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Commitments and Contingencies - Additional Information (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
facility
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Contingencies And Commitments [Line Items]      
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration] Accrued liabilities – other Accrued liabilities – other  
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Environmental Liabilities Environmental Liabilities  
Environmental Remediation Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] Other – net Other – net Other – net
Environmental Matters      
Contingencies And Commitments [Line Items]      
Pretax charge to comply U.S. federal, state and local environmental control and protection regulations $ 20.0 $ 20.0 $ 17.5
Capital expenditure to comply environmental regulations 0.7 1.6 $ 3.1
Environmental reserves 101.1 101.8  
Environmental reserves included in current liabilities $ 10.6 10.8  
Government Operations | Environmental Matters      
Contingencies And Commitments [Line Items]      
Number of facilities | facility 2    
Financial assurance to pay expected cost of decommissioning $ 68.1 68.1  
Commercial Operations | Environmental Matters      
Contingencies And Commitments [Line Items]      
Financial assurance to pay expected cost of decommissioning $ 44.3 $ 43.3