INCOME TAXES - Summary of Income Tax Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns
Unrecognized tax benefits at the beginning of the year	$ 172,443	$ 146,426	$ 63,994
Increases for tax positions from acquisitions	0	0	60,753
Increases for tax positions taken in prior years	6,557	6,826	13,001
Decreases for tax positions taken in prior years	(19,360)	(518)	(1,304)
Increases for tax positions taken in current year	31,113	34,278	26,178
Decreases for settlements with taxing authorities	(28,651)	0	0
Decreases for lapsing of statutes of limitations	(12,460)	(14,569)	(16,196)
Unrecognized tax benefits at the end of the year	$ 149,642	$ 172,443	$ 146,426