Pension and Other Postretirement Benefits - Amounts Related to Defined Pension Plans Recognized in Accumulated Other Comprehensive (Loss) Income (Details) - Pension plans contribution [Member] - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Unrecognized Net Actuarial Losses	$ 291,650	$ 284,054
Unrecognized Net Prior Service Costs	1,728	1,772
Unrecognized Transition Obligations	0	76
Total	$ 293,378	$ 285,902