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Organization and Nature of Business (Details)
6 Months Ended
Jun. 30, 2021
Jan. 08, 2018
Miski Mayo Joint Venture    
Schedule of Equity Method Investments [Line Items]    
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage   75.00%
MWSPC Joint Venture    
Schedule of Equity Method Investments [Line Items]    
Mosaic's ownership percentage 25.00%  
Percent of joint venture production Mosaic expects to market 25.00%