29, 2012 Domestic Segment [Member]	Sep. 27, 2014 Canada Segment [Member]	Sep. 28, 2013 Canada Segment [Member]
Changes in the carrying amount of goodwill
Balance at the beginning of the period	$ 788,184	$ 808,076	$ 369,353	$ 369,353	$ 369,353	$ 418,831	$ 438,723
Other	(233)					(233)
Foreign currency effect	(32,056)	(19,892)				(32,056)	(19,892)
Balance at the end of the period	$ 755,895	$ 788,184	$ 369,353	$ 369,353	$ 369,353	$ 386,542	$ 418,831