COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
Jan. 17, 2019 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Long-term Purchase Commitment [Line Items] | ||||
| Other obligations | $ 10.1 | |||
| Payment for deposit on long-term asset | 42.0 | $ 0.0 | $ 0.0 | |
| Synopsys Inc | ||||
| Long-term Purchase Commitment [Line Items] | ||||
| Litigation settlement, amount awarded to other party | $ 18.0 | |||
| Purchase commitment | ||||
| Long-term Purchase Commitment [Line Items] | ||||
| Outstanding purchase commitment balance | 22.5 | |||
| Component purchase commitments | ||||
| Long-term Purchase Commitment [Line Items] | ||||
| Purchase obligation | 4.9 | |||
| Minimum | Components | ||||
| Long-term Purchase Commitment [Line Items] | ||||
| Purchase obligation | 151.9 | |||
| Maximum | Components | ||||
| Long-term Purchase Commitment [Line Items] | ||||
| Purchase obligation | $ 161.4 | |||