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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Jan. 31, 2018
Jul. 31, 2019
Jul. 31, 2018
Oct. 31, 2019
Oct. 31, 2018
Income Taxes [Line Items]              
Effective income tax rate reconciliation 20.70% 25.10%   21.70% (19.00%)    
Change in tax rate, deferred tax asset, provisional income tax benefit     $ 37,500        
Tax credit, benefit $ 2,300            
Effective income tax rate, excluding discrete items       24.20% 24.60%    
Deferred income taxes $ 83,793     $ 83,793     $ 62,793
Increase in deferred income taxes       $ 21,000      
Scenario, Forecast              
Income Taxes [Line Items]              
Effective income tax rate, excluding discrete items           24.20%