CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 419,924	$ 384,735	$ 366,794
Other comprehensive income (loss):
Foreign currency translation adjustment	(326)	8,267	(29,401)
Change in fair value of interest rate swap agreements, net of tax	(7,453)	17,714	33,633
Effects of post-retirement adjustments, net of tax	173	44	983
Total other comprehensive income (loss), net of tax	(7,606)	26,025	5,215
Comprehensive income	$ 412,318	$ 410,760	$ 372,009