CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 120,344	$ 80,577	$ 320,466	$ 227,749
Other comprehensive income (loss):
Foreign currency translation adjustment	440	(10,570)	21,946	(4,663)
Change in fair value of interest rate swap agreements, net of tax	6,467	(21,173)	11,363	(22,402)
Other comprehensive income (loss), net of tax	6,907	(31,743)	33,309	(27,065)
Comprehensive income	$ 127,251	$ 48,834	$ 353,775	$ 200,684