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Contingencies (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Applicability, Impact and Conclusion of Environmental Loss Contingencies |  |
Environmental contingency accrual | $ 197.5 | $ 203.2
Loss Contingencies [Line Items] |  |
Environmental contingency accrual | $ 197.5 | 203.2
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] | Accrued liabilities |
Accrued Environmental Loss Contingencies, Current | $ 90.8 | 148.9
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration] | Accrued liabilities |
Accrued Environmental Loss Contingencies, Noncurrent | $ 106.7 | $ 54.3
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other noncurrent liabilities |
New Wales Phase II East Stack |  |
Loss Contingencies [Line Items] |  |
Estimated loss contingency | $ 14.7 |
Maximum funding of environmental projects | 14.7 |
New Wales Phase II West Stack |  |
Loss Contingencies [Line Items] |  |
Estimated loss contingency | 81.5 |
Maximum funding of environmental projects | 81.5 |
Brazilian subsidiary judicial and administrative proceedings |  |
Loss Contingencies [Line Items] |  |
Estimated loss contingency | 79.3 |
Maximum funding of environmental projects | 79.3 |
Brazilian subsidiary labor claims |  |
Loss Contingencies [Line Items] |  |
Loss Contingency Accrual | 62.0 |
Maximum | Brazilian subsidiary judicial and administrative proceedings |  |
Loss Contingencies [Line Items] |  |
Estimated loss contingency | 559.2 |
Maximum funding of environmental projects | 559.2 |
Maximum | Brazilian Non Income Tax Proceedings |  |
Loss Contingencies [Line Items] |  |
Estimated loss contingency | 601.8 |
Maximum funding of environmental projects | 601.8 |
Maximum | Brazilian Non Income Tax Proceedings | Indemnification Agreement |  |
Loss Contingencies [Line Items] |  |
Estimated loss contingency | 204.0 |
Maximum funding of environmental projects | 204.0 |
Maximum | Brazilian Non Income Tax Proceedings | PIS And Cofins cases |  |
Loss Contingencies [Line Items] |  |
Estimated loss contingency | 311.9 |
Maximum funding of environmental projects | 311.9 |
Maximum | Brazilian subsidiary labor claims |  |
Loss Contingencies [Line Items] |  |
Estimated loss contingency | 377.1 |
Maximum funding of environmental projects | $ 377.1 |

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