Effective Portion of Foreign Currency Forward Contracts Designated as Cash Flow Hedges (Detail) (Foreign currency forward contracts, USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 28, 2014	Mar. 29, 2013	Mar. 28, 2014	Mar. 29, 2013
Foreign currency forward contracts
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive income (Effective Portion)	$ (1.1)	$ 2.0	$ 2.1	$ 2.3
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Net Earnings (Effective Portion)	$ 1.7	$ 0.2	$ 1.3	$ 1.0