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Contingencies (Details) | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2016 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jul. 24, 2020 USD ($) | Aug. 31, 2016
Applicability, Impact and Conclusion of Environmental Loss Contingencies [Abstract] |  |  |  |  |
Environmental contingency accrual |  | $ 128,500,000 | $ 57,300,000 |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  |  |  | $ 550,000 |
New Wales water loss incident |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number Of Cells With Sinkholes |  |  |  |  | 1
Number Of Cells In The Active Stack |  |  |  |  | 2
New Wales Phase II East Stack |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  | 65,000,000 |  |  |
Brazilian subsidiary judicial and administrative proceedings |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  | 62,000,000 |  |  |
Brazilian subsidiary labor claims |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency Accrual |  | 53,400,000 |  |  |
Brazilian subsidiary environmental claims |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency Accrual |  | 5,400,000 |  |  |
Brazilian subsidiary other civil contingent liabilities and other claims |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  | 3,200,000 |  |  |
Uberaba gypstacks settled litigation |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency, Damages Awarded, Value | $ 300,000 |  |  |  |
Maximum | Brazilian subsidiary judicial and administrative proceedings |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  | 774,900,000 |  |  |
Maximum | Brazilian Non Income Tax Proceedings |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  | 394,700,000 |  |  |
Maximum | Brazilian Non Income Tax Proceedings | Indemnification Agreement Vale S.A. |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  | 194,900,000 |  |  |
Maximum | Brazilian Non Income Tax Proceedings | PIS And Cofins Cases |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  | 265,400,000 |  |  |
Maximum | Brazilian subsidiary labor claims |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  | 585,700,000 |  |  |
Maximum | Brazilian subsidiary environmental claims |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  | 20,600,000 |  |  |
Maximum | Brazilian subsidiary other civil contingent liabilities and other claims |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum potential liabilitiy |  | 168,300,000 |  |  |
Minimum | New Wales water loss incident |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Financial assurance to support off-site monitoring and sinkhole remediation costs |  | $ 40,000,000 |  |  |

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