Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of period - Net of Tax	$ 1,294,912	$ 1,429,647	$ 1,391,530	$ 1,519,286
Balance at the end of period - Net of Tax	1,294,559	1,404,587	1,294,559	1,404,587
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of period - Net of Tax	(159,118)	(143,518)	(137,290)	(142,168)
ASU 2016-01 cumulative effect adjustment - Net of Tax				(381)
Balance at the end of period - Net of Tax	(276,379)	(148,706)	(276,379)	(148,706)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of period - Net of Tax	(159,259)	(143,529)	(137,389)	(142,574)
Other comprehensive income (loss) - Gross	(117,669)	(5,238)	(139,539)	(6,193)
Balance at the end of period - Net of Tax	(276,928)	(148,767)	(276,928)	(148,767)
Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of period - Gross	186	15	131	537
Balance at the beginning of period - Tax	(45)	(4)	(32)	(131)
Balance at the beginning of period - Net of Tax	141	11	99	406
ASU 2016-01 cumulative effect adjustment - Gross				(381)
Other comprehensive income (loss) - Gross	(58)	66	(3)	48
Other comprehensive income (loss) - Tax	(14)	16	(1)	12
Balance at the end of period - Net of Tax	97	$ 61	97	$ 61
Interest Rate Swap
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) - Gross	598		598
Other comprehensive income (loss) - Tax	(146)		(146)
Balance at the end of period - Net of Tax	$ 452		$ 452