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Retirement Plans and Postretirement Benefits
 3 Months Ended
Sep. 30, 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 September 30,Nine Months Ended September 30,
Pension Benefit Plans2022202120222021
Service cost$0.5 $0.4 $1.6 $1.4 
Interest cost2.2 2.1 6.6 6.3 
Expected return on plan assets(2.8)(2.6)(8.5)(7.9)
Amortization of actuarial loss1.5 2.5 4.6 7.7 
Net periodic cost $1.5 $2.4 $4.4 $7.4 
 Quarter Ended September 30,Nine Months Ended September 30,
Other Postretirement Employee Benefit Plans2022202120222021
Service cost$0.1 $0.2 $0.3 $0.3 
Interest cost0.5 0.6 1.5 1.5 
Amortization of actuarial loss— 0.2 — 0.2 
Net periodic cost$0.6 $1.0 $1.8 $2.0 
We record the service component of net periodic cost as part of "Cost of sales" and "Selling, general, and administrative expenses", while the non-service components of net periodic cost are recorded to "Other non-operating expense" on our Consolidated Statements of Operations. For the quarter and nine months ended September 30, 2022, we recorded $0.5 million and $1.6 million to "Cost of sales" and $0.1 million and $0.3 million to "Selling, general, and administrative expenses". For the quarter and nine months ended September 30, 2021, we recorded $0.6 million and $1.5 million to "Cost of sales" and less than $0.1 million and $0.2 million to "Selling, general, and administrative expenses".