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Retirement and Pension Plans - Components of Net Periodic Pension Benefit Expense (Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Defined benefit plans:
Service cost	$ 572	$ 730
Interest cost	7,175	6,989
Expected return on plan assets	(13,094)	(13,632)
Amortization of net actuarial loss and other	2,019	2,337
Pension income	(3,328)	(3,576)
Other plans:
Defined contribution plans	12,504	14,595
Foreign plans and other	1,804	1,689
Total other plans	14,308	16,284
Total net pension expense	$ 10,980	$ 12,708

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Foreign plans and other.

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Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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Amount of cost (reversal of cost) for other postretirement benefits. Excludes pension benefits.

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