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Non-controlling and Other Beneficial Interests (Tables)
3 Months Ended
Jan. 31, 2018
Non Controlling And Other Beneficial Interests Table [Abstract]  
Summary of net income attributable to non-controlling and other beneficial interests
  Three Months Ended
  January 31,
 (in thousands) 2018 2017
 Consolidated sponsored funds$ (6,300)$ 15
 Majority-owned subsidiaries  (4,155)  (3,718)
 Non-controlling interest value adjustments(1)  -  73
 Net income attributable to non-controlling and    
  other beneficial interests$ (10,455)$ (3,630)
      
 (1) Relates to non-controlling interests redeemable at other than fair value.