Prepaid Expenses and Other (Details) (USD $)	6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Oct. 31, 2011
Prepaid expenses and other
Prepaid VAT and other taxes	$ 30,254,000		$ 44,969,000
Deferred deployment expense	23,606,000		17,839,000
Product demonstration equipment, net	29,250,000		46,996,000
Prepaid expenses	12,204,000		14,769,000
Restricted cash	27,977,000		12,533,000
Other non-trade receivables	10,583,000		6,251,000
Prepaid expenses and other	133,874,000		143,357,000
Depreciation of product demonstration equipment	$ 4,200,000	$ 4,500,000