v3.25.2
Goodwill (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Goodwill [Line Items]    
Goodwill, net of accumulated amortization $ 1,061.1  
Foreign currency translation 45.1  
Goodwill, net of accumulated amortization 1,106.2  
Goodwill, Gross 1,100.0 $ 1,100.0
Potash segment    
Goodwill [Line Items]    
Goodwill, net of accumulated amortization 955.4  
Foreign currency translation 42.2  
Goodwill, net of accumulated amortization 997.6  
Mosaic Fertilizantes segment    
Goodwill [Line Items]    
Goodwill, net of accumulated amortization 93.6  
Foreign currency translation 2.9  
Goodwill, net of accumulated amortization 96.5  
Corporate, other and intersegment eliminations    
Goodwill [Line Items]    
Goodwill, net of accumulated amortization 12.1  
Foreign currency translation 0.0  
Goodwill, net of accumulated amortization $ 12.1