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Consolidated Sponsored Funds (Tables)
3 Months Ended
Jan. 31, 2017
Consolidated Sponsored Funds Table [Abstract]  
Summary of consolidated sponsored funds
 (in thousands) January 31, 2017 October 31, 2016
 Investments $ 374,128$ 248,036
 Other assets  10,047  10,984
 Other liabilities  (71,672)  (23,947)
 Redeemable non-controlling interests  (71,384)  (24,474)
 Net interest in consolidated sponsored funds$ 241,119$ 210,599