Income Taxes (Details) - USD ($) $ in Millions		9 Months Ended
	Sep. 30, 2012	Jun. 28, 2015	Jun. 29, 2014
Income Taxes
Effective tax rate (as a percent)		30.60%	29.40%
Undistributed earnings of foreign subsidiaries		$ 58.7
Loss carry-forwards in foreign jurisdictions, valuation allowance		7.6
Represents the period of projected cumulative pre-tax losses in certain foreign jurisdictions	36 months
R&E credits		$ 1.2