Effective Portion of Foreign Currency Forward Contracts Designated as Cash Flow Hedges (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 29, 2012	Jul. 01, 2011	Jun. 29, 2012	Jul. 01, 2011
Foreign Exchange Contracts
Derivative
Gain (Loss) Recognized in Other Comprehensive Income (Effective Portion)	$ (0.5)	$ 0	$ 0.7	$ (0.5)
Revenues
Derivative
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Net Earnings (Effective Portion)	$ 0.2	$ 0	$ 0.3	$ (1.0)