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Share-Based Compensation - RSUs and DSUs that Remain Outstanding (Details)	12 Months Ended
	Jun. 30, 2020 shares $ / shares	Jun. 30, 2019 shares $ / shares	Jun. 30, 2018 shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted Average Issue Price (in CAD per share) | $ / shares	$ 37.82	$ 96.24
Outstanding (in shares)	376,296	169,195	179,167
Vested (in shares)	101,556
Exercise Price Range One
Disclosure of terms and conditions of share-based payment arrangement [line items]
Outstanding (in shares)	209,322
Vested (in shares)	23,516
Exercise Price Range Two
Disclosure of terms and conditions of share-based payment arrangement [line items]
Outstanding (in shares)	80,942
Vested (in shares)	51,015
Exercise Price Range Three
Disclosure of terms and conditions of share-based payment arrangement [line items]
Outstanding (in shares)	86,032
Vested (in shares)	27,025
Bottom of range | Exercise Price Range One
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted Average Issue Price (in CAD per share) | $ / shares	$ 10.45
Bottom of range | Exercise Price Range Two
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted Average Issue Price (in CAD per share) | $ / shares	25.00
Bottom of range | Exercise Price Range Three
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted Average Issue Price (in CAD per share) | $ / shares	88.68
Top of range | Exercise Price Range One
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted Average Issue Price (in CAD per share) | $ / shares	24.99
Top of range | Exercise Price Range Two
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted Average Issue Price (in CAD per share) | $ / shares	88.67
Top of range | Exercise Price Range Three
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted Average Issue Price (in CAD per share) | $ / shares	$ 123.84

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

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- Definition

The number of other equity instruments (ie other than share options) exercisable in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Number 2
-IssueDate 2019-01-01
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-Number 2
-IssueDate 2019-01-01
-Paragraph 45
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- Definition

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+ References

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