Prepaid Expenses and Other (Details) (USD $)	12 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
Prepaid expenses and other
Prepaid VAT and other taxes	$ 44,969,000	$ 46,352,000
Deferred deployment expense	17,839,000	6,918,000
Product demonstration equipment, net	46,996,000	29,449,000
Prepaid expenses	14,769,000	15,087,000
Restricted cash	12,533,000	12,994,000
Contingent consideration	0	30,195,000
Other non-trade receivables	6,251,000	6,685,000
Prepaid expenses and other	143,357,000	147,680,000
Depreciation of product demonstration equipment	$ 9,700,000	$ 4,200,000