The recoverable amount calculation was based on an estimate of future inflation rate.

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Gold prices applied in the recoverable amount calculation using an estimate of future production levels.

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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.

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The amount of impairment loss recognised in profit or loss. [Refer: Impairment loss; Profit (loss)]

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The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]]

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IMPAIRMENT LOSS (Details) $ in Thousands	12 Months Ended
IMPAIRMENT LOSS (Details) $ in Thousands	Dec. 31, 2018 USD ($) $ / $ $ / oz	Dec. 31, 2017 $ / $ $ / oz	Mar. 28, 2018
Impairment Reversals
Impairment loss	$ 389,693
El Barqueno
Impairment Reversals
Impairment loss	$ 101,600
Percentage of voting equity interests acquired	100.00%
CMC Exploration Assets
Impairment Reversals
Percentage of voting equity interests acquired			100.00%
Yamana \| CMC Exploration Assets
Impairment Reversals
Percentage of voting equity interests acquired			50.00%
Canadian Malartic joint operation
Impairment Reversals
Nominal discount rate (as a percent)	5.50%
Estimate of future gold price \| $ / oz	1,300	1,300
Inflation rate (as a percent)	2.00%
Impairment loss	$ 250,000
Canadian Malartic joint operation \| Yamana \| CMC Exploration Assets
Impairment Reversals
Percentage of voting equity interests acquired			50.00%
Canadian Malartic joint operation \| Minimum
Impairment Reversals
Nominal discount rate (as a percent)		5.75%
Foreign exchange rates \| $ / $	0.76	0.78
Canadian Malartic joint operation \| Maximum
Impairment Reversals
Nominal discount rate (as a percent)		9.00%
Foreign exchange rates \| $ / $	0.80	0.80
La India mine
Impairment Reversals
Nominal discount rate (as a percent)	6.25%	6.25%
Estimate of future gold price \| $ / oz	1,300	1,300
Inflation rate (as a percent)	2.00%
Impairment loss	$ 39,000