v3.25.2
Document and Entity Information - shares
6 Months Ended
Jun. 30, 2025
Aug. 01, 2025
Cover [Abstract]    
Document type 10-Q  
Document quarterly report true  
Document period end date Jun. 30, 2025  
Document transition report false  
Entity file number 001-32327  
Entity registrant name MOSAIC CO  
State of incorporation DE  
Employer identification number 20-1026454  
Address line one 101 East Kennedy Blvd  
Address line two Suite 2500  
City Tampa  
State FL  
Zip code 33602  
Area code 800  
Phone number 918-8270  
Title of each class Common Stock, par value $0.01 per share  
Trading symbol MOS  
Name of each exchange on which registered NYSE  
Entity current reporting status Yes  
Entity interactive data current Yes  
Entity filer category Large Accelerated Filer  
Smaller reporting company false  
Emerging growth company false  
Entity shell company false  
Entity common stock shares outstanding   317,378,326
Entity central index key 0001285785  
Amendment flag false  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Current fiscal year end date --12-31