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Restructuring Charges - Activity and Liability Balances (Detail) (Restructuring Plan 2011 [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Jan. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Restructuring Reserve Disclosures [Abstract]
Beginning Balance	$ 12,191	$ 7,308
Charged to expense		13,602	8,038
Cash payments	(4,264)	(8,719)	(730)
Adjustments to accrual	(531)
Ending Balance	7,396	12,191	7,308
Workforce [Member]
Restructuring Reserve Disclosures [Abstract]
Beginning Balance	5,335	1,076
Charged to expense		9,721	1,389
Cash payments	(2,641)	(5,462)	(313)
Adjustments to accrual
Ending Balance	2,694	5,335	1,076
Facility & Other [Member]
Restructuring Reserve Disclosures [Abstract]
Beginning Balance	6,856	6,232
Charged to expense		3,881	6,649
Cash payments	(1,623)	(3,257)	(417)
Adjustments to accrual	(531)
Ending Balance	$ 4,702	$ 6,856	$ 6,232

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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- Definition

Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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