Income Taxes (Details 6)	3 Months Ended	12 Months Ended
	Sep. 28, 2013 USD ($)	Sep. 27, 2014 USD ($)	Sep. 28, 2013 USD ($)	Sep. 29, 2012 USD ($)	Sep. 27, 2014 CAD
Income Taxes
Unrecognized tax benefits that would impact effective tax rate		$ 14,800,000
Indemnification receivable associated with unrecognized tax benefits		9,200,000
Maximum amount of unrecognized tax benefit indemnification					30,000,000
Accrued interest and penalties	2,000,000	2,400,000	2,000,000
Interest and penalties included in income tax expense		400,000	400,000	200,000
Gross tax contingencies, beginning balance		23,283,000	23,956,000	24,419,000
Increases from positions taken during prior periods			438,000	2,864,000
Decreases from positions taken during prior periods				(4,093,000)
Increases from positions taken during current periods		504,000	2,709,000	906,000
Decreases resulting from the lapse of the applicable statute of limitations	(200,000)	(8,948,000)	(3,820,000)	(140,000)
Gross tax contingencies, ending balance	23,283,000	14,839,000	23,283,000	23,956,000
Unrecognized tax benefits expected to be released during fiscal year 2015 due to expiration of statute of limitations		5,000,000
Undistributed international earnings		200,900,000
Deferred taxes provided on undistributed international earnings		$ 0