Outstanding Foreign Currency Forward Contracts That Were Entered into to Hedge Balance Sheet Exposures (Detail) (USD $) In Millions, unless otherwise specified	Sep. 28, 2012
Notional Value Sold
Derivative [Line Items]
Notional Value	$ 287.5
Notional Value Sold | Australian Dollar
Derivative [Line Items]
Notional Value	19.5
Notional Value Sold | Canadian Dollar
Derivative [Line Items]
Notional Value	7.0
Notional Value Sold | Danish Krona
Derivative [Line Items]
Notional Value	2.2
Notional Value Sold | Euro
Derivative [Line Items]
Notional Value	200.2
Notional Value Sold | Indian Rupee
Derivative [Line Items]
Notional Value	3.9
Notional Value Sold | Japanese Yen
Derivative [Line Items]
Notional Value	51.4
Notional Value Sold | Norwegian Krone
Derivative [Line Items]
Notional Value	3.3
Notional Value Sold | Swiss Franc
Derivative [Line Items]
Notional Value	0
Notional Value Purchased
Derivative [Line Items]
Notional Value	69.1
Notional Value Purchased | Australian Dollar
Derivative [Line Items]
Notional Value	0
Notional Value Purchased | Canadian Dollar
Derivative [Line Items]
Notional Value	0
Notional Value Purchased | Danish Krona
Derivative [Line Items]
Notional Value	0
Notional Value Purchased | Euro
Derivative [Line Items]
Notional Value	0
Notional Value Purchased | Indian Rupee
Derivative [Line Items]
Notional Value	0
Notional Value Purchased | Japanese Yen
Derivative [Line Items]
Notional Value	0
Notional Value Purchased | Norwegian Krone
Derivative [Line Items]
Notional Value	0
Notional Value Purchased | Swiss Franc
Derivative [Line Items]
Notional Value	$ 69.1