GOODWILL AND PURCHASED INTANGIBLE ASSETS - Schedule of Goodwill (Details)	3 Months Ended
	Sep. 30, 2020 USD ($)
Goodwill
Beginning balance	$ 2,045,402,000
Foreign currency adjustments	30,000
Ending balance	2,045,432,000
Wafer Inspection and Patterning
Goodwill
Beginning balance	416,840,000
Foreign currency adjustments	30,000
Ending balance	416,870,000
Global Service and Support (“GSS”)
Goodwill
Beginning balance	25,908,000
Foreign currency adjustments	0
Ending balance	25,908,000
Specialty Semiconductor Process
Goodwill
Beginning balance	681,858,000
Foreign currency adjustments	0
Ending balance	681,858,000
PCB and Display
Goodwill
Beginning balance	907,221,000
Foreign currency adjustments	0
Ending balance	907,221,000
Component Inspection
Goodwill
Beginning balance	13,575,000
Foreign currency adjustments	0
Ending balance	13,575,000
Others
Goodwill
Beginning balance	0
Ending balance	$ 0