Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended			6 Months Ended
	Mar. 29, 2014	Mar. 29, 2014 Domestic	Sep. 28, 2013 Domestic	Mar. 29, 2014 Canada
Changes in the carrying amount of goodwill
Balance at the beginning of the period	$ 788,184	$ 369,353	$ 369,353	$ 418,831
Foreign currency effect	(28,653)			(28,653)
Balance at the end of the period	$ 759,531	$ 369,353	$ 369,353	$ 390,178