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FAIR VALUE MEASUREMENTS (Fair Value Hierarchy, by Category) (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Oct. 31, 2020
Deferred Compensation Plans [Abstract]    
Deferred compensation plans $ 214,195 $ 180,139
Liabilities:    
Contingent consideration 42,819 41,974
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans 4,322 11
Liabilities:    
Contingent consideration 0 0
Significant Other Observable Inputs (Level 2) [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans 209,873 180,128
Liabilities:    
Contingent consideration 0 0
Significant Unobservable Inputs (Level 3) [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans 0 0
Liabilities:    
Contingent consideration 42,819 41,974
Corporate Owned Life Insurance [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans 209,873 180,128
Corporate Owned Life Insurance [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans 0 0
Corporate Owned Life Insurance [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans 209,873 180,128
Corporate Owned Life Insurance [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans 0 0
Money Market Funds [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans 4,322 11
Money Market Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans 4,322 11
Money Market Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans 0 0
Money Market Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Deferred Compensation Plans [Abstract]    
Deferred compensation plans $ 0 $ 0