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GOODWILL AND PURCHASED INTANGIBLE ASSETS - Schedule of Goodwill (Details) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 24, 2020 USD ($) | Mar. 31, 2020 USD ($) | Jun. 30, 2020 USD ($) reporting_unit segment | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($)
Goodwill |  |  |  |  |
Number of reportable segments | segment |  |  | 4 |  |
Number of reporting units | reporting_unit |  |  | 6 |  |
Goodwill |  |  |  |  |
Goodwill, beginning balance |  |  | $ 2,211,858,000 | $ 354,698,000 |
Acquired goodwill | $ 2,200,000 |  | 56,180,000 | 1,818,951,000 |
Goodwill adjustments |  |  | 34,134,000 | 38,216,000 |
Reallocation due to change in segments |  |  |  | 0 |
Foreign currency adjustment |  |  | (121,000) | (7,000) |
Goodwill impairment |  |  | (256,649,000) | 0 | $ 0
Goodwill, ending balance |  |  | 2,045,402,000 | 2,211,858,000 | 354,698,000
Wafer Inspection |  |  |  |  |
Goodwill |  |  |  |  |
Goodwill, beginning balance |  |  | 0 | 281,005,000 |
Acquired goodwill |  |  | 0 | 0 |
Goodwill adjustments |  |  | 0 | 0 |
Reallocation due to change in segments |  |  |  | (281,005,000) |
Foreign currency adjustment |  |  |  | 0 |
Goodwill impairment |  |  | 0 |  |
Goodwill, ending balance |  |  | 0 | 0 | 281,005,000
Patterning |  |  |  |  |
Goodwill |  |  |  |  |
Goodwill, beginning balance |  |  | 0 | 53,255,000 |
Acquired goodwill |  |  | 0 | 26,362,000 |
Goodwill adjustments |  |  | 0 | 0 |
Reallocation due to change in segments |  |  |  | (79,617,000) |
Foreign currency adjustment |  |  | 0 | 0 |
Goodwill impairment |  |  | 0 |  |
Goodwill, ending balance |  |  | 0 | 0 | 53,255,000
GSS |  |  |  |  |
Goodwill |  |  |  |  |
Goodwill, beginning balance |  |  | 25,908,000 | 8,039,000 |
Acquired goodwill |  |  | 0 | 17,869,000 |
Goodwill adjustments |  |  | 0 | 0 |
Reallocation due to change in segments |  |  |  | 0 |
Foreign currency adjustment |  |  | 0 | 0 |
Goodwill impairment |  |  | 0 |  |
Goodwill, ending balance |  |  | 25,908,000 | 25,908,000 | 8,039,000
SPC Others |  |  |  |  |
Goodwill |  |  |  |  |
Goodwill, beginning balance |  |  | 0 | 12,399,000 |
Acquired goodwill |  |  | 0 | 1,176,000 |
Goodwill adjustments |  |  | 0 | 0 |
Reallocation due to change in segments |  |  |  | (13,575,000) |
Foreign currency adjustment |  |  | 0 | 0 |
Goodwill impairment |  |  | 0 |  |
Goodwill, ending balance |  |  | 0 | 0 | 12,399,000
Wafer Inspection and Patterning |  |  |  |  |
Goodwill |  |  |  |  |
Goodwill, beginning balance |  |  | 360,615,000 | 0 |
Acquired goodwill |  |  | 56,180,000 | 0 |
Goodwill adjustments |  |  | 166,000 | 0 |
Reallocation due to change in segments |  |  |  | 360,622,000 |
Foreign currency adjustment |  |  | (121,000) | (7,000) |
Goodwill impairment |  |  | 0 |  |
Goodwill, ending balance |  |  | 416,840,000 | 360,615,000 | 0
Specialty Semiconductor Process |  |  |  |  |
Goodwill |  |  |  |  |
Goodwill, beginning balance |  |  | 821,842,000 | 0 |
Acquired goodwill |  |  | 0 | 796,442,000 |
Goodwill adjustments |  |  | 4,195,000 | 25,400,000 |
Reallocation due to change in segments |  |  |  | 0 |
Foreign currency adjustment |  |  | 0 | 0 |
Goodwill impairment |  | $ (144,200,000) | (144,179,000) |  |
Goodwill, ending balance |  |  | 681,858,000 | 821,842,000 | 0
PCB and Display |  |  |  |  |
Goodwill |  |  |  |  |
Goodwill, beginning balance |  |  | 989,918,000 | 0 |
Acquired goodwill |  |  | 0 | 977,102,000 |
Goodwill adjustments |  |  | 29,773,000 | 12,816,000 |
Reallocation due to change in segments |  |  |  | 0 |
Foreign currency adjustment |  |  | 0 | 0 |
Goodwill impairment |  | $ (112,500,000) | (112,470,000) |  |
Goodwill, ending balance |  |  | 907,221,000 | 989,918,000 | 0
Component Inspection |  |  |  |  |
Goodwill |  |  |  |  |
Goodwill, beginning balance |  |  | 13,575,000 | 0 |
Acquired goodwill |  |  | 0 | 0 |
Goodwill adjustments |  |  | 0 | 0 |
Reallocation due to change in segments |  |  |  | 13,575,000 |
Foreign currency adjustment |  |  | 0 | 0 |
Goodwill impairment |  |  | 0 |  |
Goodwill, ending balance |  |  | 13,575,000 | 13,575,000 | $ 0
Other Reporting Units |  |  |  |  |
Goodwill |  |  |  |  |
Goodwill, beginning balance |  |  | 0 |  |
Goodwill, ending balance |  |  | $ 0 | $ 0 |

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