Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Cash Flows From Operating Activities:    
Net income $ 133,247 $ 127,640
Adjustments to reconcile net income to net cash (used for) provided by operating activities:    
Depreciation and amortization 11,610 12,597
Amortization of deferred sales commissions 9,591 11,372
Stock-based compensation 26,884 29,320
Deferred income taxes (1,755) (5,176)
Net gains on investments and derivatives (6,226) (7,680)
Equity in net income of affiliates, net of amortization (8,127) (2,383)
Dividends received from affiliates 10,163 10,534
Consolidated CLO entity operating activities:    
Net losses (gains) on bank loans, other investments and note obligations 2,739 (7,963)
Amortization of investments (403) (532)
Net (decrease) increase in other assets and liabilities, including cash (29,244) 7,012
Changes in operating assets and liabilities:    
Investment advisory fees and other receivables (13,692) 1,665
Investments in trading securities (127,402) (58,759)
Deferred sales commissions (9,516) (5,494)
Other assets 32,715 (31,142)
Accrued compensation (60,286) (61,329)
Accounts payable and accrued expenses (3,443) 1,949
Other liabilities (18,947) 26,727
Net cash (used for) provided by operating activities (52,092) 48,358
Cash Flows From Investing Activities:    
Additions to equipment and leasehold improvements (2,158) (2,479)
Net cash paid in acquisition (86,429) (12,335)
Cash paid for intangible assets (300) (200)
Proceeds from sales of investments 63,184 47,407
Purchase of investments (662) (6,274)
Consolidated CLO entity investing activities:    
Proceeds from sales and maturities of bank loans and other investments 199,601 89,308
Purchase of bank loans and other investments (85,412) (96,525)
Net cash provided by investing activities 87,824 18,902
Cash Flows From Financing Activities:    
Purchase of additional non-controlling interest (43,507)  
Proceeds from issuance of subsidiary equity 1,092  
Proceeds from issuance of Voting Common Stock 0 56
Proceeds from issuance of Non-Voting Common Stock 86,536 11,687
Repurchase of Voting Common Stock (73)  
Repurchase of Non-Voting Common Stock (22,723) (51,669)
Principal repayments on notes receivable from stock option exercises 1,611 481
Excess tax benefit of stock option exercises 13,118 1,162
Dividends paid (166,980) (43,982)
Net subscriptions received from (redemptions/distributions paid to) non-controlling interest holders 37,189 18,666
Consolidated CLO entity financing activities:    
Principal repayments of senior notes (83,742)  
Net cash used for financing activities (177,479) (63,599)
Effect of currency rate changes on cash and cash equivalents (194) 94
Net (decrease) increase in cash and cash equivalents (141,941) 3,755
Cash and cash equivalents, beginning of period 462,076 510,913
Cash and cash equivalents, end of period 320,135 514,668
Supplemental Cash Flow Information:    
Cash paid for interest 16,478 16,320
Cash paid for interest by consolidated CLO entity 7,920 8,715
Cash paid for income taxes, net of refunds 61,016 86,090
Supplemental Disclosure of Non-Cash Information:    
Increase in equipment and leasehold improvements due to non-cash additions 0 180
Exercise of stock options through issuance of notes receivable 4,734 211
Deconsolidations of Sponsored Investment Funds:    
Decrease in investments (14,461) (6,639)
Decrease in non-controlling interests $ (13,969) $ (6,276)