FAIR VALUE MEASUREMENTS, Level 3 contingent consideration (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Oct. 31, 2013
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Decrease in value of contingent consideration	$ (19,516)	$ (1,195)
Accrued expenses and other current liabilities	86,067		105,734
Other long-term liabilities	86,623		83,976
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balances as of October 31, 2013, Liabilities	29,310
Decrease in value of contingent consideration	(19,516)
Balances as of July 31, 2014, Liabilities	9,794
Accrued expenses and other current liabilities	2,090
Other long-term liabilities	7,704
Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	$ 9,794