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SHARE-BASED COMPENSATION PLANS - Additional Information (Detail) (USD $)
1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended
Jul. 31, 2010
Oct. 31, 2011
Oct. 31, 2010
Oct. 31, 2009
Oct. 31, 2011
2006 Equity Incentive Plan
Oct. 31, 2011
Employee Stock Options
Year
Oct. 31, 2011
Employee Stock Options
Minimum
Oct. 31, 2011
Employee Stock Options
Maximum
Oct. 31, 2011
Restricted stock units
Year
Oct. 31, 2011
Performance shares
Year
Oct. 31, 2011
Performance shares
Minimum
Oct. 31, 2011
Performance shares
Maximum
Oct. 31, 2011
Time-Vested Plan
Oct. 31, 2011
1996 and 2002 Price-Vested Plans
CompensationPlan
Oct. 31, 2011
1996 and 2002 Price-Vested Plans
Minimum
Oct. 31, 2011
1996 and 2002 Price-Vested Plans
Maximum
Oct. 31, 2011
Executive Stock Option Plan (Age-Vested Plan)
Year
Oct. 31, 2011
Executive Stock Option Plan (Age-Vested Plan)
Option Holders Reaching Their 61st Birthday
Oct. 31, 2011
Executive Stock Option Plan (Age-Vested Plan)
Option Holders Reaching Their 64th Birthday
Mar. 09, 2004
Employee Stock Purchase Plan
Oct. 31, 2011
Employee Stock Purchase Plan
Oct. 31, 2010
Employee Stock Purchase Plan
Oct. 31, 2009
Employee Stock Purchase Plan
Mar. 09, 2004
Employee Stock Purchase Plan
Minimum
Compensation Related Costs Share Based Payments Disclosure [Line Items]                                                
Reversal of share-based compensation expense $ 3,400,000                                              
Reversal of share-based compensation expense, net of taxes 2,000,000                                              
Total shares exercised for share-based compensation plans   570,425 850,855 494,843   36,000             111,000 295,000     7,000              
Total intrinsic value of the shares exercised   6,700,000 8,400,000 3,000,000                                        
Total fair value of shares vested   2,400,000 8,100,000 3,800,000                                        
Weighted average fair values of the purchase rights granted                 $ 20.39                       $ 1.16 $ 1.03 $ 0.86  
Authorized for issuance         5,250,000                             3,000,000        
Shares of stock issued under the plan                                         165,455 190,340 219,067  
Percentage of purchase price of fair market value of the Company's common stock on the last trading day of the month                                       95.00%        
Weighted average price                                         $ 22.02 $ 19.65 $ 16.29  
Percentage of compensation to purchase                                       10.00%        
Aggregate purchases                                         3,600,000 3,700,000 3,600,000  
Annual limit on purchase of stock                                       25,000        
Shares available for award         530,648                               937,379      
Percentage of the awards that vest per year           25.00%             20.00%         50.00% 50.00%          
Vesting period             1 year 5 years         1 year   4 years 8 years 1 year             6 months
Options expire after the date of grant           7 years             121 months 10 years                    
Total unrecognized compensation cost, net of estimated forfeitures           $ 4,900,000     $ 13,200,000 $ 6,100,000             $ 500,000              
Weighted-average vesting period           2.60     2.23 1.44             7.90              
Percentage of the awards that vest on the second anniversary of the grant                 50.00%                              
Percentage of the awards that vest on the fourth anniversary of the grant                 50.00%                              
Percentage of the awards that vest on the first anniversary of the grant                     0.00% 150.00%                        
Number of plans                           2