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Pension and Other Postretirement Benefits - Components of Net Periodic Pension Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Net periodic pension income
Settlement	$ 0	$ 837
Pension plans contribution
Net periodic pension income
Service cost	277	228
Interest cost	8,128	8,505
Expected return on plan assets	(9,572)	(10,662)
Amortization of prior service credit	(4)	(2)
Recognition of actuarial loss	2,922	2,102
Net periodic other postretirement benefit cost	$ 1,751	$ 1,008

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Amount of gain (loss) 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 gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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