Pension and Other Postretirement Benefits - Funded Status of Pension Plans and Amounts Recognized in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Change in Plan Assets
Fair Value of Plans' Assets, Beginning of Year	$ 650,180
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Other Adjustments	4,335	$ (7)
Fair Value of Plans' Assets, End of Year	636,088	650,180
Amounts Recognized in Balance Sheet
Long-term prepaid pension benefit (Note 14)	70,016	70,567
Pension plans contribution [Member]
Change in Benefit Obligation
Benefit Obligation, Beginning of Year	695,911	741,009
Service Cost	1,181	963	$ 1,117
Interest Cost	35,551	32,235	22,532
Participant Contributions	434	486
Actuarial Losses	(4,575)	(32,622)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	54,130	52,625
Benefits and expenses paid	(54,130)	(52,625)
Currency Translation Adjustment	(2,031)	7,372
Plan Amendments	(51)	(50)
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement	(668)	(1,260)
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment	0	(3)
Benefit Obligation, End of Year	677,054	695,911	741,009
Change in Plan Assets
Fair Value of Plans' Assets, Beginning of Year	650,180	695,965
Actual Return on Plans' Assets	26,205	(4,063)
Company Contributions	10,104	7,842
Currency translation adjustments	(372)	3,842
Fair Value of Plans' Assets, End of Year	636,088	650,180	$ 695,965
Funded Status of Plans	(40,966)	(45,731)
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	434	486
Defined Benefit Plan, Plan Assets, Payment for Settlement	668	1,260
Amounts Recognized in Balance Sheet
Long-term prepaid pension benefit (Note 14)	70,016	70,567
Short-term Accrued Benefit Obligation	(7,401)	(7,562)
Accrued Pension Benefits	(103,581)	(108,736)
Net Amount Recognized	(40,966)	(45,731)
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change	$ 5,432	$ 406