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Retirement Plans and Postretirement Benefits
 3 Months Ended
Mar. 31, 2022
Postemployment Benefits [Abstract]  
Pension and Other Postretirement Employee Benefit Plans Retirement Plans and Postretirement Benefits
The following table details the components of net periodic cost of our company-sponsored pension and other postretirement employee benefit plans for the periods presented:
 Quarter Ended March 31,
Pension Benefit Plans20222021
Service cost$0.5 $0.5 
Interest cost2.2 2.1 
Expected return on plan assets(2.8)(2.6)
Amortization of actuarial loss1.5 2.6 
Net periodic cost $1.5 $2.5 
 Quarter Ended March 31,
Other Postretirement Employee  Benefit Plans20222021
Service cost$0.1 $— 
Interest cost0.5 0.5 
Net periodic cost$0.6 $0.5 
We record the service component of net periodic cost (benefit) as part of "Cost of sales" and "Selling, general, and administrative expenses," while the non-service components of net periodic cost (benefit) are recorded to "Other non-operating expense" on our Consolidated Statements of Operations. For the quarter ended March 31, 2022 and 2021, we recorded $0.5 million and $0.4 million to "Cost of sales" and less than $0.1 million and $0.1 million to "Selling, general, and administrative expenses."