Derivative liabilities (Details) |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Sep. 30, 2017 |
Jun. 30, 2017 |
Jun. 30, 2016 |
|
| Annual dividend yield | |||
| Expected life (years) | 8 months 26 days | ||
| Risk-free interest rate | 1.68% | ||
| Expected volatility | 161.00% | ||
| Derivative [Member] | |||
| Annual dividend yield | |||
| Expected life (years) | 3 years 7 months 10 days | 3 years 10 months 9 days | 4 days |
| Risk-free interest rate | 1.89% | 1.89% | 0.21% |
| Expected volatility | 424.00% | 440.00% | 449.00% |
| Derivative [Member] | Minimum [Member] | |||
| Expected life (years) | 4 days | ||
| Risk-free interest rate | 0.83% | ||
| Expected volatility | 91.00% | ||
| Derivative [Member] | Maximum [Member] | |||
| Expected life (years) | 1 year | ||
| Risk-free interest rate | 1.31% | ||
| Expected volatility | 215.00% | ||