RISK MANAGEMENT ACTIVITIES AND FAIR VALUE MEASUREMENTS - ADDITIONAL INFORMATION (Details) |
12 Months Ended |
|---|---|
Jun. 30, 2016 | |
| Currency Swap | |
| Derivative [Line Items] | |
| Derivative, Term of Contract | 5 years |
| Commodity Option | Future | |
| Derivative [Line Items] | |
| Derivative, Term of Contract | 1 year |
| Commodity Option | Swap | |
| Derivative [Line Items] | |
| Derivative, Term of Contract | 5 years |