Non-Controlling and Other Beneficial Interests (Details) (USD $)	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Non Controlling And Other Beneficial Interests Details [Abstract]
Increase in redemption value of redeemable non-controlling interest	$ 5,300,000
Consolidated sponsored funds	318,000	(4,095,000)	(4,353,000)
Majority-owned subsidiaries	(15,950,000)	(16,620,000)	(14,518,000)
Non-controlling interest value adjustments	(5,311,000)	(24,320,000)	(19,866,000)
Consolidated CLO entities	4,095,000	8,450,000	(22,566,000)
Net income attributable to non-controlling and other beneficial interests	$ (16,848,000)	$ (36,585,000)	$ (61,303,000)