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Financial Assets And Liabilities - Additional Information (Detail)	9 Months Ended
	Jul. 31, 2012
Financial Assets and Liabilities [Line Items]
Shipments period using hedges (in months)	One
Minimum forward contracts terms (in months)	One
Forward contracts terms (in months)	21
Maximum period for most hedge balance in OCI to be reclassified to statement of operation (in months)	12 months
Non-Designated Hedging Instrument
Financial Assets and Liabilities [Line Items]
Forward contracts terms (in months)	one
Foreign Exchange Contracts
Financial Assets and Liabilities [Line Items]
Duration of foreign exchange forward contracts	1 year
Maximum
Financial Assets and Liabilities [Line Items]
Derivative maturity period (in months)	21
Derivative maturity period of rolled over currency contracts (in years)	3

Description of the reasons for holding or issuing foreign currency exchange rate derivative instruments. Includes discussion of the objectives for holding the instruments, the context needed to understand those objectives, and the strategies for achieving those objectives. Disclosures may be more meaningful if such objectives and strategies are described in the context of an entity's overall risk management profile.

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