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Employee Benefit Plans - Stock Options and Restricted Stock Units Under all Equity Plans (Except 2005 Director's Plan) (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2013
Oct. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]        
Weighted- Average Exercise Price per Share, Options Exercised $ 26.06 $ 24.47 $ 24.34  
Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Available for Grant, Beginning Balance [1] 12,155 8,472 7,352  
Available for Grant, Options Granted [1] (1,908) (1,686) (1,704)  
Available for Grant, Options Canceled/forfeited/expired [1] 230 163 159  
Available for Grant, Restricted stock units granted [1],[2] (2,707) (2,468) (2,519)  
Available for Grant, Restricted stock units forfeited [1],[2] 313 174 184  
Available for Grant, Additional shares reserved [1] 3,800 7,500 5,000  
Available for Grants, Ending balance [1] 11,883 12,155 8,472 7,352
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Options Outstanding, Options Granted 1,942 1,686 1,704  
Options Outstanding, Options Assumed [3] 133 843 158  
Options Outstanding, Options Exercised (2,125) (2,103) (4,173)  
Options Outstanding, Options Canceled/forfeited/expired (411) (402) (182)  
Options Outstanding, Vested and expected to vest 7,192      
Options Outstanding, Exercisable 3,673      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]        
Weighted- Average Exercise Price per Share, Beginning Balance $ 29.81 $ 26.87 $ 24.64  
Weighted- Average Exercise Price per Share, Options Granted 45.14 38.65 34.10  
Weighted- Average Exercise Price per Share, Options Assumed [3] 38.97 24.63 23.60  
Weighted- Average Exercise Price per Share, Options Exercised 26.06 24.47 24.34  
Weighted- Average Exercise Price per Share, Options Canceled/forfeited/expired 33.51 27.44 24.17  
Weighted- Average Exercise Price per Share, Ending Balance 34.94 $ 29.81 $ 26.87 $ 24.64
Weighted- Average Exercise Price per Share, Vested and expected to vest 34.84      
Weighted- Average Exercise Price per Share, Exercisable $ 29.80      
Weighted Average Remaining Contractual Life, options outstanding 4 years 8 months 1 day 4 years 7 months 28 days 4 years 3 months 18 days 3 years 8 months 16 days
Weighted-Average Remaining Contractual Life , Vested and expected to vest 4 years 7 months 24 days      
Weighted-Average Remaining Contractual Life , Exercisable 3 years 7 months 6 days      
Aggregate Intrinsic Value, Beginning Balance $ 86,537 $ 71,700 $ 80,950  
Aggregate Intrinsic Value, Ending Balance 109,627 $ 86,537 $ 71,700 $ 80,950
Aggregate Intrinsic Value, Vested and expected to vest 108,887      
Aggregate Intrinsic Value, Exercisable $ 74,121      
Stock Option | All Stock Plans        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Options Outstanding, Beginning Balance 7,750 7,726 10,219  
Options Outstanding, Ending Balance 7,289 7,750 7,726 10,219
[1] Excluding shares reserved for future issuance under the 2005 Directors Plan.
[2] These amounts do not reflect the actual number of restricted stock units granted or forfeited but rather the effect on the total remaining shares available for future grants after the application of the share reserve ratio. For more information about the share reserve ratio, please see Restricted Stock Units above.
[3] The Company assumed options outstanding under various plans through acquisitions.