Consolidated Sponsored Funds (Tables)
 12 Months Ended
Oct. 31, 2012
Consolidated Sponsored Funds Table [Abstract]  
Summary of consolidated sponsored funds
 (in thousands)   2012   2011 
 Investments   $ 157,405  $ 143,517 
 Other assets    5,594    13,465 
 Other liabilities    (16,928)    (10,764) 
 Redeemable non-controlling interests    (20,072)    (25,569) 
 Net interest in consolidated sponsored funds(1) $ 125,999  $ 120,649 
            
 (1) Excludes the Company's investment in its consolidated CLO entity, which is discussed in Note 9.