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Debt - Long-term (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Debt Instrument [Line Items]    
Total long-term debt $ 3,120.1 $ 2,821.7
Debt issuance cost (24.5) (16.1)
Less: debt maturing within one year 96.5 88.5
Total long-term debt, less current portion 3,023.6 2,733.2
Line of credit    
Debt Instrument [Line Items]    
Long-term debt, gross 0.0 0.0
Pollution control and industrial revenue bonds (less unamortized discounts of $0.1 and $0.1, respectively)    
Debt Instrument [Line Items]    
Unamortized discount 0.1 0.1
Total long-term debt 49.9 49.9
Senior notes (less unamortized discounts of $1.8 and $0.6, respectively)    
Debt Instrument [Line Items]    
Unamortized discount 1.8 0.6
Total long-term debt $ 2,998.2 1,899.4
2021 Term Loan Facility    
Debt Instrument [Line Items]    
Interest Rate Percentage 0.00%  
Long-term debt, gross $ 0.0 800.0
Revolving Credit Facility    
Debt Instrument [Line Items]    
Interest Rate Percentage 8.00%  
Letters of credit outstanding, amount $ 251.5  
Line of credit, remaining borrowing capacity 1,009.0  
Foreign debt    
Debt Instrument [Line Items]    
Total long-term debt $ 96.5 $ 88.5
Minimum | Senior notes (less unamortized discounts of $1.8 and $0.6, respectively)    
Debt Instrument [Line Items]    
Interest Rate Percentage 3.20%  
Minimum | Foreign debt    
Debt Instrument [Line Items]    
Interest Rate Percentage 14.60%  
Maximum | Pollution control and industrial revenue bonds (less unamortized discounts of $0.1 and $0.1, respectively)    
Debt Instrument [Line Items]    
Interest Rate Percentage 6.45%  
Maximum | Senior notes (less unamortized discounts of $1.8 and $0.6, respectively)    
Debt Instrument [Line Items]    
Interest Rate Percentage 6.40%  
Maximum | Foreign debt    
Debt Instrument [Line Items]    
Interest Rate Percentage 17.40%