Restructuring Charges - Activity and Liability Balances (Detail) (Restructuring Plan Two Thousand Thirteen and Two Thousand Eleven [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Jan. 31, 2014	Oct. 31, 2013
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 19,098	$ 12,191
Charged to expense	3,123	28,509
Cash payments	(6,439)	(21,010)
Adjustments		(592)
Ending Balance	15,782	19,098
Workforce [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	12,159	5,335
Charged to expense	2,553	22,671
Cash payments	(5,925)	(15,847)
Ending Balance	8,787	12,159
Facility & Other [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	6,939	6,856
Charged to expense	570	5,838
Cash payments	(514)	(5,163)
Adjustments		(592)
Ending Balance	$ 6,995	$ 6,939