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EMPLOYEE BENEFIT PLANS (Tables)
9 Months Ended
Sep. 30, 2021
Retirement Benefits [Abstract]  
Schedule of Components of Net Periodic Benefit Cost
Components of net pension expense were as follows:
Three months ended September 30,Nine months ended September 30,
 2021202020212020
 (In thousands)
Company-administered plans:
Service cost$276 $2,967 $824 $8,921 
Interest cost14,496 17,463 43,514 52,348 
Expected return on plan assets(21,702)(24,304)(65,187)(72,515)
Curtailment loss 6,303  6,303 
Amortization of net actuarial loss and prior service cost7,056 7,784 21,184 23,308 
126 10,213 335 18,365 
Multi-employer plans2,586 2,769 7,766 8,346 
Net pension expense$2,712 $12,982 $8,101 $26,711 
Company-administered plans:
U.S.$2,227 $12,215 $6,680 $25,048 
Non-U.S.(2,101)(2,002)(6,345)(6,683)
126 10,213 335 18,365 
Multi-employer plans2,586 2,769 7,766 8,346 
Net pension expense$2,712 $12,982 $8,101 $26,711