SHARE-BASED COMPENSATION EXPENSE (Details) shares in Thousands	6 Months Ended
	Apr. 30, 2016 $ / shares shares
Summary of stock option activity [Roll Forward]
Shares Underlying Options Outstanding, Beginning Balance (in shares) | shares	2,293
Shares Underlying Options Outstanding, Exercised (in shares) | shares	(234)
Shares Underlying Options Outstanding, Canceled (in shares) | shares	(276)
Shares Underlying Options Outstanding, Ending Balance (in shares) | shares	1,783
Weighted average exercise price [Roll Forward]
Weighted Average Exercise Price, Beginning Balance (in dollars per share) | $ / shares	$ 24.45
Weighted Average Exercise Price, Exercised (in dollars per share) | $ / shares	9.73
Weighted Average Exercise Price, Canceled (in dollars per share) | $ / shares	39.06
Weighted Average Exercise Price, Ending Balance (in dollars per share) | $ / shares	$ 24.13