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Retirement and Pension Plans
 9 Months Ended
Sep. 30, 2021
Retirement Benefits [Abstract]  
Retirement and Pension Plans Retirement and Pension Plans
The components of net periodic pension benefit expense (income) were as follows:
Three Months Ended
September 30,		Nine Months Ended
September 30,
2021202020212020
(In thousands)
Defined benefit plans:
Service cost$2,009 $1,979 $6,060 $5,858 
Interest cost4,563 5,657 13,711 16,893 
Expected return on plan assets(14,172)(13,681)(42,567)(40,889)
Amortization of net actuarial loss and other7,550 4,008 16,282 11,915 
Pension income(50)(2,037)(6,514)(6,223)
Other plans:
Defined contribution plans7,792 7,068 24,208 23,975 
Foreign plans and other2,074 1,934 6,431 5,807 
Total other plans9,866 9,002 30,639 29,782 
Total net pension expense$9,816 $6,965 $24,125 $23,559 
For defined benefit plans, the net periodic benefit income, other than the service cost component, is included in “Other (expense) income, net” in the consolidated statement of income.
For the nine months ended September 30, 2021 and 2020, contributions to the Company’s defined benefit pension plans were $6.4 million and $5.1 million, respectively. The Company’s current estimate of 2021 contributions to its worldwide defined benefit pension plans is in line with the range disclosed in Note 12 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2020.