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Retirement and Pension Plans (Tables)
3 Months Ended
Mar. 31, 2021
Retirement Benefits [Abstract]  
Components of Net Periodic Pension Benefit Expense (Income)
The components of net periodic pension benefit expense (income) were as follows:
Three Months Ended
March 31,
20212020
(In thousands)
Defined benefit plans:
Service cost$2,021 $1,950 
Interest cost4,567 5,636 
Expected return on plan assets(14,174)(13,650)
Amortization of net actuarial loss and other4,353 3,976 
Pension income(3,233)(2,088)
Other plans:
Defined contribution plans8,455 10,025 
Foreign plans and other2,234 2,041 
Total other plans10,689 12,066 
Total net pension expense$7,456 $9,978