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Retirement and Pension Plans (Tables)
6 Months Ended
Jun. 30, 2024
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
June 30,
Six Months Ended
June 30,
2024202320242023
(In thousands)
Defined benefit plans:
Service cost$727 $749 $1,457 $1,489 
Interest cost6,978 7,566 13,967 15,067 
Expected return on plan assets(13,619)(13,071)(27,251)(26,067)
Amortization of net actuarial loss and other2,333 2,842 4,670 5,663 
Pension income(3,581)(1,914)(7,157)(3,848)
Other plans:
Defined contribution plans10,985 10,512 25,580 24,028 
Foreign plans and other2,287 1,999 3,976 4,570 
Total other plans13,272 12,511 29,556 28,598 
Total net pension expense$9,691 $10,597 $22,399 $24,750