Statements of Consolidated Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income per the statements of consolidated income	$ 385,762	$ 346,739	$ 257,414
Other comprehensive (loss) income, before tax:
Foreign currency translation adjustments	(12,544)	7,723	(9,862)
Post-employment benefits:
Actuarial (loss) gain on re-measurement	(134)	405	2,839
Termination of pension plan	0	1,031	0
Reclassification of net actuarial (gains) losses and prior service cost into other (income) expense, net and included in net periodic pension costs	(117)	36	300
Unrealized gain on cash flow hedge	5,958	18,174	26,204
Reclassification of interest from cash flow hedge into interest expense	(18,683)	(7,285)	11,361
Total other comprehensive (loss) income, before tax	(25,520)	20,084	30,842
Income tax (benefit) expense related to items of other comprehensive income	(3,250)	3,085	10,045
Other comprehensive (loss) income, net of tax	(22,270)	16,999	20,797
Comprehensive income	$ 363,492	$ 363,738	$ 278,211