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Other Retirement Plans (Tables)
 3 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Schedule of Covered Employees and Contributions, Multiemployer Plans Total contributions to multiemployer plans and the related number of employees covered by these plans for the periods indicated were as follows:
Multiemployer Plans
Covered Employees
Contributions (in millions)
LowHighPensionOther MultiemployerTotal
For the Three Months Ended March 31:
20247,290 9,448 $28.1 $10.0 $38.1 
20236,806 7,581 $21.8 $13.4 $35.2