Consolidated Statements of Shareholders' Equity (USD $)
In Thousands, unless otherwise specified
Total
USD ($)
Voting And Non Voting Common Shares [Member]
Voting Common Stock [Member]
USD ($)
Non-Voting Common Stock [Member]
USD ($)
Additional Paid-In Capital [Member]
USD ($)
Notes Receivable From Stock Option Exercises [Member]
USD ($)
Accumulated Other Comprehensive (Loss) Income [Member]
USD ($)
Appropriated Deficit [Member]
USD ($)
Retained Earnings [Member]
USD ($)
Non Redeemable Non Controlling Interests [Member]
USD ($)
Total Permanent Equity [Member]
USD ($)
Redeemable Non Controlling Interests [Member]
USD ($)
Beginning balance, at Oct. 31, 2008     $ 2 $ 451 $ 0 $ (4,704) $ (5,135)   $ 187,904 $ 0 $ 178,518 $ 72,137
Beginning balance, (shares) at Oct. 31, 2008   115,812                    
Net income 135,525               130,107 125 130,232 5,293
Other comprehensive income             3,741       3,741  
Dividends declared                 (73,285)   (73,285)  
Issuance of Voting Common Stock (shares)   42                    
Issuance of Voting Common Stock         86           86  
Issuance of Non-Voting Common Stock:                        
On exercise of stock options (shares)   1,835                    
On exercise of stock options       7 22,960 (1,458)         21,509  
Under employee stock purchase plan (shares)   206                    
Under employee stock purchase plan       1 4,082           4,083  
Under employee incentive plan (shares)   213                    
Under employee incentive plan       1 3,612           3,613  
Under restricted stock plan, net of forfeitures (shares)   938                    
Under restricted stock plan, net of forfeitures       3             3  
Stock-based compensation         41,474           41,474  
Tax benefit of stock option exercises         13,649           13,649  
Repurchase of Non-Voting Common Stock (shares)   (1,526)                    
Repurchase of Non-Voting Common Stock 41,083     (6) (41,077)           (41,083)  
Principal repayments on notes receivable from stock option exercises           3,084         3,084  
Subscriptions (redemptions/distributions) of non-controlling interest holders                   (34) (34) (7,275)
Deconsolidation                       (4,461)
Purchase of non-controlling interests                 16,698   16,698 (17,051)
Other changes in non-controlling interests                 4,772   4,772 (4,772)
Ending balance, at Oct. 31, 2009     2 457 44,786 (3,078) (1,394)   266,196 91 307,060 43,871
Ending balance, (shares) at Oct. 31, 2009   117,520                    
Net income 201,225               174,298 1,259 175,557 25,668
Other comprehensive income             959       959  
Dividends declared                 (78,126)   (78,126)  
Issuance of Non-Voting Common Stock:                        
On exercise of stock options (shares)   3,304                    
On exercise of stock options       13 51,402 (1,944)         49,471  
Under employee stock purchase plan (shares)   158                    
Under employee stock purchase plan       1 3,887           3,888  
Under employee incentive plan (shares)   102                    
Under employee incentive plan         2,874           2,874  
Under restricted stock plan, net of forfeitures (shares)   947                    
Under restricted stock plan, net of forfeitures       4             4  
Stock-based compensation         47,858           47,858  
Tax benefit of stock option exercises         10,825           10,825  
Repurchase of Voting Common Stock (shares)   (33)                    
Repurchase of Voting Common Stock         (96)           (96)  
Repurchase of Non-Voting Common Stock (shares)   (3,672)                    
Repurchase of Non-Voting Common Stock 111,173     (14) (111,159)           (111,173)  
Principal repayments on notes receivable from stock option exercises           1,864         1,864  
Subscriptions (redemptions/distributions) of non-controlling interest holders                   (775) (775) 45,761
Deconsolidation                       (36,372)
Reclass to temporary equity                   (5) (5) 5
Purchase of non-controlling interests                       (11,244)
Other changes in non-controlling interests         (152)       822   670 (670)
Ending balance, at Oct. 31, 2010 410,855   2 461 50,225 (3,158) (435)   363,190 570 410,855 67,019
Ending balance, (shares) at Oct. 31, 2010   118,326                    
Cumulative effect of change in accounting principle               30,666 1,665   32,331  
Net income 227,574             (34,533) 214,902 2,524 182,893 44,681
Other comprehensive income             1,775       1,775  
Dividends declared                 (85,805)   (85,805)  
Issuance of Non-Voting Common Stock:                        
On exercise of stock options (shares) 3,341 3,341                    
On exercise of stock options       13 55,726 (2,224)         53,515  
Under employee stock purchase plan (shares)   144                    
Under employee stock purchase plan       1 3,766           3,767  
Under employee incentive plan (shares)   132                    
Under employee incentive plan         3,655           3,655  
Under restricted stock plan, net of forfeitures (shares)   980                    
Under restricted stock plan, net of forfeitures       4             4  
Stock-based compensation         52,030           52,030  
Tax benefit of stock option exercises         7,022           7,022  
Repurchase of Non-Voting Common Stock (shares)   (7,300)                    
Repurchase of Non-Voting Common Stock 198,627     (29) (171,577)       (27,021)   (198,627)  
Principal repayments on notes receivable from stock option exercises           941         941  
Subscriptions (redemptions/distributions) of non-controlling interest holders                   (2,139) (2,139) 120,666
Deconsolidation                       (125,844)
Reclass to temporary equity                   (66) (66) 66
Purchase of non-controlling interests                       (6,611)
Other changes in non-controlling interests         (847)           (847) 847
Ending balance, at Oct. 31, 2011 $ 461,304   $ 2 $ 450 $ 0 $ (4,441) $ 1,340 $ (3,867) $ 466,931 $ 889 $ 461,304 $ 100,824
Ending balance, (shares) at Oct. 31, 2011   115,623