| Line |
Label |
Object Class |
Period Type |
Balance |
Report ElementName |
| 1 |
101 - Document - Document and Entity Information |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DocumentAndEntityInformation |
| 2 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 3 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 4 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 5 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 6 |
Document Type |
Concept (Submission Type) |
For Period |
|
dei:DocumentType |
| 7 |
Amendment Flag |
Concept (Yes/No) |
For Period |
|
dei:AmendmentFlag |
| 8 |
Amendment Description |
Concept (Text/String) |
For Period |
|
dei:AmendmentDescription |
| 9 |
Document Period End Date |
Concept (Date) |
For Period |
|
dei:DocumentPeriodEndDate |
| 10 |
Trading Symbol |
Concept (Text/String) |
For Period |
|
dei:TradingSymbol |
| 11 |
Entity Registrant Name |
Concept (Text/String) |
For Period |
|
dei:EntityRegistrantName |
| 12 |
Entity Central Index Key |
Concept (CIK Number) |
For Period |
|
dei:EntityCentralIndexKey |
| 13 |
Current Fiscal Year End Date |
Concept (Month/Day) |
For Period |
|
dei:CurrentFiscalYearEndDate |
| 14 |
Entity Filer Category |
Concept (Filer Category) |
For Period |
|
dei:EntityFilerCategory |
| 15 |
Entity Common Stock, Shares Outstanding |
Concept (Shares) |
As Of |
|
dei:EntityCommonStockSharesOutstanding |
| 16 |
Entity Current Reporting Status |
Concept (Yes/No) |
For Period |
|
dei:EntityCurrentReportingStatus |
| 17 |
Entity Voluntary Filers |
Concept (Yes/No) |
For Period |
|
dei:EntityVoluntaryFilers |
| 18 |
Entity Well Known Seasoned Issuer |
Concept (Yes/No) |
For Period |
|
dei:EntityWellKnownSeasonedIssuer |
| 19 |
Entity Public Float |
Concept (Monetary) |
As Of |
Credit |
dei:EntityPublicFloat |
| 20 |
Document Fiscal Year Focus |
Concept (Year) |
For Period |
|
dei:DocumentFiscalYearFocus |
| 21 |
Document Fiscal Period Focus |
Concept (Fiscal Period) |
For Period |
|
dei:DocumentFiscalPeriodFocus |
| 22 |
102 - Statement - Consolidated Statements of Financial Position |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/BalanceSheet |
| 23 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 24 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 25 |
ASSETS |
Abstract |
|
|
ifrs-full:AssetsAbstract |
| 26 |
Current assets |
Abstract |
|
|
ifrs-full:CurrentAssetsAbstract |
| 27 |
Cash and cash equivalents |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:CashAndCashEquivalents |
| 28 |
Receivables |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:TradeAndOtherCurrentReceivables |
| 29 |
Prepaid expenses |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:CurrentPrepaidExpenses |
| 30 |
Total current assets |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:CurrentAssets |
| 31 |
Non-current assets |
Abstract |
|
|
ifrs-full:NoncurrentAssetsAbstract |
| 32 |
Reclamation deposits |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:LongtermDeposits |
| 33 |
Equipment |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:PropertyPlantAndEquipment |
| 34 |
Exploration and evaluation assets |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources |
| 35 |
Total Noncurrent Assets |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:NoncurrentAssets |
| 36 |
TOTAL ASSETS |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:Assets |
| 37 |
LIABILITIES |
Abstract |
|
|
ifrs-full:LiabilitiesAbstract |
| 38 |
Current liabilities |
Abstract |
|
|
ifrs-full:CurrentLiabilitiesAbstract |
| 39 |
Trade payables and accrued liabilities |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:TradeAndOtherCurrentPayables |
| 40 |
TOTAL LIABILITIES |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:Liabilities |
| 41 |
EQUITY |
Abstract |
|
|
ifrs-full:EquityAbstract |
| 42 |
Share capital |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:IssuedCapital |
| 43 |
Share-based payment reserve |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:ReserveOfSharebasedPayments |
| 44 |
Subscriptions received |
Concept (Monetary) |
As Of |
Credit |
giga:ShareSubscriptionsReceived |
| 45 |
Deficit |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:RetainedEarnings |
| 46 |
TOTAL EQUITY |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:Equity |
| 47 |
TOTAL LIABILITIES AND EQUITY |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:EquityAndLiabilities |
| 48 |
103 - Statement - Consolidated Statements of Comprehensive Loss |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/IncomeStatement |
| 49 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 50 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 51 |
Operating expenses |
Abstract |
|
|
ifrs-full:ExpenseByNatureAbstract |
| 52 |
Amortization |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:AmortisationExpense |
| 53 |
Consulting |
Concept (Monetary) |
For Period |
Debit |
giga:ConsultingExpense |
| 54 |
Investor relations |
Concept (Monetary) |
For Period |
Debit |
giga:InvestorRelations |
| 55 |
Legal and audit |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:ProfessionalFeesExpense |
| 56 |
Management fees |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:DirectorsRemunerationExpense |
| 57 |
Office and general |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:SellingGeneralAndAdministrativeExpense |
| 58 |
Stock-based compensation |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees |
| 59 |
Operating expenses, total |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:OperatingExpense |
| 60 |
Other items |
Abstract |
|
|
giga:OtherIncomeLossAbstract |
| 61 |
Exploration property impairments |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:ImpairmentLoss |
| 62 |
Interest income |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:InvestmentIncome |
| 63 |
Other operating income (expense) |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:OtherOperatingIncomeExpense |
| 64 |
Loss and comprehensive loss for the year |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:ProfitLoss |
| 65 |
Loss per share basic and diluted |
Concept (Share) |
For Period |
|
ifrs-full:BasicAndDilutedEarningsLossPerShare |
| 66 |
Weighted average number of shares outstanding basic and diluted |
Concept (Shares) |
For Period |
|
ifrs-full:AdjustedWeightedAverageShares |
| 67 |
104 - Statement - Consolidated Statement of Changes in Equity |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/StockholdersEquity |
| 68 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 69 |
Components of equity [Axis] |
Axis |
|
|
ifrs-full:ComponentsOfEquityAxis |
| 70 |
Equity components [Domain] |
Member |
|
|
ifrs-full:EquityMember |
| 71 |
Share capital [Member] |
Member |
|
|
ifrs-full:IssuedCapitalMember |
| 72 |
Share-based payment reserve [Member] |
Member |
|
|
ifrs-full:ReserveOfSharebasedPaymentsMember |
| 73 |
Subscriptions received [Member] |
Member |
|
|
giga:SubscriptionsReceivedMember |
| 74 |
Deficit [Member] |
Member |
|
|
ifrs-full:RetainedEarningsMember |
| 75 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 76 |
Beginning Balance |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:Equity |
| 77 |
Beginning Balance (Shares) |
Concept (Shares) |
As Of |
|
ifrs-full:NumberOfSharesOutstanding |
| 78 |
Private placement |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:IssueOfEquity |
| 79 |
Private placement (Shares) |
Concept (Shares) |
For Period |
|
ifrs-full:IncreaseDecreaseInNumberOfSharesOutstanding |
| 80 |
Share issuance costs |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:ShareIssueRelatedCost |
| 81 |
Cash finders fees |
Concept (Monetary) |
For Period |
Credit |
giga:IncreaseDecreaseThroughCashFindersFees |
| 82 |
Cash brokers warrants |
Concept (Monetary) |
For Period |
Credit |
giga:IncreaseDecreaseThroughCashBrokersWarrants |
| 83 |
Other fees |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity |
| 84 |
Exercise of warrants |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity |
| 85 |
Exercise of warrants (Shares) |
Concept (Shares) |
For Period |
|
giga:IncreaseDecreaseInNumberOfSharesOutstandingThroughExerciseOfWarrantsEquity |
| 86 |
Exercise of options |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:IncreaseDecreaseThroughExerciseOfOptions |
| 87 |
Exercise of options (Shares) |
Concept (Shares) |
For Period |
|
giga:IncreaseDecreaseInNumberOfSharesOutstandingThroughExerciseOfOptions |
| 88 |
Stock-based compensation |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions |
| 89 |
Comprehensive loss for the year |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:ComprehensiveIncome |
| 90 |
Ending Balance |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:Equity |
| 91 |
Ending Balance (Shares) |
Concept (Shares) |
As Of |
|
ifrs-full:NumberOfSharesOutstanding |
| 92 |
105 - Statement - Consolidated Statements of Cash Flows |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/CashFlows |
| 93 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 94 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 95 |
Operating activities |
Abstract |
|
|
ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract |
| 96 |
Loss for the year |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:ProfitLoss |
| 97 |
Adjustments for: |
Abstract |
|
|
ifrs-full:AdjustmentsForReconcileProfitLossAbstract |
| 98 |
Amortization |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense |
| 99 |
Stock-based compensation |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:AdjustmentsForSharebasedPayments |
| 100 |
Exploration property impairment and expenditures |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss |
| 101 |
Income tax recovery |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:AdjustmentsForIncomeTaxExpense |
| 102 |
Changes in non-cash working capital items: |
Abstract |
|
|
giga:ChangesInNonCashWorkingCapitalItemsAbstract |
| 103 |
Receivables |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable |
| 104 |
Prepaid expense |
Concept (Monetary) |
For Period |
Debit |
giga:AdjustmentsForIncreaseDecreaseInPrepaidExpense |
| 105 |
Trade payables and accrued liabilities |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable |
| 106 |
Net cash flows used in operating activities |
Concept (Monetary) |
For Period |
|
ifrs-full:CashFlowsFromUsedInOperatingActivities |
| 107 |
Investing activities |
Abstract |
|
|
ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract |
| 108 |
Expenditures on exploration and evaluation assets |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:PaymentsForExplorationAndEvaluationExpenses |
| 109 |
Purchase of equipment |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities |
| 110 |
Reclamation deposits |
Concept (Monetary) |
For Period |
Debit |
giga:ProceedsFromReclamationDeposits |
| 111 |
BC Mining tax credit settlement |
Concept (Monetary) |
For Period |
Debit |
giga:ProceedsFromBCMiningTaxCreditSettlement |
| 112 |
Net cash flows used in investing activities |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:CashFlowsFromUsedInInvestingActivities |
| 113 |
Financing activities |
Abstract |
|
|
ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract |
| 114 |
Proceeds on issuance of common shares |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:ProceedsFromIssuingShares |
| 115 |
Share issue costs |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:PaymentsForShareIssueCosts |
| 116 |
Net cash flows from financing activities |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:CashFlowsFromUsedInFinancingActivities |
| 117 |
Increase in cash and cash equivalents |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:IncreaseDecreaseInCashAndCashEquivalents |
| 118 |
Cash and cash equivalents, beginning |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:CashAndCashEquivalents |
| 119 |
Cash and cash equivalents, ending |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:CashAndCashEquivalents |
| 120 |
Cash |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:Cash |
| 121 |
Cash equivalents |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:CashEquivalents |
| 122 |
106 - Disclosure - Nature and continuance of operations |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfNatureAndContinuanceOfOperationsExplanatoryTextBlock |
| 123 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 124 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 125 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 126 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 127 |
Nature and continuance of operations [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DisclosureOfNatureAndContinuanceOfOperationsExplanatoryTextBlock |
| 128 |
107 - Disclosure - Significant accounting policies and basis of preparation |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfSummaryOfSignificantAccountingPoliciesExplanatoryTextBlock |
| 129 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 130 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 131 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 132 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 133 |
Significant accounting policies and basis of preparation [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory |
| 134 |
108 - Disclosure - Accounting standards issued but not yet effective |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatoryTextBlock |
| 135 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 136 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 137 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 138 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 139 |
Accounting standards issued but not yet effective [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory |
| 140 |
109 - Disclosure - Receivables |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfTradeAndOtherReceivablesExplanatoryTextBlock |
| 141 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 142 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 143 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 144 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 145 |
Receivables [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory |
| 146 |
110 - Disclosure - Equipment |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfPropertyPlantAndEquipmentExplanatoryTextBlock |
| 147 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 148 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 149 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 150 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 151 |
Equipment [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory |
| 152 |
111 - Disclosure - Exploration and evaluation assets |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfExplorationAndEvaluationAssetsExplanatoryTextBlock |
| 153 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 154 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 155 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 156 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 157 |
Exploration and evaluation assets [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfExplorationAndEvaluationAssetsExplanatory |
| 158 |
112 - Disclosure - Trade payables and accrued liabilities |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfTradeAndOtherPayablesExplanatoryTextBlock |
| 159 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 160 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 161 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 162 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 163 |
Trade payables and accrued liabilities [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory |
| 164 |
113 - Disclosure - Sublease obligations |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfLeasesExplanatoryTextBlock |
| 165 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 166 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 167 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 168 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 169 |
Sublease obligations [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfLeasesExplanatory |
| 170 |
114 - Disclosure - Income taxes and mining tax credits |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfIncomeTaxExplanatoryTextBlock |
| 171 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 172 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 173 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 174 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 175 |
Income taxes and mining tax credits [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfIncomeTaxExplanatory |
| 176 |
115 - Disclosure - Share capital |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfIssuedCapitalExplanatoryTextBlock |
| 177 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 178 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 179 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 180 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 181 |
Share capital [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfIssuedCapitalExplanatory |
| 182 |
116 - Disclosure - Share-based payment reserve |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfSharebasedPaymentArrangementsExplanatoryTextBlock |
| 183 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 184 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 185 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 186 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 187 |
Share-based payment reserve [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory |
| 188 |
117 - Disclosure - Related party transactions |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfRelatedPartyExplanatoryTextBlock |
| 189 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 190 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 191 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 192 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 193 |
Related party transactions [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfRelatedPartyExplanatory |
| 194 |
118 - Disclosure - Financial instruments and financial risk management |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfFinancialRiskManagementExplanatoryTextBlock |
| 195 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 196 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 197 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 198 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 199 |
Financial instruments and financial risk management [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfFinancialRiskManagementExplanatory |
| 200 |
119 - Disclosure - Capital management |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatoryTextBlock |
| 201 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 202 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 203 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 204 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 205 |
Capital management [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory |
| 206 |
120 - Disclosure - Supplemental cash flow information |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfCashFlowStatementExplanatoryTextBlock |
| 207 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 208 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 209 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 210 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 211 |
Supplemental cash flow information [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfCashFlowStatementExplanatory |
| 212 |
121 - Disclosure - Segmented information |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfEntitysReportableSegmentsExplanatoryTextBlock |
| 213 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 214 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 215 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 216 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 217 |
Segmented information [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory |
| 218 |
122 - Disclosure - Subsequent events |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfEventsAfterReportingPeriodExplanatoryTextBlock |
| 219 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 220 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 221 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 222 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 223 |
Subsequent events [Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory |
| 224 |
123 - Disclosure - Summary of Significant Accounting Policies (Policies) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlockPolicies |
| 225 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 226 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 227 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 228 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 229 |
Statement of compliance with International Financial Reporting Standards [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DescriptionOfAccountingPolicyForStatementOfComplianceWithInternationalFinancialReportingStandardsExplanatoryPolicyTextBlock |
| 230 |
Basis of preparation [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DescriptionOfAccountingPolicyForBasisOfPreparationExplanatoryPolicyTextBlock |
| 231 |
Consolidation [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory |
| 232 |
Significant estimates and assumptions [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DescriptionOfAccountingPolicyForSignificantEstimatesAndAssumptionsExplanatoryPolicyTextBlock |
| 233 |
Significant judgments [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DescriptionOfAccountingPolicyForSignificantJudgmentsExplanatoryPolicyTextBlock |
| 234 |
Cash and cash equivalents [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents |
| 235 |
Exploration and evaluation expenditures [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DescriptionOfAccountingPolicyForExplorationAndEvaluationExpenditures |
| 236 |
Share-based payments [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory |
| 237 |
Loss per share [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory |
| 238 |
Financial instruments [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory |
| 239 |
Impairment of assets [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfFinancialAssetsExplanatory |
| 240 |
Income taxes [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory |
| 241 |
Restoration and environmental obligations [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DescriptionOfAccountingPolicyForDecommissioningRestorationAndRehabilitationProvisionsExplanatory |
| 242 |
Equipment [Policy Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory |
| 243 |
124 - Disclosure - Significant accounting policies and basis of preparation (Tables) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfSummaryOfSignificantAccountingPoliciesExplanatoryTextBlockTables |
| 244 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 245 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 246 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 247 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 248 |
Disclosure of detailed information about estimated useful life or depreciation rate [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DisclosureOfDetailedInformationAboutEstimatedUsefulLifeOrDepreciationRateExplanatory |
| 249 |
125 - Disclosure - Receivables (Tables) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfTradeAndOtherReceivablesExplanatoryTextBlockTables |
| 250 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 251 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 252 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 253 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 254 |
Disclosure of detailed information about trade and other receivables [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DisclosureOfDetailedInformationAboutTradeAndOtherReceivablesExplanatory |
| 255 |
126 - Disclosure - Equipment (Tables) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfPropertyPlantAndEquipmentExplanatoryTextBlockTables |
| 256 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 257 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 258 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 259 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 260 |
Disclosure of detailed information about property, plant and equipment [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory |
| 261 |
127 - Disclosure - Exploration and evaluation assets (Tables) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfExplorationAndEvaluationAssetsExplanatoryTextBlockTables |
| 262 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 263 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 264 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 265 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 266 |
Disclosure of detailed information about deferred exploration costs [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DisclosureOfDetailedInformationAboutDeferredExplorationCostsExplanatory |
| 267 |
128 - Disclosure - Trade payables and accrued liabilities (Tables) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfTradeAndOtherPayablesExplanatoryTextBlockTables |
| 268 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 269 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 270 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 271 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 272 |
Disclosure of detailed information about trade and other payables [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DisclosureOfDetailedInformationAboutTradeAndOtherPayablesExplanatory |
| 273 |
129 - Disclosure - Sublease obligations (Tables) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfLeasesExplanatoryTextBlockTables |
| 274 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 275 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 276 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 277 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 278 |
Disclosure of lease prepayments [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfLeasePrepaymentsExplanatory |
| 279 |
130 - Disclosure - Income taxes and mining tax credits (Tables) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfIncomeTaxExplanatoryTextBlockTables |
| 280 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 281 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 282 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 283 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 284 |
Disclosure of detailed information about effective income tax expense recovery [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DisclosureOfDetailedInformationAboutEffectiveIncomeTaxExpenseRecoveryExplanatory |
| 285 |
Disclosure of deferred taxes [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfDeferredTaxesExplanatory |
| 286 |
Disclosure of detailed information about tax pools available [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DisclosureOfDetailedInformationAboutTaxPoolsAvailableExplanatory |
| 287 |
131 - Disclosure - Share capital (Tables) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfIssuedCapitalExplanatoryTextBlockTables |
| 288 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 289 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 290 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 291 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 292 |
Disclosure of number and weighted average exercise prices of share options [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory |
| 293 |
Disclosure of number and weighted average remaining contractual life of outstanding share options [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsExplanatory |
| 294 |
Disclosure of detailed information about options, valuation assumptions [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DisclosureOfDetailedInformationAboutOptionsValuationAssumptionsExplanatory |
| 295 |
Disclosure of detailed information about warrants, activity [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DisclosureOfDetailedInformationAboutWarrantsActivityExplanatory |
| 296 |
Disclosure of detailed information about warrants outstanding [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
giga:DisclosureOfDetailedInformationAboutWarrantsOutstandingExplanatory |
| 297 |
132 - Disclosure - Related party transactions (Tables) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfRelatedPartyExplanatoryTextBlockTables |
| 298 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 299 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 300 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 301 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 302 |
Disclosure of information about key management personnel [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory |
| 303 |
133 - Disclosure - Financial instruments and financial risk management (Tables) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfFinancialRiskManagementExplanatoryTextBlockTables |
| 304 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 305 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 306 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 307 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 308 |
Disclosure of maturity analysis for derivative financial liabilities [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:MaturityAnalysisForDerivativeFinancialLiabilities |
| 309 |
Disclosure of financial assets [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfFinancialAssetsExplanatory |
| 310 |
Disclosure of financial liabilities [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory |
| 311 |
Disclosure of fair value measurement of assets [Table Text Block] |
Concept (Text Block (HTML)) |
For Period |
|
ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory |
| 312 |
134 - Disclosure - Nature and continuance of operations (Narrative) (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfNatureAndContinuanceOfOperationsExplanatoryTextBlockDetails |
| 313 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 314 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 315 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 316 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 317 |
Working capital |
Concept (Monetary) |
As Of |
Debit |
giga:WorkingCapital |
| 318 |
135 - Disclosure - Exploration and evaluation assets (Narrative) (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfExplorationAndEvaluationAssetsExplanatoryDetails |
| 319 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 320 |
Mineral claims [Axis] |
Axis |
|
|
giga:MineralClaimsAxis |
| 321 |
Mineral claims [Domain] |
Member |
|
|
giga:MineralClaimsDomain |
| 322 |
Turnagain mineral claims [Member] |
Member |
|
|
giga:TurnagainMineralClaimsMember |
| 323 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 324 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 325 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 326 |
Mineral claim, ownership percentage |
Concept (Percent) |
As Of |
|
giga:MineralClaimOwnershipPercentage |
| 327 |
Net smelter return royalty |
Concept (Percent) |
As Of |
|
giga:NetSmelterReturnRoyalty |
| 328 |
Price per percentage of net smelter return royalty |
Concept (Monetary) |
As Of |
Credit |
giga:PricePerPercentageOfNetSmelterReturnRoyalty |
| 329 |
Expenditures on exploration and evaluation assets |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:PaymentsForExplorationAndEvaluationExpenses |
| 330 |
Exploration property impairments |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:ImpairmentLoss |
| 331 |
Exploration and evaluation assets |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources |
| 332 |
Exploration and evaluation expenditures |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources |
| 333 |
136 - Disclosure - Share capital (Narrative) (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfIssuedCapitalExplanatoryDetails |
| 334 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 335 |
Minimum Maximum [Axis] |
Axis |
|
|
giga:MinimumMaximumAxis |
| 336 |
Minimum Maximum [Domain] |
Member |
|
|
giga:MinimumMaximumDomain |
| 337 |
Bottom of range [Member] |
Member |
|
|
ifrs-full:BottomOfRangeMember |
| 338 |
Top of range [Member] |
Member |
|
|
ifrs-full:TopOfRangeMember |
| 339 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 340 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 341 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 342 |
Number of shares issued |
Concept (Shares) |
As Of |
|
ifrs-full:NumberOfSharesIssued |
| 343 |
Number of units granted in share-based payment arrangement |
Concept (Decimal) |
For Period |
|
giga:NumberOfUnitsGrantedInSharebasedPaymentArrangement |
| 344 |
Equity Issuance, Price per Unit |
Concept (Share) |
For Period |
|
giga:EquityIssuancePricePerUnit |
| 345 |
Proceeds from issuance of units |
Concept (Monetary) |
For Period |
Debit |
giga:ProceedsFromIssuanceOfUnits |
| 346 |
Weighted average exercise price of warrants granted in share-based payment arrangement |
Concept (Monetary) |
For Period |
Credit |
giga:WeightedAverageExercisePriceOfWarrantsGrantedInSharebasedPaymentArrangement |
| 347 |
Increase (decrease) in number of shares outstanding |
Concept (Shares) |
For Period |
|
ifrs-full:IncreaseDecreaseInNumberOfSharesOutstanding |
| 348 |
Fair value of warrants granted during period |
Concept (Monetary) |
For Period |
Credit |
giga:FairValueOfWarrantsGrantedDuringPeriod |
| 349 |
Payments for finder's fees |
Concept (Monetary) |
For Period |
Credit |
giga:PaymentsForFindersFees |
| 350 |
Payments for share issue costs |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:PaymentsForShareIssueCosts |
| 351 |
Number of broker warrants granted in share based payment arrangement |
Concept (Decimal) |
For Period |
|
giga:NumberOfBrokerWarrantsGrantedInShareBasedPaymentArrangement |
| 352 |
Fair value of broker warrants granted in share based payment arrangement |
Concept (Monetary) |
For Period |
Credit |
giga:FairValueOfBrokerWarrantsGrantedInShareBasedPaymentArrangement |
| 353 |
Weighted average share price, warrants granted |
Concept (Monetary) |
For Period |
Credit |
giga:WeightedAverageSharePriceWarrantsGranted |
| 354 |
Weighted average exercise price of warrants granted in share-based payment arrangement |
Concept (Monetary) |
For Period |
Credit |
giga:WeightedAverageExercisePriceOfWarrantsGrantedInShareBasedPaymentArrangement |
| 355 |
Expected volatility, warrants granted |
Concept (Percent) |
For Period |
|
giga:DescriptionOfExpectedVolatilityWarrantsGranted |
| 356 |
Expected life, warrants granted |
Concept (xbrli:durationItemType) |
For Period |
|
giga:DescriptionOfOptionLifeWarrantsGranted |
| 357 |
Risk free interest rate, warrants granted |
Concept (Percent) |
For Period |
|
giga:DescriptionOfRiskFreeInterestRateWarrantsGranted |
| 358 |
Expected dividend as percentage, warrants granted |
Concept (Percent) |
For Period |
|
giga:ExpectedDividendAsPercentageWarrantsGranted |
| 359 |
Loss for the year |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:ProfitLoss |
| 360 |
Weighted average number of shares outstanding basic and diluted |
Concept (Shares) |
For Period |
|
ifrs-full:AdjustedWeightedAverageShares |
| 361 |
Description of instruments with potential future dilutive effect not included in calculation of diluted earnings per share |
Concept (Text/String) |
For Period |
|
ifrs-full:DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareExplanatory |
| 362 |
Description of maximum term of options granted for share-based payment arrangement |
Concept (Text/String) |
For Period |
|
ifrs-full:DescriptionOfMaximumTermOfOptionsGrantedForSharebasedPaymentArrangement |
| 363 |
Number of share options granted in share-based payment arrangement |
Concept (Decimal) |
For Period |
|
ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement |
| 364 |
Weighted average fair value at measurement date, share options granted |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted |
| 365 |
Stock-based compensation |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees |
| 366 |
137 - Disclosure - Related party transactions (Narrative) (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfRelatedPartyExplanatoryDetails |
| 367 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 368 |
Categories of related parties [Axis] |
Axis |
|
|
ifrs-full:CategoriesOfRelatedPartiesAxis |
| 369 |
Related parties [Domain] |
Member |
|
|
ifrs-full:RelatedPartiesMember |
| 370 |
Key management personnel [Member] |
Member |
|
|
ifrs-full:KeyManagementPersonnelOfEntityOrParentMember |
| 371 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 372 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 373 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 374 |
Key management personnel compensation, short-term employee benefits |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits |
| 375 |
Key management personnel compensation, stock-based compensation |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment |
| 376 |
138 - Disclosure - Supplemental cash flow information (Narrative) (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfCashFlowStatementExplanatoryDetails |
| 377 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 378 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 379 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 380 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 381 |
Number of broker warrants granted in share based payment arrangement |
Concept (Decimal) |
For Period |
|
giga:NumberOfBrokerWarrantsGrantedInShareBasedPaymentArrangement |
| 382 |
Fair value of broker warrants granted in share based payment arrangement |
Concept (Monetary) |
For Period |
Credit |
giga:FairValueOfBrokerWarrantsGrantedInShareBasedPaymentArrangement |
| 383 |
139 - Disclosure - Subsequent events (Narrative) (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfEventsAfterReportingPeriodExplanatoryDetails |
| 384 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 385 |
Non-adjusting events after reporting period [Axis] |
Axis |
|
|
ifrs-full:NonadjustingEventsAfterReportingPeriodAxis |
| 386 |
Non-adjusting events after reporting period [Domain] |
Member |
|
|
ifrs-full:NonadjustingEventsMember |
| 387 |
Subsequent events [Member] |
Member |
|
|
giga:SubsequentEventsMember |
| 388 |
Subsequent events - exercise of warrants 1 [Member] |
Member |
|
|
giga:SubsequentEventsExerciseOfWarrantsOneMember |
| 389 |
Subsequent events - exercise of warrants 2 [Member] |
Member |
|
|
giga:SubsequentEventsExerciseOfWarrantsTwoMember |
| 390 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 391 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 392 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 393 |
Number of units granted |
Concept (Decimal) |
For Period |
|
giga:NumberOfUnitsGrantedInSharebasedPaymentArrangement |
| 394 |
Equity Issuance, Price per Unit |
Concept (Share) |
For Period |
|
giga:EquityIssuancePricePerUnit |
| 395 |
Proceeds from issuance of units |
Concept (Monetary) |
For Period |
Debit |
giga:ProceedsFromIssuanceOfUnits |
| 396 |
Weighted average exercise price of warrants granted in share-based payment arrangement |
Concept (Monetary) |
For Period |
Credit |
giga:WeightedAverageExercisePriceOfWarrantsGrantedInSharebasedPaymentArrangement |
| 397 |
Payments for finder's fees |
Concept (Monetary) |
For Period |
Credit |
giga:PaymentsForFindersFees |
| 398 |
Number of broker warrants granted in share based payment arrangement |
Concept (Decimal) |
For Period |
|
giga:NumberOfBrokerWarrantsGrantedInShareBasedPaymentArrangement |
| 399 |
Subscriptions received |
Concept (Monetary) |
As Of |
Credit |
giga:ShareSubscriptionsReceived |
| 400 |
Exercise of warrants (Shares) |
Concept (Shares) |
For Period |
|
giga:IncreaseDecreaseInNumberOfSharesOutstandingThroughExerciseOfWarrantsEquity |
| 401 |
Number of warrants exercised in share-based payment arrangement |
Concept (Decimal) |
For Period |
|
giga:NumberOfWarrantsExercisedInSharebasedPaymentArrangement |
| 402 |
Weighted average exercise price of warrants exercised in share-based payment arrangement |
Concept (Monetary) |
For Period |
Credit |
giga:WeightedAverageExercisePriceOfWarrantsExercisedInSharebasedPaymentArrangement |
| 403 |
Number of share options granted in share-based payment arrangement |
Concept (Decimal) |
For Period |
|
ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement |
| 404 |
Price of share options granted |
Concept (Monetary) |
For Period |
Credit |
giga:PriceOfShareOptionsGranted |
| 405 |
Description of vesting requirements for share-based payment arrangement |
Concept (Text/String) |
For Period |
|
ifrs-full:DescriptionOfVestingRequirementsForSharebasedPaymentArrangement |
| 406 |
140 - Disclosure - Disclosure of detailed information about estimated useful life or depreciation rate (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutEstimatedUsefulLifeOrDepreciationRateExplanatoryDetails |
| 407 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 408 |
Classes of property, plant and equipment [Axis] |
Axis |
|
|
ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis |
| 409 |
Property, plant and equipment [Domain] |
Member |
|
|
ifrs-full:PropertyPlantAndEquipmentMember |
| 410 |
Motor vehicles [Member] |
Member |
|
|
ifrs-full:MotorVehiclesMember |
| 411 |
Computer equipment [Member] |
Member |
|
|
ifrs-full:ComputerEquipmentMember |
| 412 |
Exploration and office equipment [Member] |
Member |
|
|
ifrs-full:ExplorationAndEvaluationAssetsMember |
| 413 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 414 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 415 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 416 |
Useful lives or depreciation rates, property, plant and equipment |
Concept (Text/String) |
For Period |
|
ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment |
| 417 |
141 - Disclosure - Disclosure of detailed information about trade and other receivables (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutTradeAndOtherReceivablesExplanatoryDetails |
| 418 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 419 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 420 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 421 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 422 |
Goods and Service sales tax |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:CurrentValueAddedTaxReceivables |
| 423 |
British Columbia mining tax credits |
Concept (Monetary) |
As Of |
Debit |
giga:CurrentBritishColumbiaMiningTaxCredits |
| 424 |
Interest receivable |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:CurrentInterestReceivable |
| 425 |
Other receivable |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:OtherCurrentReceivables |
| 426 |
Trade and other current receivables |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:TradeAndOtherCurrentReceivables |
| 427 |
142 - Disclosure - Disclosure of detailed information about property, plant and equipment (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatoryDetails |
| 428 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 429 |
Classes of property, plant and equipment [Axis] |
Axis |
|
|
ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis |
| 430 |
Property, plant and equipment [Domain] |
Member |
|
|
ifrs-full:PropertyPlantAndEquipmentMember |
| 431 |
Motor vehicles [Member] |
Member |
|
|
ifrs-full:MotorVehiclesMember |
| 432 |
Computer equipment [Member] |
Member |
|
|
ifrs-full:ComputerEquipmentMember |
| 433 |
Exploration and office equipment [Member] |
Member |
|
|
ifrs-full:ExplorationAndEvaluationAssetsMember |
| 434 |
Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [Axis] |
Axis |
|
|
ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis |
| 435 |
Carrying amount [Domain] |
Member |
|
|
ifrs-full:CarryingAmountMember |
| 436 |
Cost [Member] |
Member |
|
|
ifrs-full:AtCostMember |
| 437 |
Depreciation [Member] |
Member |
|
|
ifrs-full:AccumulatedDepreciationAndAmortisationMember |
| 438 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 439 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 440 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 441 |
Property, plant and equipment at beginning of period |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:PropertyPlantAndEquipment |
| 442 |
Additions |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment |
| 443 |
Charge for the year |
Concept (Monetary) |
For Period |
|
ifrs-full:DepreciationPropertyPlantAndEquipment |
| 444 |
Property, plant and equipment at end of period |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:PropertyPlantAndEquipment |
| 445 |
143 - Disclosure - Disclosure of detailed information about deferred exploration costs (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutDeferredExplorationCostsExplanatoryDetails |
| 446 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 447 |
Components of exploration costs [Axis] |
Axis |
|
|
giga:ComponentsOfExplorationCostsAxis |
| 448 |
Components of exploration costs [Domain] |
Member |
|
|
giga:ComponentsOfExplorationCostsDomain |
| 449 |
Mineral property interests [Member] |
Member |
|
|
ifrs-full:MiningPropertyMember |
| 450 |
Assays and testing [Member] |
Member |
|
|
giga:AssaysAndTestingMember |
| 451 |
Claims renewal / staking [Member] |
Member |
|
|
giga:ClaimsRenewalStakingMember |
| 452 |
Drilling [Member] |
Member |
|
|
giga:DrillingMember |
| 453 |
Environmental studies [Member] |
Member |
|
|
giga:EnvironmentalStudiesMember |
| 454 |
Exploration data management [Member] |
Member |
|
|
giga:ExplorationDataManagementMember |
| 455 |
First Nations [Member] |
Member |
|
|
giga:FirstNationsMember |
| 456 |
Geochemistry [Member] |
Member |
|
|
giga:GeochemistryMember |
| 457 |
Geological and engineering services [Member] |
Member |
|
|
giga:GeologicalAndEngineeringServicesMember |
| 458 |
Geophysical services [Member] |
Member |
|
|
giga:GeophysicalServicesMember |
| 459 |
Metallurgy [Member] |
Member |
|
|
giga:MetallurgyMember |
| 460 |
Petrographic work [Member] |
Member |
|
|
giga:PetrographicWorkMember |
| 461 |
Project management [Member] |
Member |
|
|
giga:ProjectManagementMember |
| 462 |
Survey, mapping and camp [Member] |
Member |
|
|
giga:SurveyMappingAndCampMember |
| 463 |
Transportation [Member] |
Member |
|
|
giga:TransportationMember |
| 464 |
Cost recovery [Member] |
Member |
|
|
giga:CostRecoveryMember |
| 465 |
Property impairments [Member] |
Member |
|
|
giga:PropertyImpairmentsMember |
| 466 |
BC refundable mining tax credits [Member] |
Member |
|
|
giga:BcRefundableMiningTaxCreditsMember |
| 467 |
Federal non-refundable mining tax credits, net of valuation allowance [Member] |
Member |
|
|
giga:FederalNonrefundableMiningTaxCreditsNetOfValuationAllowanceMember |
| 468 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 469 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 470 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 471 |
Exploration and evaluation assets, beginning balance |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources |
| 472 |
Property impairments |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:ImpairmentLoss |
| 473 |
Change in exploration and evaluation assets |
Concept (Monetary) |
For Period |
Debit |
giga:ChangeInExplorationAndEvaluationAssets |
| 474 |
Exploration and evaluation assets, ending balance |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources |
| 475 |
144 - Disclosure - Disclosure of detailed information about trade and other payables (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutTradeAndOtherPayablesExplanatoryDetails |
| 476 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 477 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 478 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 479 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 480 |
Trade payables |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:TradeAndOtherPayablesToTradeSuppliers |
| 481 |
Accrued liabilities |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:CurrentAccruedExpensesAndOtherCurrentLiabilities |
| 482 |
Total trade and other current payables |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:TradeAndOtherCurrentPayables |
| 483 |
145 - Disclosure - Disclosure of lease prepayments (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfLeasePrepaymentsExplanatoryDetails |
| 484 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 485 |
Maturity [Axis] |
Axis |
|
|
ifrs-full:MaturityAxis |
| 486 |
Expiration date [Domain] |
Member |
|
|
giga:ExpirationDateDomain |
| 487 |
Payable not later than one year [Member] |
Member |
|
|
ifrs-full:NotLaterThanOneYearMember |
| 488 |
Payable later than one year and not later than five years [Member] |
Member |
|
|
ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember |
| 489 |
2037 [Member] |
Member |
|
|
giga:TwoZeroThreeSevenMember |
| 490 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 491 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 492 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 493 |
Minimum operating lease payments |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:MinimumOperatingLeasePayments |
| 494 |
146 - Disclosure - Disclosure of detailed information about effective income tax expense recovery (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutEffectiveIncomeTaxExpenseRecoveryExplanatoryDetails |
| 495 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 496 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 497 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 498 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 499 |
Loss before income taxes |
Concept (Monetary) |
For Period |
Credit |
ifrs-full:AccountingProfit |
| 500 |
Statutory tax rate |
Concept (Percent) |
For Period |
|
ifrs-full:ApplicableTaxRate |
| 501 |
Expected income tax recovery at the statutory tax rate |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:TaxExpenseIncomeAtApplicableTaxRate |
| 502 |
Permanent differences |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss |
| 503 |
Tax pool not recognized |
Concept (Monetary) |
For Period |
Debit |
giga:TaxEffectOfTaxPoolNotRecognized |
| 504 |
Other |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome |
| 505 |
Income tax recovery |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:DeferredTaxExpenseIncome |
| 506 |
147 - Disclosure - Disclosure of deferred taxes (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDeferredTaxesExplanatoryDetails |
| 507 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 508 |
Components deferred tax assets and liabilities [Axis] |
Axis |
|
|
giga:ComponentsDeferredTaxAssetsAndLiabilitiesAxis |
| 509 |
Components deferred tax assets and liabilities [Domain] |
Member |
|
|
giga:ComponentsDeferredTaxAssetsAndLiabilitiesDomain |
| 510 |
Federal investment tax credits [Member] |
Member |
|
|
giga:FederalInvestmentTaxCreditsMember |
| 511 |
Exploration and office equipment [Member] |
Member |
|
|
ifrs-full:ExplorationAndEvaluationAssetsMember |
| 512 |
Non-capital loss carryforwards [Member] |
Member |
|
|
giga:NoncapitalLossCarryforwardsMember |
| 513 |
Other [Member] |
Member |
|
|
giga:OtherDeferredTaxAssetsAndLiabilitiesMember |
| 514 |
Valuation allowance [Member] |
Member |
|
|
giga:ValuationAllowanceMember |
| 515 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 516 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 517 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 518 |
Deferred tax assets and liabilities |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:DeferredTaxLiabilityAsset |
| 519 |
148 - Disclosure - Disclosure of detailed information about tax pools available (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutTaxPoolsAvailableExplanatoryDetails |
| 520 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 521 |
Maturity [Axis] |
Axis |
|
|
ifrs-full:MaturityAxis |
| 522 |
Expiration date [Domain] |
Member |
|
|
giga:ExpirationDateDomain |
| 523 |
2025 [Member] |
Member |
|
|
giga:TwoZeroTwoFiveMember |
| 524 |
2026 [Member] |
Member |
|
|
giga:TwoZeroTwoSixMember |
| 525 |
2027 [Member] |
Member |
|
|
giga:TwoZeroTwoSevenMember |
| 526 |
2028 [Member] |
Member |
|
|
giga:TwoZeroTwoEightMember |
| 527 |
2029 [Member] |
Member |
|
|
giga:TwoZeroTwoNineMember |
| 528 |
2030 [Member] |
Member |
|
|
giga:TwoZeroThreeZeroMember |
| 529 |
2031 [Member] |
Member |
|
|
giga:TwoZeroThreeOneMember |
| 530 |
2032 [Member] |
Member |
|
|
giga:TwoZeroThreeTwoMember |
| 531 |
2033 [Member] |
Member |
|
|
giga:TwoZeroThreeThreeMember |
| 532 |
2034 [Member] |
Member |
|
|
giga:TwoZeroThreeFourMember |
| 533 |
2035 [Member] |
Member |
|
|
giga:TwoZeroThreeFiveMember |
| 534 |
2036 [Member] |
Member |
|
|
giga:TwoZeroThreeSixMember |
| 535 |
No expiry [Member] |
Member |
|
|
giga:NoExpiryMember |
| 536 |
2037 [Member] |
Member |
|
|
giga:TwoZeroThreeSevenMember |
| 537 |
Temporary difference, unused tax losses and unused tax credits [Axis] |
Axis |
|
|
ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis |
| 538 |
Temporary difference, unused tax losses and unused tax credits [Domain] |
Member |
|
|
ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember |
| 539 |
Canadian resource pools [Member] |
Member |
|
|
giga:CanadianResourcePoolsMember |
| 540 |
Non-capital losses [Member] |
Member |
|
|
giga:NoncapitalLossesMember |
| 541 |
Other [Member] |
Member |
|
|
ifrs-full:OtherTemporaryDifferencesMember |
| 542 |
Canadian federal investment tax credit losses [Member] |
Member |
|
|
giga:CanadianFederalInvestmentTaxCreditLossesMember |
| 543 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 544 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 545 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 546 |
Deductible temporary differences for which no deferred tax asset is recognised |
Concept (Monetary) |
As Of |
|
ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised |
| 547 |
Unused tax losses for which no deferred tax asset recognised |
Concept (Monetary) |
As Of |
|
ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised |
| 548 |
Unused tax credits for which no deferred tax asset recognised |
Concept (Monetary) |
As Of |
|
ifrs-full:UnusedTaxCreditsForWhichNoDeferredTaxAssetRecognised |
| 549 |
149 - Disclosure - Disclosure of number and weighted average exercise prices of share options (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatoryDetails |
| 550 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 551 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 552 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 553 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 554 |
Number of share options outstanding in share-based payment arrangement at beginning of period |
Concept (Decimal) |
As Of |
|
ifrs-full:NumberOfOutstandingShareOptions |
| 555 |
Weighted average exercise price of share options outstanding in share-based payment arrangement at beginning of period |
Concept (Monetary) |
As Of |
|
ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement |
| 556 |
Number of share options granted in share-based payment arrangement |
Concept (Decimal) |
For Period |
|
ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement |
| 557 |
Weighted average exercise price of share options granted in share-based payment arrangement |
Concept (Monetary) |
For Period |
|
ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement |
| 558 |
Number of share options exercised in share-based payment arrangement |
Concept (Decimal) |
For Period |
|
ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement |
| 559 |
Weighted average exercise price of share options exercised in share-based payment arrangement |
Concept (Monetary) |
For Period |
|
ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement |
| 560 |
Number of share options expired in share-based payment arrangement |
Concept (Decimal) |
For Period |
|
ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement |
| 561 |
Weighted average exercise price of share options expired in share-based payment arrangement |
Concept (Monetary) |
For Period |
|
ifrs-full:WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement |
| 562 |
Number of share options outstanding in share-based payment arrangement at end of period |
Concept (Decimal) |
As Of |
|
ifrs-full:NumberOfOutstandingShareOptions |
| 563 |
Weighted average exercise price of share options outstanding in share-based payment arrangement at end of period |
Concept (Monetary) |
As Of |
|
ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement |
| 564 |
Number of share options exercisable in share-based payment arrangement |
Concept (Decimal) |
As Of |
|
ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement |
| 565 |
Weighted average exercise price of share options exercisable in share-based payment arrangement |
Concept (Monetary) |
As Of |
|
ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement |
| 566 |
150 - Disclosure - Disclosure of number and weighted average remaining contractual life of outstanding share options (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsExplanatoryDetails |
| 567 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 568 |
Range [Axis] |
Axis |
|
|
ifrs-full:RangeAxis |
| 569 |
Ranges [Domain] |
Member |
|
|
ifrs-full:RangesMember |
| 570 |
Range 1 [Member] |
Member |
|
|
giga:RangeOneMember |
| 571 |
Range 2 [Member] |
Member |
|
|
giga:RangeTwoMember |
| 572 |
Range 3 [Member] |
Member |
|
|
giga:RangeThreeMember |
| 573 |
Range 4 [Member] |
Member |
|
|
giga:RangeFourMember |
| 574 |
Range 5 [Member] |
Member |
|
|
giga:RangeFiveMember |
| 575 |
Range 6 [Member] |
Member |
|
|
giga:RangeSixMember |
| 576 |
Components of equity [Axis] |
Axis |
|
|
ifrs-full:ComponentsOfEquityAxis |
| 577 |
Equity components [Domain] |
Member |
|
|
ifrs-full:EquityMember |
| 578 |
Stock options [Member] |
Member |
|
|
ifrs-full:OptionContractMember |
| 579 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 580 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 581 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 582 |
Weighted average exercise price |
Concept (Monetary) |
As Of |
|
ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement |
| 583 |
Weighted average contractual life (years) |
Concept (Decimal) |
As Of |
|
ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions |
| 584 |
Number of options outstanding |
Concept (Decimal) |
As Of |
|
ifrs-full:NumberOfOutstandingShareOptions |
| 585 |
151 - Disclosure - Disclosure of detailed information about options, valuation assumptions (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutOptionsValuationAssumptionsExplanatoryDetails |
| 586 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 587 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 588 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 589 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 590 |
Share price |
Concept (Monetary) |
For Period |
|
ifrs-full:WeightedAverageSharePriceShareOptionsGranted |
| 591 |
Exercise price |
Concept (Monetary) |
For Period |
|
ifrs-full:ExercisePriceShareOptionsGranted |
| 592 |
Expected life of options (years) |
Concept (Decimal) |
For Period |
|
ifrs-full:DescriptionOfOptionLifeShareOptionsGranted |
| 593 |
Annualized volatility |
Concept (Percent) |
For Period |
|
ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted |
| 594 |
Risk-free interest rate |
Concept (Percent) |
For Period |
|
ifrs-full:DescriptionOfRiskFreeInterestRateShareOptionsGranted |
| 595 |
Dividend rate |
Concept (Percent) |
For Period |
|
ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted |
| 596 |
152 - Disclosure - Disclosure of detailed information about warrants, activity (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutWarrantsActivityExplanatoryDetails |
| 597 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 598 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 599 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 600 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 601 |
Number of warrants outstanding in share-based payment arrangement |
Concept (Decimal) |
As Of |
|
giga:NumberOfOutstandingWarrants |
| 602 |
Weighted average exercise price of warrants outstanding in share-based payment arrangement |
Concept (Monetary) |
As Of |
Credit |
giga:WeightedAverageExercisePriceOfWarrantsOutstandingInSharebasedPaymentArrangement |
| 603 |
Number of warrants granted in share-based payment arrangement |
Concept (Decimal) |
For Period |
|
giga:NumberOfWarrantsGrantedInSharebasedPaymentArrangement |
| 604 |
Weighted average exercise price of warrants granted in share-based payment arrangement |
Concept (Monetary) |
For Period |
Credit |
giga:WeightedAverageExercisePriceOfWarrantsGrantedInSharebasedPaymentArrangement |
| 605 |
Number of warrants exercised in share-based payment arrangement |
Concept (Decimal) |
For Period |
|
giga:NumberOfWarrantsExercisedInSharebasedPaymentArrangement |
| 606 |
Weighted average exercise price of warrants exercised in share-based payment arrangement |
Concept (Monetary) |
For Period |
Credit |
giga:WeightedAverageExercisePriceOfWarrantsExercisedInSharebasedPaymentArrangement |
| 607 |
Number of warrants expired in share-based payment arrangement |
Concept (Decimal) |
For Period |
|
giga:NumberOfWarrantsExpiredInSharebasedPaymentArrangement |
| 608 |
Weighted average exercise price of warrants expired in share-based payment arrangement |
Concept (Monetary) |
For Period |
Credit |
giga:WeightedAverageExercisePriceOfWarrantsExpiredInSharebasedPaymentArrangement |
| 609 |
Number of warrants outstanding in share-based payment arrangement |
Concept (Decimal) |
As Of |
|
giga:NumberOfOutstandingWarrants |
| 610 |
Weighted average exercise price of warrants outstanding in share-based payment arrangement |
Concept (Monetary) |
As Of |
Credit |
giga:WeightedAverageExercisePriceOfWarrantsOutstandingInSharebasedPaymentArrangement |
| 611 |
153 - Disclosure - Disclosure of detailed information about warrants outstanding (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutWarrantsOutstandingExplanatoryDetails |
| 612 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 613 |
Range [Axis] |
Axis |
|
|
ifrs-full:RangeAxis |
| 614 |
Ranges [Domain] |
Member |
|
|
ifrs-full:RangesMember |
| 615 |
Range 1 [Member] |
Member |
|
|
giga:RangeOneMember |
| 616 |
Range 2 [Member] |
Member |
|
|
giga:RangeTwoMember |
| 617 |
Range 3 [Member] |
Member |
|
|
giga:RangeThreeMember |
| 618 |
Range 4 [Member] |
Member |
|
|
giga:RangeFourMember |
| 619 |
Range 5 [Member] |
Member |
|
|
giga:RangeFiveMember |
| 620 |
Range 6 [Member] |
Member |
|
|
giga:RangeSixMember |
| 621 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 622 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 623 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 624 |
Weighted average exercise price |
Concept (Monetary) |
As Of |
Credit |
giga:WeightedAverageExercisePriceOfWarrantsOutstandingInSharebasedPaymentArrangement |
| 625 |
Weighted average contractual life |
Concept (Decimal) |
As Of |
|
giga:WeightedAverageRemainingContractualLifeOfOutstandingWarrants |
| 626 |
Number of warrants outstanding |
Concept (Decimal) |
As Of |
|
giga:NumberOfOutstandingWarrants |
| 627 |
154 - Disclosure - Disclosure of information about key management personnel (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfInformationAboutKeyManagementPersonnelExplanatoryDetails |
| 628 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 629 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 630 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 631 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 632 |
Consulting fees (include in office and general) |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:AmountIncurredByEntityForProvisionOfKeyManagementPersonnelServicesProvidedBySeparateManagementEntity |
| 633 |
Interest expense |
Concept (Monetary) |
For Period |
Debit |
giga:KeyManagementPersonnelCompensationInterestExpense |
| 634 |
Management fees |
Concept (Monetary) |
For Period |
Debit |
giga:KeyManagementPersonnelCompensationManagementFees |
| 635 |
Key management personnel compensation, stock-based compensation |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment |
| 636 |
Key management personnel compensation |
Concept (Monetary) |
For Period |
Debit |
ifrs-full:KeyManagementPersonnelCompensation |
| 637 |
155 - Disclosure - Disclosure of maturity analysis for derivative financial liabilities (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureMaturityAnalysisForDerivativeFinancialLiabilitiesDetails |
| 638 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 639 |
Maturity [Axis] |
Axis |
|
|
ifrs-full:MaturityAxis |
| 640 |
Expiration date [Domain] |
Member |
|
|
giga:ExpirationDateDomain |
| 641 |
Within one year [Member] |
Member |
|
|
ifrs-full:NotLaterThanOneYearMember |
| 642 |
Between one and five years [Member] |
Member |
|
|
ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember |
| 643 |
More than five years [Member] |
Member |
|
|
ifrs-full:LaterThanFiveYearsMember |
| 644 |
2037 [Member] |
Member |
|
|
giga:TwoZeroThreeSevenMember |
| 645 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 646 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 647 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 648 |
Trade payables and accrued liabilities |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:TradeAndOtherCurrentPayables |
| 649 |
156 - Disclosure - Disclosure of financial assets (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfFinancialAssetsExplanatoryDetails |
| 650 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 651 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 652 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 653 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 654 |
Cash and cash equivalents |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:CashAndCashEquivalents |
| 655 |
Reclamation deposits |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:LongtermDeposits |
| 656 |
Financial assets |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:FinancialAssetsAtFairValue |
| 657 |
157 - Disclosure - Disclosure of financial liabilities (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfFinancialLiabilitiesExplanatoryDetails |
| 658 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 659 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 660 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 661 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 662 |
Trade payables and accrued liabilities |
Concept (Monetary) |
As Of |
Credit |
ifrs-full:TradeAndOtherCurrentPayables |
| 663 |
158 - Disclosure - Disclosure of fair value measurement of assets (Details) |
Network |
* |
* |
http://www.gigametals.com/taxonomy/role/DisclosureDisclosureOfFairValueMeasurementOfAssetsExplanatoryDetails |
| 664 |
Statement [Table] |
Table |
* |
* |
giga:StatementTable |
| 665 |
Levels of fair value hierarchy [Axis] |
Axis |
|
|
ifrs-full:LevelsOfFairValueHierarchyAxis |
| 666 |
All levels of fair value hierarchy [Domain] |
Member |
|
|
ifrs-full:AllLevelsOfFairValueHierarchyMember |
| 667 |
Level 1 [Member] |
Member |
|
|
ifrs-full:Level1OfFairValueHierarchyMember |
| 668 |
Level 2 [Member] |
Member |
|
|
ifrs-full:Level2OfFairValueHierarchyMember |
| 669 |
Level 3 [Member] |
Member |
|
|
ifrs-full:Level3OfFairValueHierarchyMember |
| 670 |
Legal Entity [Axis] |
Axis |
|
|
dei:LegalEntityAxis |
| 671 |
Entity [Domain] |
Member |
|
|
dei:EntityDomain |
| 672 |
Statement [Line Items] |
LineItems |
|
|
giga:StatementLineItems |
| 673 |
Cash |
Concept (Monetary) |
As Of |
Debit |
ifrs-full:Cash |