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Strategic Investments - Australis Capital Inc. (Details) $ / shares in Units, $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Sep. 19, 2018 day $ / shares shares | Jun. 30, 2020 CAD ($) year $ / shares | Jun. 30, 2019 CAD ($) year $ / shares | Jun. 30, 2020 $ / shares
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |  |  |
Share price (in CAD per share) |  |  |  | $ 12.42
Restricted Back-In Right Warrants | ACI | Derivatives and convertible debentures at FVTPL |  |  |  |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |  |  |
Number of warrants held by entity (in shares) | shares | 22,628,751 |  |  |
Exercise price of warrants (in CAD per share) | $ 0.20 |  |  |
Warrants received, percentage of common shares issued and outstanding | 20.00% |  |  |
Financial assets, at fair value, volume weighted average trading price, period | day | 5 |  |  |
Financial assets, at fair value | $ |  | $ 3.2 | $ 10.1 |
Share price (in CAD per share) |  | $ 0.22 | $ 0.92 |
Gains (losses) recognised in profit or loss attributable to change in unrealised gains or losses for assets held at end of period, fair value measurement | $ |  | $ (6.9) | $ 9.6 |
Risk-free interest rate | Restricted Back-In Right Warrants | ACI | Derivatives and convertible debentures at FVTPL |  |  |  |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |  |  |
Significant unobservable input, assets |  | 0.0093 | 0.0181 |
Dividend yield | Restricted Back-In Right Warrants | ACI | Derivatives and convertible debentures at FVTPL |  |  |  |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |  |  |
Significant unobservable input, assets |  | 0 | 0 |
Historical volatility for shares | Restricted Back-In Right Warrants | ACI | Derivatives and convertible debentures at FVTPL |  |  |  |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |  |  |
Significant unobservable input, assets |  | 1.1601 | 0.4897 |
Expected life | Restricted Back-In Right Warrants | ACI | Derivatives and convertible debentures at FVTPL |  |  |  |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |  |  |
Significant unobservable input, assets | year |  | 8.23 | 9.23 |

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