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Organization and Nature of Business (Details) | 9 Months Ended |
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Sep. 30, 2020 | Jan. 08, 2018
Miski Mayo Joint Venture |  |
Schedule of Equity Method Investments [Line Items] |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 40.00%
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% |

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