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BASIS OF PREPARATION (Details) |  | 12 Months Ended
--- | --- | ---
Apr. 22, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Republic of Suriname |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Proportion of ownership interest in mining concession |  | 5.00% |
Rosebel UJV | Staatsolie |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Ownership interest in unincorporated joint venture | 30.00% |  |
IAMGOLD Essakane S.A. ("Essakane S.A.") |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Ownership interest in subsidiary/divisions |  | 90.00% | 90.00%
Rosebel Gold Mines N.V. |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Ownership interest in subsidiary/divisions |  | 95.00% | 95.00%
Proportion of ownership interest in mining concession |  | 95.00% |
Rosebel Gold Mines N.V. | Rosebel UJV |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Ownership interest in unincorporated joint venture | 70.00% |  |
Doyon division including the Westwood mine2 |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Ownership interest in subsidiary/divisions |  | 100.00% | 100.00%
Côté Gold division |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Ownership interest in subsidiary/divisions |  | 70.00% | 70.00%
Proportion of ownership interest in mineral tenure |  | 64.75% |
Côté Gold division | Sumitomo Metal Mining Co Ltd |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Ownership interest in unincorporated joint venture |  | 70.00% |
Boto |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Ownership interest in subsidiary/divisions |  | 90.00% | 90.00%
Euro Ressources S.A. |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Ownership interest in subsidiary/divisions |  | 90.00% | 90.00%
Merrex Gold Inc. |  |  |
Disclosure of unconsolidated joint ventures/divisions [line items] |  |  |
Ownership interest in subsidiary/divisions |  | 100.00% | 100.00%

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