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Income Taxes Income Tax Valuation Allowance (Details) - USD ($) $ in Millions | 12 Months Ended
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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

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- Definition The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition A description of and reason for the change during the period in the valuation allowance for a specified deferred tax asset. + References No definition available. + Details
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