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Acquisitions and Divestitures of and Investments in Businesses and Technologies Business Combinations (Details) - USD ($)
$ in Thousands
3 Months Ended
Nov. 13, 2019
Nov. 01, 2019
Apr. 30, 2020
Jan. 31, 2020
Business Combination, Description [Abstract]        
Business Combination, Consideration Transferred     $ 0  
Redeemable noncontrolling interest payable     17,172 $ 0
Redeemable Noncontrolling Interest Payable, Noncurrent     8,758 5,936
Applied Technology [Member] | Smart Ag [Member]        
Business Combination, Description [Abstract]        
Business Acquisition, Name of Acquired Entity   Smart Ag, Inc.    
Business Acquisition, Effective Date of Acquisition   Nov. 01, 2019    
Applied Technology [Member] | Dot Technology [Member]        
Business Combination, Description [Abstract]        
Business Acquisition, Name of Acquired Entity DOT      
Business Acquisition, Effective Date of Acquisition Nov. 13, 2019      
Redeemable Noncontrolling Interest, Percentage of Voting Interests Acquired 60.00%      
Redeemable noncontrolling interest payable     17,172  
Redeemable Noncontrolling Interest Payable, Noncurrent     $ 4,985  
Applied Technology [Member] | Smart Ag and DOT [Member]        
Business Combination, Description [Abstract]        
Business Combination, Consideration Transferred       $ 54,000