Fair Value Measurements (Details) In Millions, unless otherwise specified	3 Months Ended					6 Months Ended
	Mar. 31, 2013 USD ($)	Jul. 03, 2011 USD ($)	Jul. 03, 2011 CAD	Mar. 28, 2010 USD ($)	Mar. 28, 2010 CAD	Mar. 31, 2013 USD ($)
Fair Value Measurements
Notional amount of each new foreign currency forward contract		$ 4.2	4.2	$ 3.9	4.2
Settlement amount of the foreign currency forward contract	3.9
Net borrowings under credit agreement						$ 182.4