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Derivative Financial Instruments (Narrative) (Details)	3 Months Ended		9 Months Ended							3 Months Ended
Derivative Financial Instruments (Narrative) (Details)	Jul. 02, 2011 USD ($)	Jul. 03, 2010 USD ($)	Jul. 02, 2011 USD ($)	Jul. 03, 2010 USD ($)	Sep. 30, 2010 USD ($)	Jul. 02, 2011 Canadian /U.S. Dollar [Member] USD ($)	Sep. 30, 2010 Canadian /U.S. Dollar [Member] USD ($)	Jul. 02, 2011 MKS Inc [Member] USD ($)	Jul. 02, 2011 MKS Inc [Member] CAD	Jul. 02, 2011 MKS Acquisition [Member] USD ($)	Jul. 02, 2011 Accrued Expenses and Other Current Liabilities [Member] USD ($)	Sep. 30, 2010 Accrued Expenses and Other Current Liabilities [Member] USD ($)
Forward contract to purchase foreign currency	$ 408,989,000		$ 408,989,000		$ 148,813,000	$ 268,805,000	$ 1,280,000	$ 305,000,000	292,000,000
Fair value of our forward contracts											9,000,000	2,000,000
Net losses on foreign currency exposures	6,116,000	508,000	9,448,000	2,196,000						4,400,000
New forward contracts to hedge exposure to foreign currency gains and losses						$ 260,000,000

Aggregate realized and unrealized loss on foreign currency transactions included in net income. Includes loss on a foreign currency forward exchange contract. Does not include foreign currency transactions designated as hedges of net investment in a foreign entity or intercompany foreign currency transactions that are of a long-term nature. Gross of tax effect.

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