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Share-based compensation - Disclosure of detailed information about options, valuation assumptions of Osisko Development Corp (Details)	12 Months Ended
	Dec. 31, 2021 Month $ / shares	Dec. 31, 2020 Month $ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Dividend per share	1.50%	1.50%
Expected volatility	40.00%	39.00%
Risk-free interest rate	0.70%	0.30%
Expected life | Month	46	46
Weighted average share price	$ 13.27	$ 13.51
Weighted average fair value of options granted	$ 3.66	$ 3.56
Osisko Development Corp [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Dividend per share	0.00%	0.00%
Expected volatility	66.00%	63.00%
Risk-free interest rate	0.90%	0.40%
Expected life | Month	45	48
Weighted average share price	$ 6.47	$ 7.62
Weighted average fair value of options granted	$ 3.16	$ 3.64

X

- Definition

The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2021-01-01
-Paragraph 47
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-URIDate 2021-03-24

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- Definition

The option life of share options granted.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2021-01-01
-Paragraph 47
-Subparagraph a
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- Definition

The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-Paragraph 47
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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The exercise price of share options granted.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2021-01-01
-Paragraph 47
-Subparagraph a
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- Definition

The percentage of an expected dividend used to calculate the fair value of share options granted.

+ References

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- Definition

The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]]

+ References

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