XML 228 R139.htm IDEA: XBRL DOCUMENT
v3.22.0.1

FINANCIAL INSTRUMENTS - Narrative (Details) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) $ / bbl $ / $ $ / shares $ / oz | Dec. 31, 2021 CAD ($) $ / bbl $ / $ | Dec. 31, 2020 USD ($) | Dec. 31, 2021 CAD ($) $ / shares $ / oz | Sep. 23, 2020 USD ($) | Dec. 31, 2019 USD ($)
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Cash and cash equivalents and short-term investments | $ 552,500,000 |  | $ 947,500,000 |  |  |
Accounts payable and accrued liabilities | 304,400,000 |  | 244,700,000 |  |  |
Lease obligations | 65,600,000 |  | 66,800,000 |  |  | $ 58,800,000
Borrowings | 464,400,000 |  | 466,600,000 |  |  |
Carrying amount of long-term debt | $ 450,000,000.0 |  | 450,000,000.0 |  |  |
Percentage of reasonably possible decrease | 10.00% |  |  | 10.00% |  |
Percentage of reasonably possible | 10.00% |  |  | 10.00% |  |
Gold floor price, per ounce (in usd per ounce) | $ / oz | 1,700 |  |  | 1,700 |  |
Gold cap price, per ounce (in usd per ounce) | $ / oz | 2,100 |  |  | 2,100 |  |
Gold option increase price, per ounce (in usd per ounce) | $ / oz | 2,100 |  |  | 2,100 |  |
Closing foreign exchange rate (C$ per share) | $ / shares | 0.7901 |  |  | 0.7901 |  |
Increase in fair value measurement due to reasonably possible increase in unobservable input, recognised in OCI | $ 3,900,000 |  |  |  |  |
Decrease in fair value measurement due to reasonably possible decrease in unobservable input, recognised in OCI | 3,900,000 |  |  |  |  |
Realized hedge losses recognized in profit or loss | 5,500,000 |  | 0 |  |  |
Hedge ineffectiveness | $ 0 |  | 0 |  |  |
Scenario One |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Estimated exchange rate used for all years (usd$ per C$) | $ / $ | 1.30675 | 1.30675 |  |  |  |
Currency exchange, cash delivered | $ 7,700,000 |  |  |  |  |
Currency exchange, cash received |  | $ 10,000,000 |  |  |  |
Scenario Two |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Estimated exchange rate used for all years (usd$ per C$) | $ / bbl | 1.30675 | 1.30675 |  |  |  |
Currency exchange, cash delivered | $ 15,300,000 |  |  |  |  |
Currency exchange, cash received |  | $ 20,000,000 |  |  |  |
Maximum |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Estimated exchange rate used for all years (usd$ per C$) | $ / $ | 1.30675 | 1.30675 |  |  |  |
Credit Facility Due 2024 |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Borrowing Facilities, Maximum Borrowing Capacity | $ 498,300,000 |  |  |  |  |
Equipment loans |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Borrowings | 18,700,000 |  | 28,000,000.0 |  |  |
Carrying amount of long-term debt | 18,900,000 |  | 28,200,000 |  |  |
5.75% senior notes |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Borrowings | 445,700,000 |  | 438,600,000 |  |  |
Carrying amount of long-term debt | $ 450,000,000.0 |  | 450,000,000.0 |  | $ 454,200,000 |
Extendable Forward contract |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Carrying amount of long-term debt |  |  |  | $ 120,000,000 |  |
Estimated exchange rate used for all years (usd$ per C$) |  | 1.32 |  |  |  |
Borrowings, monthly amount |  |  |  | 10,000,000 |  |
Borrowings, required borrowings |  |  |  | $ 10,000,000 |  |
Cost | 7.0% Senior Notes |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Carrying amount of long-term debt |  |  | 438,600,000 |  |  |
Cost | Equipment loans |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Carrying amount of long-term debt |  |  | $ 28,000,000 |  |  |

X
- Definition Borrowing Facilities, Maximum Borrowing Capacity + References No definition available. + Details
Name: | iag_BorrowingFacilitiesMaximumBorrowingCapacity
Namespace Prefix: | iag_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Borrowings, Monthly Amount + References No definition available. + Details
Name: | iag_BorrowingsMonthlyAmount
Namespace Prefix: | iag_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Borrowings Net of Prepaid Transaction Cost + References No definition available. + Details
Name: | iag_BorrowingsNetofPrepaidTransactionCost
Namespace Prefix: | iag_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Borrowings, Required Borrowings + References No definition available. + Details
Name: | iag_BorrowingsRequiredBorrowings
Namespace Prefix: | iag_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Cash And Cash Equivalents Including Short-Term Investments + References No definition available. + Details
Name: | iag_CashAndCashEquivalentsIncludingShortTermInvestments
Namespace Prefix: | iag_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Currency Exchange, Cash Delivered + References No definition available. + Details
Name: | iag_CurrencyExchangeCashDelivered
Namespace Prefix: | iag_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Currency Exchange, Cash Received + References No definition available. + Details
Name: | iag_CurrencyExchangeCashReceived
Namespace Prefix: | iag_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Gold Cap Price, Per Ounce + References No definition available. + Details
Name: | iag_GoldCapPricePerOunce
Namespace Prefix: | iag_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Gold Floor Price, Per Ounce + References No definition available. + Details
Name: | iag_GoldFloorPricePerOunce
Namespace Prefix: | iag_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Gold Option Increase Price, Per Ounce + References No definition available. + Details
Name: | iag_GoldOptionIncreasePricePerOunce
Namespace Prefix: | iag_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Realized Hedge Losses Recognized in Profit or Loss + References No definition available. + Details
Name: | iag_RealizedHedgeLossesRecognizedInProfitOrLoss
Namespace Prefix: | iag_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The average exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_AverageForeignExchangeRate
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_Borrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_ClosingForeignExchangeRate
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | ifrs-full_DisclosureOfFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The gain (loss) on hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 24C -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_24C_a_i&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_GainLossOnHedgeIneffectiveness
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of increase (decrease) in the fair value measurement of assets, recognised in other comprehensive income after tax, due to a reasonably possible decrease in an unobservable input. [Refer: Tax income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 13 -IssueDate 2021-01-01 -Paragraph 93 -Subparagraph h -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2021-en-r&anchor=para_93_h_ii&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputRecognisedInOtherComprehensiveIncomeAfterTaxAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of increase (decrease) in the fair value measurement of assets, recognised in other comprehensive income after tax, due to a reasonably possible increase in an unobservable input. [Refer: Tax income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 13 -IssueDate 2021-01-01 -Paragraph 93 -Subparagraph h -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2021-en-r&anchor=para_93_h_ii&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputRecognisedInOtherComprehensiveIncomeAfterTaxAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_LeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The percentage of a reasonably possible decrease in an unobservable input used in fair value measurement of assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 13 -IssueDate 2021-01-01 -Paragraph 93 -Subparagraph h -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2021-en-r&anchor=para_93_h_ii&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_PercentageOfReasonablyPossibleDecreaseInUnobservableInputAssets
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of a reasonably possible increase in an unobservable input used in fair value measurement of assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 13 -IssueDate 2021-01-01 -Paragraph 93 -Subparagraph h -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2021-en-r&anchor=para_93_h_ii&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_PercentageOfReasonablyPossibleIncreaseInUnobservableInputAssets
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of current trade payables and current other payables. [Refer: Current trade payables; Other current payables] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph k -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_k&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_TradeAndOtherCurrentPayables
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | iag_MonthlyOptionFixingAxis=iag_ScenarioOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | iag_MonthlyOptionFixingAxis=iag_ScenarioTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=iag_CreditFacilityDue2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=iag_CaterpillarFinanceCorporationEquipmentLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=iag_A575PercentSeniorSecuredNotesDue2028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=iag_ExtendableForwardContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_GrossCarryingAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=iag_SevenPercentSeniorSecuredNotesDue2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |