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IMPAIRMENT CHARGES, NET OF REVERSAL (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment charge | $ 205.1 | $ (45.8)
Plant and equipment | Rosebel Gold mines |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment charge |  | 0.0
Plant and equipment | IAMGOLD Essakane S.A. ("Essakane S.A.") |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment charge | $ 0.0 | $ (45.8)

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- Definition 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. + Details
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- Definition The amount of impairment loss recognised in profit or loss. [Refer: Impairment loss; Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 126 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_126_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 129 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_129_a&doctype=Standard -URIDate 2021-03-24 + Details
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