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 Income (Loss) [Member]
USD ($)
Appropriated Retained Earnings (Deficit) [Member]
USD ($)
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, 2009     $ 2 $ 457 $ 44,786 $ (3,078) $ (1,394)   $ 266,196 $ 91 $ 307,060 $ 43,871
Beginning 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       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  
Net 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     2 461 50,225 (3,158) (435) 0 363,190 570 410,855 67,019
Ending balance, (shares) at Oct. 31, 2010   118,326                    
Cumulative effect of adoption of new 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       1,775  
Dividends declared                 (85,805)   (85,805)  
Issuance of Non-Voting Common Stock:                        
On exercise of stock options (shares)   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  
Net 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                    
Net income 264,768             22,566 203,465 3,994 230,025 34,743
Other comprehensive income 2,583           2,583       2,583  
Dividends declared                 (88,948)   (88,948)  
Issuance of Voting Common Stock (shares)   14                    
Issuance of Voting Common Stock         56           56  
Issuance of Non-Voting Common Stock:                        
On exercise of stock options (shares) 3,208 3,208                    
On exercise of stock options       13 50,506 (535)         49,984  
Under employee stock purchase plan (shares)   158                    
Under employee stock purchase plan       1 3,653           3,654  
Under employee incentive plan (shares)   95                    
Under employee incentive plan         2,068           2,068  
Under restricted stock plan, net of forfeitures (shares)   1,229                    
Under restricted stock plan, net of forfeitures       5             5  
Stock-based compensation         56,027           56,027  
Tax benefit of stock option exercises         8,618           8,618  
Repurchase of Non-Voting Common Stock (shares)   (4,035)                    
Repurchase of Non-Voting Common Stock 106,470     (16) (91,426)       (15,028)   (106,470)  
Principal repayments on notes receivable from stock option exercises           821         821  
Net subscriptions (redemptions/distributions) of non-controlling interest holders                   (3,238) (3,238) 45,250
Deconsolidation                       (65,092)
Reclass to temporary equity                   (132) (132) 132
Purchase of non-controlling interests                       (19,864)
Other changes in non-controlling interests         (2,772)           (2,772) 2,772
Ending balance, at Oct. 31, 2012 $ 613,585   $ 2 $ 453 $ 26,730 $ (4,155) $ 3,923 $ 18,699 $ 566,420 $ 1,513 $ 613,585 $ 98,765
Ending balance, (shares) at Oct. 31, 2012   116,292