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EMPLOYEE BENEFIT PLANS
 3 Months Ended
Mar. 31, 2022
Retirement Benefits [Abstract]  
EMPLOYEE BENEFIT PLANS EMPLOYEE BENEFIT PLANS
Components of net pension expense for defined benefit pension plans were as follows:
Three months ended March 31,
 20222021
 (In thousands)
Company-administered plans:
Service cost$240 $368 
Interest cost15,824 14,535 
Expected return on plan assets(18,583)(21,694)
Amortization of net actuarial loss and prior service cost5,473 7,097 
Net pension expense$2,954 $306 
Company-administered plans:
U.S.$3,323 $2,363 
Non-U.S.(369)(2,057)
Net pension expense$2,954 $306 
Non-operating pension costs, net include the amortization of net actuarial loss and prior service cost, interest cost and expected return on plan assets components of pension and postretirement benefit costs, as well as any significant charges for settlements or curtailments if recognized. We also maintain other postretirement benefit plans that are not reflected in the table above as the amount of postretirement benefit expense for such plans was not material for any period presented.