Portion of Foreign Currency Forward Contracts Designated as Cash Flow Hedges (Detail) (Forward Foreign Exchange Contracts, USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 29, 2013	Mar. 30, 2012	Mar. 29, 2013	Mar. 30, 2012
Forward Foreign Exchange Contracts
Derivative [Line Items]
Gain (Loss) Recognized in other Comprehensive income	$ 2.0	$ 1.3	$ 2.3	$ 1.2
Gain (Loss) Reclassified from Accumulated O Comprehensive Income into Net Earnings	$ 0.2	$ 0.2	$ 1.0	$ 0.1