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Investments in Non-Consolidated Companies - MWSPC Joint Venture (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Jul. 01, 2016 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Schedule of Equity Method Investments |  |  |  |
Equity in net earnings (loss) of nonconsolidated companies |  | $ 196.0 | $ 7.8 | $ (93.8)
Investments in nonconsolidated companies |  | $ 885.9 | 691.8 |
Equity Method Investee | MWSPC |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Payments to Acquire Equity Method Investments | $ 120.0 |  |  |
Proportion of assets represented by MWSPC |  | 70.00% |  |
Proportion of liabilities represented by MWSPC |  | 62.00% |  |
Equity in net earnings (loss) of nonconsolidated companies |  | $ 194.5 | $ 5.0 | $ (97.3)
Aggregate cost of investment in phosphates greenfield mine including Mosaic's portion to date |  | $ 8,000.0 |  |
Percentage Of Total Production Expected To Market |  | 25.00% |  |
Investments in nonconsolidated companies |  | $ 770.0 |  |

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