|
Related Party Transactions (Details) (USD $)
|
12 Months Ended | ||
|---|---|---|---|
|
Oct. 31, 2012
|
Oct. 31, 2011
|
Oct. 31, 2010
|
|
| Sponsored Funds [Abstract] | |||
| Investment advisory and administrative fees | $ 744,351,000 | $ 768,430,000 | $ 669,017,000 |
| Distribution fees | 80,920,000 | 92,770,000 | 91,750,000 |
| Service fees | 126,345,000 | 144,530,000 | 139,741,000 |
| Shareholder services fees | 2,411,000 | 2,188,000 | 2,255,000 |
| Total | 954,027,000 | 1,007,918,000 | 902,763,000 |
| Investment advisory fees waived by the Company | 8,800,000 | 13,000,000 | 18,000,000 |
| Proceeds from sales | 60,726,000 | 61,866,000 | 32,586,000 |
| Net realized (losses) gains | (92,000) | 586,000 | 3,048,000 |
| Related party expenses | 18,900,000 | 16,000,000 | 16,000,000 |
| Related party accounts receivable | 84,400,000 | 82,500,000 | |
| Employee Loan Program | |||
| Maximum loan amount available under the plan | $ 10,000,000 | ||
| Minimum fixed borrowing rate under the plan | 0.90% | ||
| Maximum fixed borrowing rate under the plan | 5.00% | ||