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Contingencies (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Applicability, Impact and Conclusion of Environmental Loss Contingencies    
Environmental contingency accrual $ 203.2 $ 185.5
Loss Contingencies [Line Items]    
Environmental contingency accrual $ 203.2 $ 185.5
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Accrued liabilities  
New Wales Phase II East Stack    
Loss Contingencies [Line Items]    
Estimated loss contingency $ 32.3  
Maximum funding of environmental projects 32.3  
New Wales Phase II West Stack    
Loss Contingencies [Line Items]    
Estimated loss contingency 59.4  
Maximum funding of environmental projects 59.4  
Brazilian subsidiary judicial and administrative proceedings    
Loss Contingencies [Line Items]    
Estimated loss contingency 80.6  
Maximum funding of environmental projects 80.6  
Brazilian subsidiary labor claims    
Loss Contingencies [Line Items]    
Loss Contingency Accrual 67.0  
Maximum | Brazilian subsidiary judicial and administrative proceedings    
Loss Contingencies [Line Items]    
Estimated loss contingency 738.2  
Maximum funding of environmental projects 738.2  
Maximum | Brazilian Non Income Tax Proceedings    
Loss Contingencies [Line Items]    
Estimated loss contingency 608.9  
Maximum funding of environmental projects 608.9  
Maximum | Brazilian Non Income Tax Proceedings | Indemnification Agreement    
Loss Contingencies [Line Items]    
Estimated loss contingency 168.7  
Maximum funding of environmental projects 168.7  
Maximum | Brazilian Non Income Tax Proceedings | PIS And Cofins cases    
Loss Contingencies [Line Items]    
Estimated loss contingency 383.0  
Maximum funding of environmental projects 383.0  
Maximum | Brazilian subsidiary labor claims    
Loss Contingencies [Line Items]    
Estimated loss contingency 529.3  
Maximum funding of environmental projects $ 529.3