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EMPLOYEE BENEFIT PLANS (Tables)
9 Months Ended
Sep. 30, 2020
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,
 2020201920202019
 (In thousands)
Company-administered plans:
Service cost$2,967 $2,449 $8,921 $8,264 
Interest cost17,463 21,301 52,348 64,165 
Expected return on plan assets(24,304)(22,350)(72,515)(67,615)
Curtailment loss6,303 — 6,303 — 
Amortization of:
Net actuarial loss7,597 8,170 22,749 23,212 
Prior service cost187 167 559 533 
10,213 9,737 18,365 28,559 
Union-administered plans2,769 2,718 8,346 7,876 
Net pension expense$12,982 $12,455 $26,711 $36,435 
Company-administered plans:
U.S.$12,215 $11,067 $25,048 $33,199 
Non-U.S.(2,002)(1,330)(6,683)(4,640)
10,213 9,737 18,365 28,559 
Union-administered plans2,769 2,718 8,346 7,876 
Net pension expense$12,982 $12,455 $26,711 $36,435