FINANCIAL INSTRUMENTS - RISK MANAGEMENT - Estimation of fair value (Details) - Fair value - Private warrants - Simulation method $ in Millions |
12 Months Ended |
|---|---|
|
Jun. 30, 2020
USD ($)
| |
| Fair value | |
| Assumed increase in volatility (as a percent) | 5.00% |
| Assumed decrease in volatility (as a percent) | 5.00% |
| Increase in liability if volatility were 33.5% | $ 1.2 |
| Decrease in liability if volatility were 23.5% | $ 0.9 |
| Minimum | |
| Fair value | |
| Assumed volatility (as a percent) | 23.5 |
| Maximum | |
| Fair value | |
| Assumed volatility (as a percent) | 33.5 |