v3.26.1
Fair Value Measurements (Details) - EBP 019 - Master Trust - USD ($)
Dec. 31, 2025
Dec. 31, 2024
EBP, Master Trust [Line Items]    
Total Investments $ 1,211,953,003 $ 1,108,954,708
Mosaic Company common stock    
EBP, Master Trust [Line Items]    
Total Investments 13,661,386 14,786,436
Mutual funds    
EBP, Master Trust [Line Items]    
Total Investments 90,608,478 94,246,522
Common/collective trust funds    
EBP, Master Trust [Line Items]    
Total Investments 1,100,476,410 979,257,298
Money market fund    
EBP, Master Trust [Line Items]    
Total Investments 7,206,729 20,664,452
Interest bearing cash    
EBP, Master Trust [Line Items]    
Total Investments   20,664,452
Level 1    
EBP, Master Trust [Line Items]    
Total Investments 111,476,593 129,697,410
Level 1 | Mosaic Company common stock    
EBP, Master Trust [Line Items]    
Total Investments 13,661,386 14,786,436
Level 1 | Mutual funds    
EBP, Master Trust [Line Items]    
Total Investments 90,608,478 94,246,522
Level 1 | Common/collective trust funds    
EBP, Master Trust [Line Items]    
Total Investments 0 0
Level 1 | Money market fund    
EBP, Master Trust [Line Items]    
Total Investments 7,206,729  
Level 1 | Interest bearing cash    
EBP, Master Trust [Line Items]    
Total Investments   20,664,452
Level 2    
EBP, Master Trust [Line Items]    
Total Investments 1,100,476,410 979,257,298
Level 2 | Mosaic Company common stock    
EBP, Master Trust [Line Items]    
Total Investments 0 0
Level 2 | Mutual funds    
EBP, Master Trust [Line Items]    
Total Investments 0 0
Level 2 | Common/collective trust funds    
EBP, Master Trust [Line Items]    
Total Investments 1,100,476,410 979,257,298
Level 2 | Money market fund    
EBP, Master Trust [Line Items]    
Total Investments 0  
Level 2 | Interest bearing cash    
EBP, Master Trust [Line Items]    
Total Investments   0
Level 3    
EBP, Master Trust [Line Items]    
Total Investments 0 0
Level 3 | Mosaic Company common stock    
EBP, Master Trust [Line Items]    
Total Investments 0 0
Level 3 | Mutual funds    
EBP, Master Trust [Line Items]    
Total Investments 0 0
Level 3 | Common/collective trust funds    
EBP, Master Trust [Line Items]    
Total Investments 0 0
Level 3 | Money market fund    
EBP, Master Trust [Line Items]    
Total Investments $ 0  
Level 3 | Interest bearing cash    
EBP, Master Trust [Line Items]    
Total Investments   $ 0