Non-Controlling and Other Beneficial Interests (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Non Controlling And Other Beneficial Interests Details [Abstract]
Consolidated sponsored funds	$ (413)	$ (2,986)	$ (217)	$ (4,092)
Majority-owned subsidiaries	(3,524)	(3,690)	(7,007)	(7,589)
Non-controlling interest value adjustments	0	(666)	(2,389)	(11,313)
Consolidated CLO entities	791	(97)	1,095	3,233
Net income attributable to non-controlling and other beneficial interests	$ (3,146)	$ (7,439)	$ (8,518)	$ (19,761)