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Income Taxes Income Tax Valuation Allowance (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Valuation Allowance [Line Items]      
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ 512.0 $ 135.2 $ 91.7
Deferred Tax Assets, Valuation Allowance, Net 1,421.9 909.9 774.7
Tax Credit Carryforward, Valuation Allowance 531.0 83.6 111.2
Foreign Tax Authority      
Valuation Allowance [Line Items]      
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ 6.5 $ 7.0 3.4
Valuation Allowance, Deferred Tax Asset, Explanation of Change 0.2 million 46.8 million  
United States      
Valuation Allowance [Line Items]      
Operating Loss Carryforwards, Valuation Allowance   $ 1.5 2.4
Vale Fertilizantes S.A.      
Valuation Allowance [Line Items]      
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ 12.7 $ 13.2 $ 13.9