INTANGIBLE ASSETS - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	[1]	Jun. 30, 2017
Finite Lived Intangible Assets [Line Items]
Intangible assets	$ 449,974		$ 669,248
Less accumulated amortization	(208,219)		(433,877)
Total intangible assets, net	241,755		235,371
Customer contracts and related customer relationships
Finite Lived Intangible Assets [Line Items]
Intangible assets	435,933		635,895
Less accumulated amortization	(199,018)		(402,934)
Acquired technologies
Finite Lived Intangible Assets [Line Items]
Intangible assets	13,237		28,503
Less accumulated amortization	(8,761)		(26,542)
Covenants not to compete
Finite Lived Intangible Assets [Line Items]
Intangible assets			3,305
Less accumulated amortization			(3,288)
Other
Finite Lived Intangible Assets [Line Items]
Intangible assets	804		1,545
Less accumulated amortization	$ (440)		$ (1,113)

[1] During FY2018, the Company removed $264.1 million in fully amortized intangible assets.