Retirement Plans - Assumptions (Details) - Defined benefit pension plan	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Net Periodic Benefit Costs:
Discount rate (as a percent)	1.95%	1.90%	0.40%
Rate of compensation increase (as a percent)	1.75%	1.75%	1.50%
Expected long-term return on assets (as a percent)	1.50%	1.00%	1.00%
Benefit Obligation:
Discount rate (as a percent)	1.95%	1.90%
Rate of compensation increase (as a percent)	1.75%	1.75%