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Document and Entity Information
Dec. 31, 2023
Dec. 15, 2023
Cover [Abstract]    
Document Type   8-K
Document Period End Date   Dec. 15, 2023
Entity Registrant Name   MOSAIC CO
Entity Incorporation, State or Country Code   DE
Entity File Number   001-32327
Entity Tax Identification Number   20-1026454
Entity Address, Address Line One   101 East Kennedy Blvd.
Entity Address, Address Line Two   Suite 2500
Entity Address, City or Town   Tampa,
Entity Address, State or Province   FL
Entity Address, Postal Zip Code   33602
City Area Code   800
Local Phone Number   918-8270
Written Communications   false
Soliciting Material   false
Pre-commencement Tender Offer   false
Pre-commencement Issuer Tender Offer   false
Title of each class   Common Stock, par value $0.01 per share
Trading Symbol   MOS
Security Exchange Name   NYSE
Entity Emerging Growth Company   false
Entity Central Index Key   0001285785
Amendment Flag   false
Current Fiscal Year End Date --12-31