Difference Between Income Taxes Computed at Federal Statutory Rate and Provision for Income Taxes (Detail)	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Federal statutory rate	21.00%	21.00%	21.00%
Effect of:
Foreign earnings taxed at lower rates	(1.50%)	(1.40%)	(1.80%)
Foreign-derived intangible income deduction	(1.00%)	(1.10%)	(1.30%)
State income taxes, net of federal benefit	1.50%	1.50%	1.60%
Research and development credit	(1.10%)	(1.10%)	(1.10%)
Excess tax benefits relating to stock-based compensation	(0.90%)	(1.10%)	(0.70%)
Interest, net	1.00%	1.10%	0.80%
Other reconciling items, net	(1.40%)	(0.70%)	0.50%
Effective rate	17.60%	18.20%	19.00%