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Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Related Party Transaction [Line Items]
Indemnification asset	$ 24.9		$ 21.0
Transactions with non-consolidated companies included in net sales	513.0	$ 157.4
Transactions with non-consolidated companies included in cost of sales	511.1	217.7
Investee
Related Party Transaction [Line Items]
Net amount due from our non-consolidated companies	156.8		63.0
Indemnification asset	$ 24.9		21.0
Beneficial Owner
Related Party Transaction [Line Items]
Mosaic's ownership percentage	50.00%
Bridge loans to affiliate	$ 74.7		$ 74.7
Allowance against bridge loans to affiliates	54.2
Equity Method Investee
Related Party Transaction [Line Items]
Transactions with non-consolidated companies included in net sales	$ 3.3	$ 1.6
Percent of joint venture production Mosaic expects to market	25.00%

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Percent of joint venture production Mosaic expects to market

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Direct costs arising from transactions with related parties who are not affiliates or joint Ventures. These costs are categorized as cost of goods sold.

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