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Debt - Schedule of Long-Term Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Debt Instrument [Line Items]    
Debt issuance cost $ (22.4) $ (24.5)
Total long-term debt 3,110.2 3,120.1
Less: debt maturing within one year 84.4 96.5
Total long-term debt, less current portion 3,025.8 3,023.6
Pollution Control and Industrial Revenue Bonds    
Debt Instrument [Line Items]    
Unamortized discount $ 0.1 0.1
Interest Rate Percentage 6.45%  
Long-term debt, gross $ 49.9 49.9
Senior Notes    
Debt Instrument [Line Items]    
Unamortized discount 1.7 1.8
Long-term debt, gross $ 2,998.3 2,998.2
Senior Notes | Minimum    
Debt Instrument [Line Items]    
Interest Rate Percentage 3.20%  
Senior Notes | Maximum    
Debt Instrument [Line Items]    
Interest Rate Percentage 6.40%  
Revolving Credit Facility    
Debt Instrument [Line Items]    
Letters of credit outstanding amount $ 252.6  
Credit agreement, available funds $ 795.4  
Revolving Credit Facility | Line of Credit    
Debt Instrument [Line Items]    
Interest Rate Percentage 8.00%  
Long-term debt, gross $ 0.0 0.0
Foreign debt    
Debt Instrument [Line Items]    
Long-term debt, gross $ 84.4 $ 96.5
Foreign debt | Minimum    
Debt Instrument [Line Items]    
Interest Rate Percentage 12.20%  
Foreign debt | Maximum    
Debt Instrument [Line Items]    
Interest Rate Percentage 17.40%