Income Taxes - Effective income tax rate reconciliation to statutory federal rate (Details)	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%	21.00%	21.00%
State and local income taxes	0.90%	2.10%	(0.20%)
Tax related to international activities	2.30%	1.20%	2.70%
Cash surrender value of life insurance	(0.10%)	(0.10%)	0.50%
Foreign derived intangible income deduction	(1.50%)	(1.10%)	(3.70%)
Research tax credit	(0.60%)	(0.70%)	(0.80%)
Share-based compensation	(1.20%)	(1.00%)	(1.30%)
Other	0.10%	0.80%	0.30%
Effective income tax rate	20.90%	22.20%	18.50%