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Pension and Other Postretirement Benefits
 3 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits Pension and Other Postretirement Benefits
Pension and other postretirement benefits (income) cost consisted of the following:
Three Months Ended
March 31,
Pensions20242023
Service cost$300 $773 
Interest cost4,628 4,895 
Expected return on plan assets(7,407)(7,534)
Amortization of prior service cost27 87 
Amortization of actuarial losses602 417 
Curtailment loss1,370 — 
Net periodic benefit income$(480)$(1,362)

Three Months Ended
March 31,
Other Postretirement Benefits20242023
Service cost$10 $13 
Interest cost262 285 
Amortization of prior service cost— 3 
Amortization of actuarial gains(40)(25)
Net periodic benefit cost$232 $276 

The service cost component of net periodic benefit cost is included within Cost of sales and Selling and administrative expenses. The components of net periodic benefit (income) cost other than the service cost component are included in Other expense (income), net on the Condensed Consolidated Statements of Income. See Note 14.