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Related Party Transactions (Details) - USD ($)
3 Months Ended 12 Months Ended
Oct. 15, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Related Party Transaction [Line Items]          
Ownership interest of controlling interest   50.00%      
Dividends from related parties     $ 0 $ 40,500,000 $ 29,400,000
Equity Method Investments and Joint Ventures [Abstract]          
Payments to Acquire Interest in Joint Venture     $ 1,900,000    
Rabobank | AGCO          
Equity Method Investments and Joint Ventures [Abstract]          
Ownership percentage     51.00%    
TAFE          
Related Party Transaction [Line Items]          
Dividends from related parties     $ 1,800,000 2,000,000.0 1,800,000
Cost method investment, ownership percentage 20.70%        
Beneficial ownership of related parties (in shares)     12,150,152    
Beneficial ownership of related parties, maximum shares allowed per letter agreement (in shares)     12,150,152    
Purchases from related party     $ 78,900,000 92,700,000 109,600,000
Revenue from related parties     1,300,000 1,500,000 1,800,000
PPG Industries, Inc.          
Related Party Transaction [Line Items]          
Purchases from related party     3,300,000 4,400,000 3,500,000
Praxair Inc          
Related Party Transaction [Line Items]          
Purchases from related party     $ 5,600,000 $ 6,200,000 $ 1,600,000
Tractors and Farm Equipment Limited [Member]          
Equity Method Investments and Joint Ventures [Abstract]          
Stock Repurchased During Period, Shares 461,000        
Stock Repurchased During Period, Value $ 33,900,000