PLATINUM GROUP METALS LTD (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line	Label	Object Class	Period Type	Balance	Report ElementName
1	101 - Document - Document and Entity Information	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DocumentAndEntityInformation
2	Statement [Table]	Table	*	*	ptm:StatementTable
3	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
4	Entity [Domain]	Member			dei:EntityDomain
5	Statement [Line Items]	LineItems			ptm: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.platinumgroupmetals.net/taxonomy/role/BalanceSheet
23	Statement [Table]	Table	*	*	ptm:StatementTable
24	Statement [Line Items]	LineItems			ptm:StatementLineItems
25	ASSETS	Abstract			ifrs-full:AssetsAbstract
26	Current	Abstract			ifrs-full:CurrentAssetsAbstract
27	Cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
28	Restricted Cash - Waterberg	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentRestrictedCashAndCashEquivalents
29	Marketable Securities	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentFinancialAssetsAvailableforsale
30	Amounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
31	Prepaid expenses	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentPrepaidExpenses
32	Asset held for sale	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentAssets
33	Total current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
34	Performance bonds	Concept (Monetary)	As Of	Debit	ptm:PerformanceBonds
35	Exploration and evaluation assets	Concept (Monetary)	As Of	Debit	ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources
36	Property, plant and equipment	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
37	Total assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
38	Liabilities	Abstract			ifrs-full:LiabilitiesAbstract
39	Current	Abstract			ifrs-full:CurrentLiabilitiesAbstract
40	Accounts payable and other liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
41	Loan payable	Concept (Monetary)	As Of	Credit	ifrs-full:OtherPayables
42	Total current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
43	Loans payable	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentLiabilities
44	Convertible notes	Concept (Monetary)	As Of	Credit	ifrs-full:OtherBorrowings
45	Warrant derivative	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentDerivativeFinancialLiabilities
46	Total liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
47	SHAREHOLDERS EQUITY	Abstract			ifrs-full:EquityAbstract
48	Share capital	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
49	Contributed surplus	Concept (Monetary)	As Of	Credit	ifrs-full:AdditionalPaidinCapital
50	Accumulated other comprehensive loss	Concept (Monetary)	As Of	Credit	ifrs-full:AccumulatedOtherComprehensiveIncome
51	Deficit	Concept (Monetary)	As Of	Credit	ifrs-full:RetainedEarnings
52	Total shareholders equity attributable to shareholders of Platinum Group Metals Ltd.	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAttributableToOwnersOfParent
53	Non-controlling interest	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
54	Total shareholders equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
55	Total liabilities and shareholders equity	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAndLiabilities
56	103 - Statement - Consolidated Statements of Loss and Comprehensive Loss (Income)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/IncomeStatement
57	Statement [Table]	Table	*	*	ptm:StatementTable
58	Statement [Line Items]	LineItems			ptm:StatementLineItems
59	EXPENSES	Abstract			ifrs-full:ExpenseByNatureAbstract
60	General and administrative	Concept (Monetary)	For Period	Debit	ifrs-full:GeneralAndAdministrativeExpense
61	Interest	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpense
62	Foreign exchange loss	Concept (Monetary)	For Period	Debit	ifrs-full:NetForeignExchangeLoss
63	Foreign exchange (gain)	Concept (Monetary)	For Period	Credit	ifrs-full:NetForeignExchangeGain
64	Stock compensation expense	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
65	Maseve closure, care and maintenance costs	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseOfRestructuringActivities
66	Impairment charge	Concept (Monetary)	For Period	Debit	ifrs-full:ImpairmentLoss
67	Operating expenses, total	Concept (Monetary)	For Period	Debit	ifrs-full:OperatingExpense
68	Gain on fair value of convertible debt derivative	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
69	Loss on Asset Held for Sale	Concept (Monetary)	For Period	Credit	ptm:GainsLossesOnHeldforsaleAssets
70	Loss on fair value of marketable securities	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnAvailableforsaleFinancialAssets
71	Net finance income	Concept (Monetary)	For Period	Credit	ifrs-full:FinanceIncome
72	Loss for the year before income taxes	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
73	Deferred income tax expense (recovery)	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncome
74	Loss for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromContinuingOperations
75	Currency translation adjustment	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationNetOfTax
76	Tax impact items previously recorded to comprehensive loss	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss
77	Comprehensive loss for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
78	Loss attributable to:	Abstract			ifrs-full:ProfitLossAttributableToAbstract
79	Shareholders of Platinum Group Metals Ltd.	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToOwnersOfParent
80	Non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToNoncontrollingInterests
81	Loss	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
82	Comprehensive income attributable to:	Abstract			ifrs-full:ComprehensiveIncomeAttributableToAbstract
83	Shareholders of Platinum Group Metals Ltd.	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
84	Non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
85	Basic and diluted loss per common share	Concept (Share)	For Period		ifrs-full:BasicAndDilutedEarningsLossPerShare
86	Weighted average number of common shares outstanding, Basic and diluted	Concept (Shares)	For Period		ifrs-full:AdjustedWeightedAverageShares
87	104 - Statement - Consolidated Statements of Changes in Equity	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/StockholdersEquity
88	Statement [Table]	Table	*	*	ptm:StatementTable
89	Components of equity [Axis]	Axis			ifrs-full:ComponentsOfEquityAxis
90	Equity components [Domain]	Member			ifrs-full:EquityMember
91	Share Capital [Member]	Member			ifrs-full:IssuedCapitalMember
92	Contributed Surplus [Member]	Member			ifrs-full:AdditionalPaidinCapitalMember
93	Accumulated Other Comprehensive Income [Member]	Member			ifrs-full:AccumulatedOtherComprehensiveIncomeMember
94	Deficit [Member]	Member			ifrs-full:RetainedEarningsMember
95	Attributable to Shareholders of the Parent Company [Member]	Member			ifrs-full:EquityAttributableToOwnersOfParentMember
96	Non-Controlling Interest [Member]	Member			ifrs-full:NoncontrollingInterestsMember
97	Statement [Line Items]	LineItems			ptm:StatementLineItems
98	Beginning Balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
99	Beginning Balance (Shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesOutstanding
100	Share based compensation	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
101	Shares issued for interest on convertible note	Concept (Monetary)	For Period	Credit	ptm:IncreaseDecreaseThroughSharesIssuedForInterestOnConvertibleNote
102	Shares issued for interest on convertible note (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughSharesIssuedForInterestOnConvertibleNoteShares
103	Share issuance - financing	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromIssueOfOrdinaryShares
104	Share issuance - financing (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughShareIssuanceForFinancingShares
105	Share issuance costs	Concept (Monetary)	For Period	Debit	ifrs-full:ShareIssueRelatedCost
106	Units issued - financing	Concept (Monetary)	For Period	Credit	ptm:IncreaseDecreaseThroughUnitsIssuedFinancing
107	Units issued - financing (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughUnitsIssuedFinancingShares
108	Unit issuance costs	Concept (Monetary)	For Period	Debit	ptm:UnitIssueRelatedCost
109	Shares issued on conversion of convertible note	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughConversionOfConvertibleInstruments
110	Shares issued on conversion of convertible note (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseInNumberOfSharesOutstandinghroughConversionOfConvertibleInstruments
111	Shares issued for loan facilities	Concept (Monetary)	For Period	Credit	ptm:IncreaseDecreaseThroughSharesIssuedForLoanFacilities
112	Shares issued for loan facilities (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughSharesIssuedForLoanFacilitiesShares
113	Transactions with non-controlling interest	Concept (Monetary)	For Period	Credit	ptm:TransactionsWithNonControllingInterest
114	Transactions with non-controlling interest (Shares)	Concept (Shares)	For Period		ptm:TransactionsWithNonControllingInterestShares
115	Shares issued upon the exercise of options	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughExerciseOfOptions
116	Shares issued upon the exercise of options (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseInNumberOfSharesOutstandingThroughExerciseOfOptions
117	Non-controlling interest impact of the sale of Maseve	Concept (Monetary)	For Period	Credit	ptm:IncreaseDecreaseThroughNonControllingInterestImpactOfTheSaleOfMaseve
118	Equity impact from partial sale of Waterberg	Concept (Monetary)	For Period	Credit	ptm:IncreaseDecreaseThroughEquityImpactFromPartialSaleOfWaterberg
119	Contributions of Waterberg JV Co	Concept (Monetary)	For Period	Credit	ptm:IncreaseDecreaseThroughContributionsOfWaterbergJVCo
120	Foreign currency translation adjustment	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
121	Tax impact from Waterberg and other equity transactions	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss
122	Net loss for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
123	Ending Balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
124	Ending Balance (Shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesOutstanding
125	105 - Statement - Consolidated Statements of Cash Flows	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/CashFlows
126	Statement [Table]	Table	*	*	ptm:StatementTable
127	Statement [Line Items]	LineItems			ptm:StatementLineItems
128	OPERATING ACTIVITIES	Abstract			ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
129	Loss for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
130	Add items not affecting cash:	Abstract			ifrs-full:AdjustmentsForReconcileProfitLossAbstract
131	Depreciation	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
132	Effective interest	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForInterestExpense
133	Unrealized foreign exchange gain	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
134	Gain on fair value of convertible debt derivative	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
135	Loss on asset held for sale	Concept (Monetary)	For Period	Debit	ptm:AdjustmentsForLossOnAssetHeldForSale
136	Unrealized loss on marketable securities	Concept (Monetary)	For Period	Debit	ptm:AdjustmentsForUnrealizedLossOnMarketableSecurities
137	Deferred income tax expense (recovery)	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDeferredTaxExpense
138	Stock compensation expense	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForSharebasedPayments
139	Impairment charge	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
140	Net change in non-cash working capital	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseInWorkingCapital
141	Net cash flows from (used in) operating activities	Concept (Monetary)	For Period		ifrs-full:CashFlowsFromUsedInOperatingActivities
142	FINANCING ACTIVITIES	Abstract			ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
143	Proceeds from issuance of equity	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromIssuingShares
144	Equity issuance costs	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsForShareIssueCosts
145	Share issuance - stock options	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromExerciseOfOptions
146	Cash proceeds convertible note	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromNoncurrentBorrowings
147	Costs associated with convertible note	Concept (Monetary)	For Period	Credit	ptm:PaymentsForCostsAssociatedWithConvertibleNotes
148	Cash received from sale of Maseve	Concept (Monetary)	For Period	Debit	ptm:ProceedsFromSaleOfMaseve
149	Sprott interest paid	Concept (Monetary)	For Period	Credit	ifrs-full:InterestPaidClassifiedAsFinancingActivities
150	Interest capitalized on debt proceeds	Concept (Monetary)	For Period	Debit	ptm:ProceedsFromInterestCapitalizedOnDebtProceeds
151	Cash proceeds from debt	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
152	Sprott principal repayments	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
153	Repayment of Liberty debt and production payment termination	Concept (Monetary)	For Period	Credit	ptm:RepaymentOfLibertyDebtAndProductionPaymentTermination
154	Costs associated with the debt	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsForDebtIssueCosts
155	Net cash flows from (used in) financing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInFinancingActivities
156	INVESTING ACTIVITIES	Abstract			ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
157	Acquisition of property, plant and equipment	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
158	Proceeds from partial sale of interest in Waterberg	Concept (Monetary)	For Period	Debit	ptm:ProceedsFromPartialSaleOfInterestInWaterberg
159	Transfer to restricted cash (Waterberg)	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInDecreaseIncreaseInRestrictedCashAndCashEquivalents
160	Expenditures from restricted cash (Waterberg)	Concept (Monetary)	For Period	Debit	ptm:ExpendituresFromRestrictedCashWaterberg
161	Fees paid on asset held for sale	Concept (Monetary)	For Period	Credit	ptm:FeesPaidOnAssetHeldForSale
162	Proceeds from the sale of concentrate	Concept (Monetary)	For Period	Debit	ptm:ProceedsFromSaleOfConcentrate
163	Waterberg exploration expenditures	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsForExplorationAndEvaluationExpenses
164	Performance bonds	Concept (Monetary)	For Period	Credit	ptm:PaymentsForPerformanceBonds
165	Net cash flows from (used in) investing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInInvestingActivities
166	Net decrease in cash and cash equivalents	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
167	Effect of foreign exchange on cash and cash equivalents	Concept (Monetary)	For Period	Debit	ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
168	Cash and cash equivalents at beginning of period	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
169	Cash and cash equivalents at end of period	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
170	106 - Disclosure - NATURE OF OPERATIONS AND GOING CONCERN	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfNatureOfOperationsExplanatoryTextBlock
171	Statement [Table]	Table	*	*	ptm:StatementTable
172	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
173	Entity [Domain]	Member			dei:EntityDomain
174	Statement [Line Items]	LineItems			ptm:StatementLineItems
175	NATURE OF OPERATIONS AND GOING CONCERN [Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfNatureOfOperationsExplanatory
176	107 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfSummaryOfSignificantAccountingPoliciesExplanatoryTextBlock
177	Statement [Table]	Table	*	*	ptm:StatementTable
178	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
179	Entity [Domain]	Member			dei:EntityDomain
180	Statement [Line Items]	LineItems			ptm:StatementLineItems
181	BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
182	108 - Disclosure - SIGNIFICANT ACCOUNTING JUDGEMENTS AND ESTIMATES	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfAccountingJudgementsAndEstimatesExplanatoryTextBlock
183	Statement [Table]	Table	*	*	ptm:StatementTable
184	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
185	Entity [Domain]	Member			dei:EntityDomain
186	Statement [Line Items]	LineItems			ptm:StatementLineItems
187	SIGNIFICANT ACCOUNTING JUDGEMENTS AND ESTIMATES [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
188	109 - Disclosure - MARKETABLE SECURITIES	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfMarketableSecuritiesExplanatoryTextBlock
189	Statement [Table]	Table	*	*	ptm:StatementTable
190	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
191	Entity [Domain]	Member			dei:EntityDomain
192	Statement [Line Items]	LineItems			ptm:StatementLineItems
193	MARKETABLE SECURITIES [Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfMarketableSecuritiesExplanatoryTextBlock
194	110 - Disclosure - PROPERTY, PLANT AND EQUIPMENT	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfPropertyPlantAndEquipmentExplanatoryTextBlock
195	Statement [Table]	Table	*	*	ptm:StatementTable
196	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
197	Entity [Domain]	Member			dei:EntityDomain
198	Statement [Line Items]	LineItems			ptm:StatementLineItems
199	PROPERTY, PLANT AND EQUIPMENT [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
200	111 - Disclosure - ASSET HELD FOR SALE	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatoryTextBlock
201	Statement [Table]	Table	*	*	ptm:StatementTable
202	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
203	Entity [Domain]	Member			dei:EntityDomain
204	Statement [Line Items]	LineItems			ptm:StatementLineItems
205	ASSET HELD FOR SALE [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory
206	112 - Disclosure - EXPLORATION AND EVALUATION ASSETS	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfExplorationAndEvaluationAssetsExplanatoryTextBlock
207	Statement [Table]	Table	*	*	ptm:StatementTable
208	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
209	Entity [Domain]	Member			dei:EntityDomain
210	Statement [Line Items]	LineItems			ptm:StatementLineItems
211	EXPLORATION AND EVALUATION ASSETS [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfExplorationAndEvaluationAssetsExplanatory
212	113 - Disclosure - LOANS PAYABLE	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfTradeAndOtherPayablesExplanatoryTextBlock
213	Statement [Table]	Table	*	*	ptm:StatementTable
214	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
215	Entity [Domain]	Member			dei:EntityDomain
216	Statement [Line Items]	LineItems			ptm:StatementLineItems
217	LOANS PAYABLE [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
218	114 - Disclosure - CONVERTIBLE NOTES	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfBorrowingsExplanatoryTextBlock
219	Statement [Table]	Table	*	*	ptm:StatementTable
220	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
221	Entity [Domain]	Member			dei:EntityDomain
222	Statement [Line Items]	LineItems			ptm:StatementLineItems
223	CONVERTIBLE NOTES [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfBorrowingsExplanatory
224	115 - Disclosure - SHARE CAPITAL	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfIssuedCapitalExplanatoryTextBlock
225	Statement [Table]	Table	*	*	ptm:StatementTable
226	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
227	Entity [Domain]	Member			dei:EntityDomain
228	Statement [Line Items]	LineItems			ptm:StatementLineItems
229	SHARE CAPITAL [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIssuedCapitalExplanatory
230	116 - Disclosure - WARRANT DERIVATIVE	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfWarrantDerivativeExplanatoryTextBlock
231	Statement [Table]	Table	*	*	ptm:StatementTable
232	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
233	Entity [Domain]	Member			dei:EntityDomain
234	Statement [Line Items]	LineItems			ptm:StatementLineItems
235	WARRANT DERIVATIVE [Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfWarrantDerivativeExplanatoryTextBlock
236	117 - Disclosure - NON-CONTROLLING INTEREST	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfNoncontrollingInterestsExplanatoryTextBlock
237	Statement [Table]	Table	*	*	ptm:StatementTable
238	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
239	Entity [Domain]	Member			dei:EntityDomain
240	Statement [Line Items]	LineItems			ptm:StatementLineItems
241	NON-CONTROLLING INTEREST [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNoncontrollingInterestsExplanatory
242	118 - Disclosure - RELATED PARTY TRANSACTIONS	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfRelatedPartyExplanatoryTextBlock
243	Statement [Table]	Table	*	*	ptm:StatementTable
244	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
245	Entity [Domain]	Member			dei:EntityDomain
246	Statement [Line Items]	LineItems			ptm:StatementLineItems
247	RELATED PARTY TRANSACTIONS [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRelatedPartyExplanatory
248	119 - Disclosure - CONTINGENCIES AND COMMITMENTS	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfCommitmentsAndContingentLiabilitiesExplanatoryTextBlock
249	Statement [Table]	Table	*	*	ptm:StatementTable
250	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
251	Entity [Domain]	Member			dei:EntityDomain
252	Statement [Line Items]	LineItems			ptm:StatementLineItems
253	CONTINGENCIES AND COMMITMENTS [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
254	120 - Disclosure - SUPPLEMENTARY CASH FLOW INFORMATION	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfCashFlowStatementExplanatoryTextBlock
255	Statement [Table]	Table	*	*	ptm:StatementTable
256	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
257	Entity [Domain]	Member			dei:EntityDomain
258	Statement [Line Items]	LineItems			ptm:StatementLineItems
259	SUPPLEMENTARY CASH FLOW INFORMATION [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCashFlowStatementExplanatory
260	121 - Disclosure - SEGMENTED REPORTING	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfEntitysReportableSegmentsExplanatoryTextBlock
261	Statement [Table]	Table	*	*	ptm:StatementTable
262	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
263	Entity [Domain]	Member			dei:EntityDomain
264	Statement [Line Items]	LineItems			ptm:StatementLineItems
265	SEGMENTED REPORTING [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
266	122 - Disclosure - GENERAL AND ADMINISTRATIVE EXPENSES	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfGeneralAndAdministrativeExpenseExplanatoryTextBlock
267	Statement [Table]	Table	*	*	ptm:StatementTable
268	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
269	Entity [Domain]	Member			dei:EntityDomain
270	Statement [Line Items]	LineItems			ptm:StatementLineItems
271	GENERAL AND ADMINISTRATIVE EXPENSES [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfGeneralAndAdministrativeExpenseExplanatory
272	123 - Disclosure - CAPITAL RISK MANAGEMENT	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatoryTextBlock
273	Statement [Table]	Table	*	*	ptm:StatementTable
274	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
275	Entity [Domain]	Member			dei:EntityDomain
276	Statement [Line Items]	LineItems			ptm:StatementLineItems
277	CAPITAL RISK MANAGEMENT [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory
278	124 - Disclosure - FINANCIAL INSTRUMENTS AND RISK MANAGEMENT	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfFairValueOfFinancialInstrumentsExplanatoryTextBlock
279	Statement [Table]	Table	*	*	ptm:StatementTable
280	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
281	Entity [Domain]	Member			dei:EntityDomain
282	Statement [Line Items]	LineItems			ptm:StatementLineItems
283	FINANCIAL INSTRUMENTS AND RISK MANAGEMENT [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFairValueOfFinancialInstrumentsExplanatory
284	125 - Disclosure - INCOME TAXES	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfIncomeTaxExplanatoryTextBlock
285	Statement [Table]	Table	*	*	ptm:StatementTable
286	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
287	Entity [Domain]	Member			dei:EntityDomain
288	Statement [Line Items]	LineItems			ptm:StatementLineItems
289	INCOME TAXES [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIncomeTaxExplanatory
290	126 - Disclosure - SUBSEQUENT EVENTS	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfEventsAfterReportingPeriodExplanatoryTextBlock
291	Statement [Table]	Table	*	*	ptm:StatementTable
292	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
293	Entity [Domain]	Member			dei:EntityDomain
294	Statement [Line Items]	LineItems			ptm:StatementLineItems
295	SUBSEQUENT EVENTS [Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
296	127 - Disclosure - Summary of Significant Accounting Policies (Policies)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlockPolicies
297	Statement [Table]	Table	*	*	ptm:StatementTable
298	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
299	Entity [Domain]	Member			dei:EntityDomain
300	Statement [Line Items]	LineItems			ptm:StatementLineItems
301	Consolidation [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory
302	Translation of foreign currencies [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
303	Change in ownership interests [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForTransactionsWithNoncontrollingInterestsExplanatory
304	Cash and cash equivalents [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
305	Marketable Securities [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForAvailableforsaleFinancialAssetsExplanatory
306	Exploration and evaluation assets [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForExplorationAndEvaluationExpenditures
307	Property, plant and equipment [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
308	Asset Held for Sale [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory
309	Impairment [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
310	Trade payables [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory
311	Asset retirement obligations [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForDecommissioningRestorationAndRehabilitationProvisionsExplanatory
312	Convertible Notes [Policy Text Block]	Concept (Text Block (HTML))	For Period		ptm:DescriptionOfAccountingPolicyForConvertibleNotesExplanatoryPolicyTextBlock
313	Warrants [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForWarrantsExplanatory
314	Share Capital [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
315	Stock-based compensation [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
316	Income taxes [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
317	Loss per common share [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
318	Financial instruments [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory
319	Future accounting changes [Policy Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfOtherAccountingPoliciesRelevantToUnderstandingOfFinancialStatements
320	128 - Disclosure - NATURE OF OPERATIONS AND GOING CONCERN (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfNatureOfOperationsExplanatoryTextBlockTables
321	Statement [Table]	Table	*	*	ptm:StatementTable
322	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
323	Entity [Domain]	Member			dei:EntityDomain
324	Statement [Line Items]	LineItems			ptm:StatementLineItems
325	Disclosure of subsidiaries [Table Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
326	129 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfSummaryOfSignificantAccountingPoliciesExplanatoryTextBlockTables
327	Statement [Table]	Table	*	*	ptm:StatementTable
328	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
329	Entity [Domain]	Member			dei:EntityDomain
330	Statement [Line Items]	LineItems			ptm:StatementLineItems
331	Disclosure of detailed information about foreign exchange rates used [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutForeignExchangeRatesUsedExplanatoryTableTextBlock
332	Disclosure of detailed information about estimated useful lives of property, plant and equipment [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutEstimatedUsefulLivesOfPropertyPlantAndEquipmentTableTextBlock
333	130 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfPropertyPlantAndEquipmentExplanatoryTextBlockTables
334	Statement [Table]	Table	*	*	ptm:StatementTable
335	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
336	Entity [Domain]	Member			dei:EntityDomain
337	Statement [Line Items]	LineItems			ptm:StatementLineItems
338	Disclosure of detailed information about property, plant and equipment [text block] [Table Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
339	131 - Disclosure - ASSET HELD FOR SALE (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatoryTextBlockTables
340	Statement [Table]	Table	*	*	ptm:StatementTable
341	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
342	Entity [Domain]	Member			dei:EntityDomain
343	Statement [Line Items]	LineItems			ptm:StatementLineItems
344	Disclosure of detailed information about assets held for sale [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutAssetsHeldForSaleTableTextBlock
345	132 - Disclosure - EXPLORATION AND EVALUATION ASSETS (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfExplorationAndEvaluationAssetsExplanatoryTextBlockTables
346	Statement [Table]	Table	*	*	ptm:StatementTable
347	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
348	Entity [Domain]	Member			dei:EntityDomain
349	Statement [Line Items]	LineItems			ptm:StatementLineItems
350	Disclosure of detailed information about exploration and evaluation assets explanatory [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutExplorationAndEvaluationAssetsExplanatoryTableTextBlock
351	133 - Disclosure - LOANS PAYABLE (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfTradeAndOtherPayablesExplanatoryTextBlockTables
352	Statement [Table]	Table	*	*	ptm:StatementTable
353	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
354	Entity [Domain]	Member			dei:EntityDomain
355	Statement [Line Items]	LineItems			ptm:StatementLineItems
356	Disclosure of detailed information about loans payable explanatory [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutLoansPayableExplanatoryTableTextBlock
357	Disclosure of detailed information about brokerage fees explanatory [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutBrokerageFeesExplanatoryTableTextBlock
358	134 - Disclosure - CONVERTIBLE NOTES (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfBorrowingsExplanatoryTextBlockTables
359	Statement [Table]	Table	*	*	ptm:StatementTable
360	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
361	Entity [Domain]	Member			dei:EntityDomain
362	Statement [Line Items]	LineItems			ptm:StatementLineItems
363	Disclosure of detailed information about borrowings [text block] [Table Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
364	Disclosure of detailed information about valuation assumptions for embedded derivatives [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutValuationAssumptionsForEmbeddedDerivativesTableTextBlock
365	135 - Disclosure - SHARE CAPITAL (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfIssuedCapitalExplanatoryTextBlockTables
366	Statement [Table]	Table	*	*	ptm:StatementTable
367	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
368	Entity [Domain]	Member			dei:EntityDomain
369	Statement [Line Items]	LineItems			ptm:StatementLineItems
370	Disclosure of number and weighted average exercise prices of share options [text block] [Table Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory
371	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
372	136 - Disclosure - NON-CONTROLLING INTEREST (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfNoncontrollingInterestsExplanatoryTextBlockTables
373	Statement [Table]	Table	*	*	ptm:StatementTable
374	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
375	Entity [Domain]	Member			dei:EntityDomain
376	Statement [Line Items]	LineItems			ptm:StatementLineItems
377	Disclosure of detailed information about non-controlling interests explanatory [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutNoncontrollingInterestsExplanatoryTableTextBlock
378	137 - Disclosure - RELATED PARTY TRANSACTIONS (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfRelatedPartyExplanatoryTextBlockTables
379	Statement [Table]	Table	*	*	ptm:StatementTable
380	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
381	Entity [Domain]	Member			dei:EntityDomain
382	Statement [Line Items]	LineItems			ptm:StatementLineItems
383	Disclosure of information about key management personnel [Table Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory
384	138 - Disclosure - CONTINGENCIES AND COMMITMENTS (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfCommitmentsAndContingentLiabilitiesExplanatoryTextBlockTables
385	Statement [Table]	Table	*	*	ptm:StatementTable
386	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
387	Entity [Domain]	Member			dei:EntityDomain
388	Statement [Line Items]	LineItems			ptm:StatementLineItems
389	Disclosure of detailed information about commitments [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutCommitmentsExplanatory
390	139 - Disclosure - SUPPLEMENTARY CASH FLOW INFORMATION (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfCashFlowStatementExplanatoryTextBlockTables
391	Statement [Table]	Table	*	*	ptm:StatementTable
392	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
393	Entity [Domain]	Member			dei:EntityDomain
394	Statement [Line Items]	LineItems			ptm:StatementLineItems
395	Disclosure of detailed information about non-cash working capital [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutNoncashWorkingCapitalTableTextBlock
396	140 - Disclosure - SEGMENTED REPORTING (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfEntitysReportableSegmentsExplanatoryTextBlockTables
397	Statement [Table]	Table	*	*	ptm:StatementTable
398	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
399	Entity [Domain]	Member			dei:EntityDomain
400	Statement [Line Items]	LineItems			ptm:StatementLineItems
401	Disclosure of operating segments [Table Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOperatingSegmentsExplanatory
402	141 - Disclosure - GENERAL AND ADMINISTRATIVE EXPENSES (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfGeneralAndAdministrativeExpenseExplanatoryTextBlockTables
403	Statement [Table]	Table	*	*	ptm:StatementTable
404	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
405	Entity [Domain]	Member			dei:EntityDomain
406	Statement [Line Items]	LineItems			ptm:StatementLineItems
407	Disclosure of detailed information about general and administrative expenses explanatory [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutGeneralAndAdministrativeExpensesExplanatoryTableTextBlock
408	142 - Disclosure - FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfFairValueOfFinancialInstrumentsExplanatoryTextBlockTables
409	Statement [Table]	Table	*	*	ptm:StatementTable
410	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
411	Entity [Domain]	Member			dei:EntityDomain
412	Statement [Line Items]	LineItems			ptm:StatementLineItems
413	Disclosure of foreign currency risk explanatory [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfForeignCurrencyRiskExplanatoryTableTextBlock
414	143 - Disclosure - INCOME TAXES (Tables)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/NotesToFinancialStatementsDisclosureOfIncomeTaxExplanatoryTextBlockTables
415	Statement [Table]	Table	*	*	ptm:StatementTable
416	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
417	Entity [Domain]	Member			dei:EntityDomain
418	Statement [Line Items]	LineItems			ptm:StatementLineItems
419	Disclosure of detailed information about effective income tax expense recovery [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfDetailedInformationAboutEffectiveIncomeTaxExpenseRecoveryExplanatory
420	Disclosure of deferred taxes [Table Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDeferredTaxesExplanatory
421	Disclosure of changes in deferred tax assets and liabilities explanatory [Table Text Block]	Concept (Text Block (HTML))	For Period		ptm:DisclosureOfChangesInDeferredTaxAssetsAndLiabilitiesExplanatoryTableTextBlock
422	Disclosure of temporary difference, unused tax losses and unused tax credits [Table Text Block]	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
423	144 - Disclosure - NATURE OF OPERATIONS AND GOING CONCERN (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfNatureOfOperationsExplanatoryDetails
424	Statement [Table]	Table	*	*	ptm:StatementTable
425	Types of investment property [Axis]	Axis			ifrs-full:TypesOfInvestmentPropertyAxis
426	Mining property [Domain]	Member			ifrs-full:MiningPropertyMember
427	Waterberg Project [Member]	Member			ptm:WaterbergProjectMember
428	Subsidiaries [Axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
429	Entity's total for subsidiaries [Domain]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
430	Implats [Member]	Member			ptm:ImplatsMember
431	Maseve Investments 11 (Pty) Ltd. [Member]	Member			ptm:MaseveInvestmentsOneOnePtyLtdMember
432	Non-adjusting events after reporting period [Axis]	Axis			ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
433	Subsequent events [Domain]	Member			ptm:SubsequentEventsDomain
434	Borrowings by name [Axis]	Axis			ifrs-full:BorrowingsByNameAxis
435	Borrowings by name [Domain]	Member			ifrs-full:BorrowingsByNameMember
436	LMM Facility [Member]	Member			ptm:LmmFacilityLoanMember
437	Scenario [Axis]	Axis			ptm:ScenarioAxis
438	Scenario unspecified [Domain]	Member			ptm:ScenarioUnspecifiedDomain
439	Approximations [Member]	Member			ptm:ApproximationsMember
440	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
441	Entity [Domain]	Member			dei:EntityDomain
442	Statement [Line Items]	LineItems			ptm:StatementLineItems
443	Proportion of ownership interest	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
444	Loss for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
445	Negative equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
446	Borrowings	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
447	Proceeds from sale of interests	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromSalesOfInvestmentProperty
448	Decrease in proportion of ownership, interest sold	Concept (Percent)	For Period		ptm:DecreaseInProportionOfOwnershipInterestSold
449	Units issued - financing (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughUnitsIssuedFinancingShares
450	Proceeds from units issued	Concept (Monetary)	For Period	Debit	ptm:ProceedsFromUnitsIssued
451	145 - Disclosure - SIGNIFICANT ACCOUNTING JUDGEMENTS AND ESTIMATES (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfAccountingJudgementsAndEstimatesExplanatoryDetails
452	Statement [Table]	Table	*	*	ptm:StatementTable
453	Subsidiaries [Axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
454	Entity's total for subsidiaries [Domain]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
455	Mnombo Wethu Consultants (Pty) Limited [Member]	Member			ptm:MnomboMember
456	RBPlats [Member]	Member			ptm:RBPlatsMember
457	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
458	Entity [Domain]	Member			dei:EntityDomain
459	Statement [Line Items]	LineItems			ptm:StatementLineItems
460	Proportion of ownership interest	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
461	Proportion of ownership and voting rights held by non-controlling interests	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
462	146 - Disclosure - MARKETABLE SECURITIES (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfMarketableSecuritiesExplanatoryTextBlockDetails
463	Statement [Table]	Table	*	*	ptm:StatementTable
464	Subsidiaries [Axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
465	Entity's total for subsidiaries [Domain]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
466	RBPlats [Member]	Member			ptm:RBPlatsMember
467	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
468	Entity [Domain]	Member			dei:EntityDomain
469	Statement [Line Items]	LineItems			ptm:StatementLineItems
470	Number of equity instruments received	Concept (Shares)	For Period		ptm:NumberOfEquityInstrumentsReceived
471	Loss on fair value of marketable securities	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnAvailableforsaleFinancialAssets
472	147 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfPropertyPlantAndEquipmentExplanatoryDetails
473	Statement [Table]	Table	*	*	ptm:StatementTable
474	Types of investment property [Axis]	Axis			ifrs-full:TypesOfInvestmentPropertyAxis
475	Mining property [Domain]	Member			ifrs-full:MiningPropertyMember
476	Classes of property, plant and equipment [Axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
477	Property, plant and equipment [Domain]	Member			ifrs-full:PropertyPlantAndEquipmentMember
478	Classification of assets as held for sale [Member]	Member			ifrs-full:ClassificationOfAssetsAsHeldForSaleMember
479	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [Axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
480	Carrying amount [Domain]	Member			ifrs-full:CarryingAmountMember
481	Accumulated impairment [Member]	Member			ifrs-full:AccumulatedImpairmentMember
482	Subsidiaries [Axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
483	Entity's total for subsidiaries [Domain]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
484	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
485	Entity [Domain]	Member			dei:EntityDomain
486	Statement [Line Items]	LineItems			ptm:StatementLineItems
487	Pre-production revenue	Concept (Monetary)	For Period	Credit	ifrs-full:OtherRevenue
488	Interest costs capitalised	Concept (Monetary)	For Period		ifrs-full:InterestCostsCapitalised
489	Property, plant and equipment	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
490	148 - Disclosure - ASSET HELD FOR SALE (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatoryDetails
491	Statement [Table]	Table	*	*	ptm:StatementTable
492	Classes of property, plant and equipment [Axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
493	Property, plant and equipment [Domain]	Member			ifrs-full:PropertyPlantAndEquipmentMember
494	Classification of assets as held for sale [Member]	Member			ifrs-full:ClassificationOfAssetsAsHeldForSaleMember
495	Borrowings by name [Axis]	Axis			ifrs-full:BorrowingsByNameAxis
496	Borrowings by name [Domain]	Member			ifrs-full:BorrowingsByNameMember
497	Sprott Facility [Member]	Member			ptm:SprottFacilityLoanMember
498	LMM Facility [Member]	Member			ptm:LmmFacilityLoanMember
499	Sprott Facility and LMM Facility [Member]	Member			ptm:SprottFacilityAndLmmFacilityMember
500	Disposal of Assets Held for Sale [Axis]	Axis			ptm:DisposalOfAssetsHeldForSaleAxis
501	Disposal of Assets Held for Sale [Domain]	Member			ptm:DisposalOfAssetsHeldForSaleDomain
502	Stage One [Member]	Member			ptm:StageOneMember
503	Stage Two [Member]	Member			ptm:StageTwoMember
504	Subsidiaries [Axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
505	Entity's total for subsidiaries [Domain]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
506	RBPlats [Member]	Member			ptm:RBPlatsMember
507	Maseve Investments 11 (Pty) Ltd. [Member]	Member			ptm:MaseveInvestmentsOneOnePtyLtdMember
508	Scenario [Axis]	Axis			ptm:ScenarioAxis
509	Scenario unspecified [Domain]	Member			ptm:ScenarioUnspecifiedDomain
510	Approximations [Member]	Member			ptm:ApproximationsMember
511	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
512	Entity [Domain]	Member			dei:EntityDomain
513	Statement [Line Items]	LineItems			ptm:StatementLineItems
514	Asset held for sale	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentAssets
515	Total consideration for assets held for sale	Concept (Monetary)	As Of	Debit	ptm:TotalConsiderationForAssetsHeldForSale
516	Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations
517	Consideration for loans held, shares	Concept (Monetary)	For Period	Debit	ptm:ConsiderationForLoansHeldShares
518	Consideration for assets held for sale, shares	Concept (Monetary)	For Period	Debit	ptm:ConsiderationForAssetsHeldForSaleShares
519	Payments for outstanding contractor claims	Concept (Monetary)	For Period	Credit	ptm:PaymentsForOutstandingContractorClaims
520	Repayments of non-current borrowings	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfNoncurrentBorrowings
521	Environmental bond	Concept (Monetary)	As Of	Debit	ptm:EnvironmentalBond
522	Shares released from escrow	Concept (Shares)	For Period		ptm:SharesReleasedFromEscrow
523	Shares released from escrow, value	Concept (Monetary)	For Period	Credit	ptm:SharesReleasedFromEscrowValue
524	Number of equity instruments received	Concept (Shares)	For Period		ptm:NumberOfEquityInstrumentsReceived
525	Loss on fair value of marketable securities	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnAvailableforsaleFinancialAssets
526	Marketable Securities	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentFinancialAssetsAvailableforsale
527	Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
528	149 - Disclosure - EXPLORATION AND EVALUATION ASSETS (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfExplorationAndEvaluationAssetsExplanatoryDetails
529	Statement [Table]	Table	*	*	ptm:StatementTable
530	Subsidiaries [Axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
531	Entity's total for subsidiaries [Domain]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
532	JOGMEC [Member]	Member			ptm:JogmecMember
533	Mnombo Wethu Consultants (Pty) Limited [Member]	Member			ptm:MnomboMember
534	Implats [Member]	Member			ptm:ImplatsMember
535	Waterberg JV Co. [Member]	Member			ptm:WaterbergJvCoMember
536	Components of exploration and evaluation assets [Axis]	Axis			ptm:ComponentsOfExplorationAndEvaluationAssetsAxis
537	Exploration and evaluation assets [Domain]	Member			ifrs-full:ExplorationAndEvaluationAssetsMember
538	Purchase and Development Option [Member]	Member			ptm:PurchaseAndDevelopmentOptionMember
539	Types of investment property [Axis]	Axis			ifrs-full:TypesOfInvestmentPropertyAxis
540	Mining property [Domain]	Member			ifrs-full:MiningPropertyMember
541	Waterberg Project [Member]	Member			ptm:WaterbergProjectMember
542	Scenario [Axis]	Axis			ptm:ScenarioAxis
543	Scenario unspecified [Domain]	Member			ptm:ScenarioUnspecifiedDomain
544	Approximations [Member]	Member			ptm:ApproximationsMember
545	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
546	Entity [Domain]	Member			dei:EntityDomain
547	Statement [Line Items]	LineItems			ptm:StatementLineItems
548	Proportion of ownership interest	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
549	Proportion of ownership and voting rights held by non-controlling interests	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
550	Proportion of ownership, purchase agreement amount	Concept (Percent)	For Period		ptm:ProportionOfOwnershipPurchaseAgreementAmount
551	Purchase agreement amount	Concept (Monetary)	For Period	Credit	ptm:PurchaseAgreementAmount
552	Decrease in proportion of ownership, interest sold	Concept (Percent)	For Period		ptm:DecreaseInProportionOfOwnershipInterestSold
553	Amount committed towards pro rata share of remaining DFS costs	Concept (Monetary)	For Period	Credit	ptm:AmountCommittedTowardsProRataShareOfRemainingDFSCosts
554	Restricted Cash - Waterberg	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentRestrictedCashAndCashEquivalents
555	Effective proportion of ownership interest in subsidiary	Concept (Percent)	For Period		ptm:EffectiveProportionOfOwnershipInterestInSubsidiary
556	Acquisition of interest, work requirement	Concept (Monetary)	For Period	Credit	ptm:AcquisitionOfInterestWorkRequirement
557	Acquisition of interest, work requirement, interest	Concept (Percent)	For Period		ptm:AcquisitionOfInterestWorkRequirementInterest
558	Expense arising from exploration and evaluation of mineral resources	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
559	Expenses arising from exploration and evaluation of mineral resources owed to the company	Concept (Monetary)	As Of	Debit	ptm:ExpensesArisingFromExplorationAndEvaluationOfMineralResourcesOwedToTheCompany
560	Non-controlling interest	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
561	Capital commitments	Concept (Monetary)	As Of	Credit	ifrs-full:CapitalCommitments
562	Proceeds from funds advanced for exploration and evaluation expenses	Concept (Monetary)	For Period	Debit	ptm:ProceedsFromFundsAdvancedForExplorationAndEvaluationExpenses
563	Payments for exploration and evaluation expenses	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsForExplorationAndEvaluationExpenses
564	150 - Disclosure - LOANS PAYABLE (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfTradeAndOtherPayablesExplanatoryDetails
565	Statement [Table]	Table	*	*	ptm:StatementTable
566	Borrowings by name [Axis]	Axis			ifrs-full:BorrowingsByNameAxis
567	Borrowings by name [Domain]	Member			ifrs-full:BorrowingsByNameMember
568	Sprott Facility and LMM Facility [Member]	Member			ptm:SprottFacilityAndLmmFacilityMember
569	Sprott Facility [Member]	Member			ptm:SprottFacilityLoanMember
570	Sprott Facility - Third Advance [Member]	Member			ptm:SprottFacilityThirdAdvanceMember
571	Sprott Facility - Fourth Advance [Member]	Member			ptm:SprottFacilityFourthAdvanceMember
572	LMM Facility [Member]	Member			ptm:LmmFacilityLoanMember
573	Non-adjusting events after reporting period [Axis]	Axis			ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
574	Subsequent events [Domain]	Member			ptm:SubsequentEventsDomain
575	Non-adjusting events after reporting period [Member]	Member			ifrs-full:NonadjustingEventsMember
576	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
577	Entity [Domain]	Member			dei:EntityDomain
578	Statement [Line Items]	LineItems			ptm:StatementLineItems
579	Interest costs capitalised	Concept (Monetary)	For Period		ifrs-full:InterestCostsCapitalised
580	Interest expense on borrowings	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpenseOnBorrowings
581	Borrowings	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
582	Proceeds from non-current borrowings	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromNoncurrentBorrowings
583	Repayments of non-current borrowings	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfNoncurrentBorrowings
584	Borrowings, interest rate basis	Concept (Text/String)	For Period		ifrs-full:BorrowingsInterestRateBasis
585	Repayments of non-current borrowings and production payment termination accrual	Concept (Monetary)	For Period	Credit	ptm:RepaymentsOfNonCurrentBorrowingsAndProductionPaymentTerminationAccrual
586	Payments of production payment termination accrual	Concept (Monetary)	For Period	Credit	ptm:PaymentsOfProductionPaymentTerminationAccrual
587	Production Payment liability	Concept (Monetary)	As Of	Credit	ptm:ProductionPaymentLiability
588	Borrowings, interest rate	Concept (Percent)	As Of		ifrs-full:BorrowingsInterestRate
589	Required financing	Concept (Monetary)	As Of	Credit	ptm:RequiredFinancing
590	Required financing to reduce indebtedness	Concept (Monetary)	As Of	Credit	ptm:RequiredFinancingToReduceIndebtedness
591	Proceeds from issuance of equity	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromIssuingShares
592	151 - Disclosure - CONVERTIBLE NOTES (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfBorrowingsExplanatoryDetails
593	Statement [Table]	Table	*	*	ptm:StatementTable
594	Borrowings by name [Axis]	Axis			ifrs-full:BorrowingsByNameAxis
595	Borrowings by name [Domain]	Member			ifrs-full:BorrowingsByNameMember
596	Convertible Notes [Member]	Member			ptm:ConvertibleNotesMember
597	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
598	Entity [Domain]	Member			dei:EntityDomain
599	Statement [Line Items]	LineItems			ptm:StatementLineItems
600	Borrowings	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
601	Borrowings, interest rate	Concept (Percent)	As Of		ifrs-full:BorrowingsInterestRate
602	Borrowings, adjustment to interest rate basis	Concept (Percent)	As Of		ifrs-full:BorrowingsAdjustmentToInterestRateBasis
603	Description of conversion of debt to equity	Concept (Text/String)	For Period		ifrs-full:DescriptionOfConversionOfDebtToEquity
604	Convertible Note Derivatives	Concept (Monetary)	As Of	Credit	ifrs-full:DerivativeFinancialLiabilities
605	Transaction costs	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsForDebtIssueCosts
606	Value attributed to debt portion of convertible notes	Concept (Monetary)	As Of	Credit	ptm:ValueAttributedToDebtPortionOfConvertibleNotes
607	Borrowings converted	Concept (Monetary)	For Period	Debit	ptm:BorrowingsConverted
608	Shares issued on conversion of convertible note	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughConversionOfConvertibleInstrumentsShares
609	Shares issued for interest on convertible note (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughSharesIssuedForInterestOnConvertibleNoteShares
610	Shares issued for interest on convertible note	Concept (Monetary)	For Period	Credit	ptm:IncreaseDecreaseThroughSharesIssuedForInterestOnConvertibleNote
611	Gain on warrant derivative	Concept (Monetary)	For Period	Credit	ptm:GainOnWarrantDerivative
612	Gain of fair value of financial instruments	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
613	152 - Disclosure - SHARE CAPITAL (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfIssuedCapitalExplanatoryDetails
614	Statement [Table]	Table	*	*	ptm:StatementTable
615	Types of share-based payment arrangements [Axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
616	Share-based payment arrangements [Domain]	Member			ifrs-full:SharebasedPaymentArrangementsMember
617	Capitalized to mineral properties [Member]	Member			ptm:CapitalizedToMineralPropertiesMember
618	Capitalized to property plant and equipment [Member]	Member			ptm:CapitalizedToPropertyPlantAndEquipmentMember
619	Expensed [Member]	Member			ptm:ExpensedMember
620	Borrowings by name [Axis]	Axis			ifrs-full:BorrowingsByNameAxis
621	Borrowings by name [Domain]	Member			ifrs-full:BorrowingsByNameMember
622	Convertible Notes [Member]	Member			ptm:ConvertibleNotesMember
623	Sprott Facility [Member]	Member			ptm:SprottFacilityLoanMember
624	Sprott Facility - Second Advance [Member]	Member			ptm:SprottFacilitySecondAdvanceMember
625	LMM Facility [Member]	Member			ptm:LmmFacilityLoanMember
626	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
627	Entity [Domain]	Member			dei:EntityDomain
628	Statement [Line Items]	LineItems			ptm:StatementLineItems
629	Number of shares outstanding	Concept (Shares)	As Of		ifrs-full:NumberOfSharesOutstanding
630	Units issued - financing (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughUnitsIssuedFinancingShares
631	Units issued, price per unit	Concept (Monetary)	For Period	Credit	ptm:UnitsIssuedPricePerUnit
632	Proceeds from units issued	Concept (Monetary)	For Period	Debit	ptm:ProceedsFromUnitsIssued
633	Weighted average exercise price of warrants granted in share-based payment arrangement	Concept (Monetary)	For Period	Credit	ptm:WeightedAverageExercisePriceOfWarrantsGrantedInSharebasedPaymentArrangement
634	Unit issuance costs	Concept (Monetary)	For Period	Debit	ptm:UnitIssueRelatedCost
635	Shares issued for interest on convertible note (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughSharesIssuedForInterestOnConvertibleNoteShares
636	Shares issued for interest on convertible note	Concept (Monetary)	For Period	Credit	ptm:IncreaseDecreaseThroughSharesIssuedForInterestOnConvertibleNote
637	Borrowings	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
638	Increase (decrease) in number of shares outstanding	Concept (Shares)	For Period		ifrs-full:IncreaseDecreaseInNumberOfSharesOutstanding
639	Issue of equity	Concept (Monetary)	For Period	Credit	ifrs-full:IssueOfEquity
640	Equity Issuance, Price per Share	Concept (Share)	For Period		ptm:EquityIssuancePricePerShare
641	Payments for share issue costs	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsForShareIssueCosts
642	Gross proceeds from issuing shares	Concept (Monetary)	For Period	Debit	ptm:GrossProceedsFromIssuingShares
643	Proceeds from issuance of equity	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromIssuingShares
644	Shares issued on conversion of convertible note (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughConversionOfConvertibleInstrumentsShares
645	Shares issued on conversion of convertible note	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughConversionOfConvertibleInstruments
646	Number of share options granted in share-based payment arrangement	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
647	Share based compensation	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
648	153 - Disclosure - WARRANT DERIVATIVE (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfWarrantDerivativeExplanatoryTextBlockDetails
649	Statement [Table]	Table	*	*	ptm:StatementTable
650	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
651	Entity [Domain]	Member			dei:EntityDomain
652	Statement [Line Items]	LineItems			ptm:StatementLineItems
653	Warrants granted, value	Concept (Monetary)	For Period	Credit	ptm:WarrantsGrantedValue
654	Unit issuance costs attributed to warrants	Concept (Monetary)	For Period	Credit	ptm:UnitIssuanceCostsAttributedToWarrants
655	Warrants, market price	Concept (Monetary)	As Of	Credit	ptm:WarrantsMarketPrice
656	Warrants outstanding, value	Concept (Monetary)	For Period	Credit	ptm:WarrantsOutstandingValue
657	Gain on warrant derivative	Concept (Monetary)	For Period	Credit	ptm:GainOnWarrantDerivative
658	Gain of fair value of financial instruments	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
659	154 - Disclosure - RELATED PARTY TRANSACTIONS (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfRelatedPartyExplanatoryDetails
660	Statement [Table]	Table	*	*	ptm:StatementTable
661	Categories of related parties [Axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
662	Related parties [Domain]	Member			ifrs-full:RelatedPartiesMember
663	West Kirkland Mining Inc [Member]	Member			ptm:WestKirklandMiningIncMember
664	Hosken Consolidated Investments Limited [Member]	Member			ptm:HoskenConsolidatedInvestmentsLimitedMember
665	Hosken Consolidated Investments Limited - additional transaction [Member]	Member			ptm:HoskenConsolidatedInvestmentsLimitedAdditionalTransactionMember
666	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
667	Entity [Domain]	Member			dei:EntityDomain
668	Statement [Line Items]	LineItems			ptm:StatementLineItems
669	Director remuneration expense	Concept (Monetary)	For Period	Debit	ifrs-full:DirectorsRemunerationExpense
670	Revenue from rendering of services, related party transactions	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromRenderingOfServicesRelatedPartyTransactions
671	Amounts receivable, related party transactions	Concept (Monetary)	As Of	Debit	ifrs-full:AmountsReceivableRelatedPartyTransactions
672	Units issued - financing (Shares)	Concept (Shares)	For Period		ptm:IncreaseDecreaseThroughUnitsIssuedFinancingShares
673	Description of nature of related party relationship	Concept (Text/String)	For Period		ifrs-full:DescriptionOfNatureOfRelatedPartyRelationship
674	155 - Disclosure - CONTINGENCIES AND COMMITMENTS (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfCommitmentsAndContingentLiabilitiesExplanatoryDetails
675	Statement [Table]	Table	*	*	ptm:StatementTable
676	Subsidiaries [Axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
677	Entity's total for subsidiaries [Domain]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
678	Maseve Investments 11 (Pty) Ltd. [Member]	Member			ptm:MaseveInvestmentsOneOnePtyLtdMember
679	Commitments [Axis]	Axis			ptm:CommitmentsAxis
680	Commitments [Domain]	Member			ptm:CommitmentsDomain
681	Scenario [Axis]	Axis			ptm:ScenarioAxis
682	Scenario unspecified [Domain]	Member			ptm:ScenarioUnspecifiedDomain
683	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
684	Entity [Domain]	Member			dei:EntityDomain
685	Statement [Line Items]	LineItems			ptm:StatementLineItems
686	Minimum operating lease payments recognised as expense	Concept (Monetary)	For Period	Debit	ifrs-full:MinimumOperatingLeasePayments
687	Proportion of ownership and voting rights held by non-controlling interests	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
688	156 - Disclosure - FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfFairValueOfFinancialInstrumentsExplanatoryDetails
689	Statement [Table]	Table	*	*	ptm:StatementTable
690	Types of risks [Axis]	Axis			ifrs-full:TypesOfRisksAxis
691	Risks [Domain]	Member			ifrs-full:TypesOfRisksMember
692	Currency risk [Member]	Member			ifrs-full:CurrencyRiskMember
693	Interest rate risk [Member]	Member			ifrs-full:InterestRateRiskMember
694	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
695	Entity [Domain]	Member			dei:EntityDomain
696	Statement [Line Items]	LineItems			ptm:StatementLineItems
697	Percentage of reasonably possible increase in actuarial assumption	Concept (Percent)	As Of		ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
698	Value at risk	Concept (Monetary)	As Of		ifrs-full:ValueAtRisk
699	157 - Disclosure - INCOME TAXES (Narrative) (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfIncomeTaxExplanatoryDetails
700	Statement [Table]	Table	*	*	ptm:StatementTable
701	Income tax rate jurisdiction [Axis]	Axis			ptm:IncomeTaxRateJurisdictionAxis
702	Income tax rate jurisdiction [Domain]	Member			ptm:IncomeTaxRateJurisdictionDomain
703	Types of investment property [Axis]	Axis			ifrs-full:TypesOfInvestmentPropertyAxis
704	Mining property [Domain]	Member			ifrs-full:MiningPropertyMember
705	Waterberg Project [Member]	Member			ptm:WaterbergProjectMember
706	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
707	Entity [Domain]	Member			dei:EntityDomain
708	Statement [Line Items]	LineItems			ptm:StatementLineItems
709	Deferred income tax expense (recovery)	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncome
710	159 - Disclosure - Disclosure of subsidiaries (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfSignificantInvestmentsInSubsidiariesExplanatoryDetails
711	Statement [Table]	Table	*	*	ptm:StatementTable
712	Subsidiaries [Axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
713	Entity's total for subsidiaries [Domain]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
714	Platinum Group Metals (RSA) (Pty) Ltd. [Member]	Member			ptm:PlatinumGroupMetalsRsaPtyLtdMember
715	Mnombo Wethu Consultants (Pty) Limited [Member]	Member			ptm:MnomboMember
716	Waterberg JV Co. [Member]	Member			ptm:WaterbergJvCoMember
717	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
718	Entity [Domain]	Member			dei:EntityDomain
719	Statement [Line Items]	LineItems			ptm:StatementLineItems
720	Proportion of ownership interest	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
721	160 - Disclosure - Disclosure of detailed information about foreign exchange rates used (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutForeignExchangeRatesUsedExplanatoryTableTextBlockDetails
722	Statement [Table]	Table	*	*	ptm:StatementTable
723	Currencies [Axis]	Axis			ptm:CurrenciesAxis
724	Currencies [Domain]	Member			ptm:CurrenciesDomain
725	Rand / USD [Member]	Member			ptm:RandUsdMember
726	CAD / USD [Member]	Member			ptm:CadUsdMember
727	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
728	Entity [Domain]	Member			dei:EntityDomain
729	Statement [Line Items]	LineItems			ptm:StatementLineItems
730	Year-end rate	Concept (Decimal)	As Of		ifrs-full:ClosingForeignExchangeRate
731	Year average rate	Concept (Decimal)	For Period		ifrs-full:AverageForeignExchangeRate
732	161 - Disclosure - Disclosure of detailed information about estimated useful lives of property, plant and equipment (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutEstimatedUsefulLivesOfPropertyPlantAndEquipmentTableTextBlockDetails
733	Statement [Table]	Table	*	*	ptm:StatementTable
734	Classes of property, plant and equipment [Axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
735	Property, plant and equipment [Domain]	Member			ifrs-full:PropertyPlantAndEquipmentMember
736	Development Assets [Member]	Member			ifrs-full:InvestmentPropertyUnderConstructionOrDevelopmentMember
737	Land [Member]	Member			ifrs-full:LandMember
738	Buildings [Member]	Member			ifrs-full:BuildingsMember
739	Office Equipment [Member]	Member			ifrs-full:OfficeEquipmentMember
740	Mining equipment [Member]	Member			ifrs-full:MiningAssetsMember
741	Vehicles [Member]	Member			ifrs-full:VehiclesMember
742	Computer equipment and software [Member]	Member			ifrs-full:ComputerEquipmentMember
743	Furniture and fixtures [Member]	Member			ifrs-full:FixturesAndFittingsMember
744	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
745	Entity [Domain]	Member			dei:EntityDomain
746	Statement [Line Items]	LineItems			ptm:StatementLineItems
747	Useful lives or depreciation rates, property, plant and equipment	Concept (Text/String)	For Period		ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
748	162 - Disclosure - Disclosure of detailed information about property, plant and equipment (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatoryDetails
749	Statement [Table]	Table	*	*	ptm:StatementTable
750	Classes of property, plant and equipment [Axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
751	Property, plant and equipment [Domain]	Member			ifrs-full:PropertyPlantAndEquipmentMember
752	Development Assets [Member]	Member			ifrs-full:InvestmentPropertyUnderConstructionOrDevelopmentMember
753	Land [Member]	Member			ifrs-full:LandMember
754	Buildings [Member]	Member			ifrs-full:BuildingsMember
755	Office Equipment [Member]	Member			ifrs-full:OfficeEquipmentMember
756	Mining equipment [Member]	Member			ifrs-full:MiningAssetsMember
757	Vehicles [Member]	Member			ifrs-full:VehiclesMember
758	Computer equipment and software [Member]	Member			ifrs-full:ComputerEquipmentMember
759	Furniture and fixtures [Member]	Member			ifrs-full:FixturesAndFittingsMember
760	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [Axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
761	Carrying amount [Domain]	Member			ifrs-full:CarryingAmountMember
762	COST [Member]	Member			ifrs-full:GrossCarryingAmountMember
763	ACCUMULATED DEPRECIATION [Member]	Member			ifrs-full:AccumulatedDepreciationAndAmortisationMember
764	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
765	Entity [Domain]	Member			dei:EntityDomain
766	Statement [Line Items]	LineItems			ptm:StatementLineItems
767	Property, plant and equipment at beginning of period	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
768	Additions	Concept (Monetary)	For Period	Debit	ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
769	Depreciation	Concept (Monetary)	For Period		ifrs-full:DepreciationPropertyPlantAndEquipment
770	Disposals	Concept (Monetary)	For Period	Credit	ifrs-full:DisposalsPropertyPlantAndEquipment
771	Transfer to Asset Held for Sale	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment
772	Impairment and transfer to Asset Held for Sale	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesPropertyPlantAndEquipment
773	Foreign exchange movement	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
774	Property, plant and equipment at end of period	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
775	163 - Disclosure - Disclosure of detailed information about assets held for sale (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutAssetsHeldForSaleTableTextBlockDetails
776	Statement [Table]	Table	*	*	ptm:StatementTable
777	Subsidiaries [Axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
778	Entity's total for subsidiaries [Domain]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
779	Maseve Investments 11 (Pty) Ltd. [Member]	Member			ptm:MaseveInvestmentsOneOnePtyLtdMember
780	Classes of property, plant and equipment [Axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
781	Property, plant and equipment [Domain]	Member			ifrs-full:PropertyPlantAndEquipmentMember
782	Classification of assets as held for sale [Member]	Member			ifrs-full:ClassificationOfAssetsAsHeldForSaleMember
783	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
784	Entity [Domain]	Member			dei:EntityDomain
785	Statement [Line Items]	LineItems			ptm:StatementLineItems
786	Total consideration for assets held for sale	Concept (Monetary)	As Of	Debit	ptm:TotalConsiderationForAssetsHeldForSale
787	Less: fees directly attributable to sale	Concept (Monetary)	As Of	Credit	ptm:FeesDirectlyAttributableToSaleOfDiscontinuedOperations
788	Fees paid for assets held for sale	Concept (Monetary)	As Of	Debit	ptm:FeesPaidForAssetsHeldForSale
789	Proceeds from Sale	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromDisposalOfExplorationAndEvaluationAssets
790	Loss on partial disposal of the asset held for sale	Concept (Monetary)	For Period	Debit	ifrs-full:LossesOnDisposalsOfInvestments
791	Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
792	Surface rights remaining for sale	Concept (Monetary)	As Of	Debit	ptm:SurfaceRightsRemainingForSale
793	Remaining asset held for sale	Concept (Monetary)	As Of	Debit	ifrs-full:NetAssetsLiabilities
794	164 - Disclosure - Disclosure of detailed information about exploration and evaluation assets explanatory (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutExplorationAndEvaluationAssetsExplanatoryTableTextBlockDetails
795	Statement [Table]	Table	*	*	ptm:StatementTable
796	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
797	Entity [Domain]	Member			dei:EntityDomain
798	Statement [Line Items]	LineItems			ptm:StatementLineItems
799	Exploration and evaluation assets, beginning of period	Concept (Monetary)	As Of	Debit	ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources
800	Additions	Concept (Monetary)	For Period	Debit	ptm:ExplorationAndEvaluationAssetsAdditions
801	Disposal	Concept (Monetary)	For Period	Credit	ptm:ExplorationAndEvaluationAssetsDisposals
802	Recoveries	Concept (Monetary)	For Period	Credit	ptm:ExplorationAndEvaluationAssetsRecoveries
803	Write-downs	Concept (Monetary)	For Period	Credit	ptm:ExplorationAndEvaluationAssetsWriteDowns
804	Foreign exchange movement	Concept (Monetary)	For Period	Debit	ptm:IncreaseDecreaseThroughNetExchangeDifferencesMineralProperties
805	Exploration and evaluation assets, end of period	Concept (Monetary)	As Of	Debit	ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources
806	165 - Disclosure - Disclosure of detailed information about loans payable explanatory (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutLoansPayableExplanatoryTableTextBlockDetails
807	Statement [Table]	Table	*	*	ptm:StatementTable
808	Borrowings by name [Axis]	Axis			ifrs-full:BorrowingsByNameAxis
809	Borrowings by name [Domain]	Member			ifrs-full:BorrowingsByNameMember
810	Sprott Facility [Member]	Member			ptm:SprottFacilityLoanMember
811	Sprott Facility and LMM Facility [Member]	Member			ptm:SprottFacilityAndLmmFacilityMember
812	Components of Loans [Axis]	Axis			ptm:ComponentsOfLoansAxis
813	Components of Loans [Domain]	Member			ptm:ComponentsOfLoansDomain
814	Facility drawn down [Member]	Member			ptm:FacilityDrawnDownMember
815	Adjustment to amortized cost of LMM Production Payment Payable [Member]	Member			ptm:AdjustmentToAmortizedCostOfLmmProductionPaymentPayableMember
816	Additional Production Payment accrual [Member]	Member			ptm:AdditionalProductionPaymentAccrualMember
817	Production Payment termination accrual [Member]	Member			ptm:ProductionPaymentTerminationAccrualMember
818	Production Payment Payable [Member]	Member			ptm:ProductionPaymentPayableMember
819	Loan Facility [Member]	Member			ptm:LoanFacilityMember
820	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
821	Entity [Domain]	Member			dei:EntityDomain
822	Statement [Line Items]	LineItems			ptm:StatementLineItems
823	Repayment	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfNoncurrentBorrowings
824	Drawdown, Standby, Amendment, Legal and Other Fees	Concept (Monetary)	For Period	Credit	ptm:DrawdownStandbyAmendmentLegalAndOtherFees
825	Interest paid on loan balance	Concept (Monetary)	For Period	Credit	ifrs-full:InterestPaidClassifiedAsFinancingActivities
826	Interest and finance cost at effective interest rate	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpenseOnBorrowings
827	Adjustment to amortized cost	Concept (Monetary)	For Period	Credit	ptm:BorrowingsAdjustmentToAmortizedCost
828	Current portion of loan payable	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
829	Non-current portion loans payable	Concept (Monetary)	As Of	Credit	ifrs-full:LongtermBorrowings
830	Carrying value Loans Payable	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
831	166 - Disclosure - Disclosure of detailed information about brokerage fees explanatory (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutBrokerageFeesExplanatoryTableTextBlockDetails
832	Statement [Table]	Table	*	*	ptm:StatementTable
833	Borrowings by name [Axis]	Axis			ifrs-full:BorrowingsByNameAxis
834	Borrowings by name [Domain]	Member			ifrs-full:BorrowingsByNameMember
835	LMM Facility [Member]	Member			ptm:LmmFacilityLoanMember
836	Sprott Facility and LMM Facility [Member]	Member			ptm:SprottFacilityAndLmmFacilityMember
837	Components of Loans [Axis]	Axis			ptm:ComponentsOfLoansAxis
838	Components of Loans [Domain]	Member			ptm:ComponentsOfLoansDomain
839	Brokerage Fees [Member]	Member			ptm:BrokerageFeesMember
840	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
841	Entity [Domain]	Member			dei:EntityDomain
842	Statement [Line Items]	LineItems			ptm:StatementLineItems
843	Loan Payable	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentLiabilities
844	167 - Disclosure - Disclosure of detailed information about borrowings (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutBorrowingsExplanatoryDetails
845	Statement [Table]	Table	*	*	ptm:StatementTable
846	Borrowings by name [Axis]	Axis			ifrs-full:BorrowingsByNameAxis
847	Borrowings by name [Domain]	Member			ifrs-full:BorrowingsByNameMember
848	Convertible Notes [Member]	Member			ptm:ConvertibleNotesMember
849	Sprott Facility and LMM Facility [Member]	Member			ptm:SprottFacilityAndLmmFacilityMember
850	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
851	Entity [Domain]	Member			dei:EntityDomain
852	Statement [Line Items]	LineItems			ptm:StatementLineItems
853	Face value convertible notes	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
854	Costs associated with the debt	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsForDebtIssueCosts
855	Interest payments	Concept (Monetary)	For Period	Credit	ptm:InterestPaidOnBorrowings
856	Accretion and interest	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpenseOnBorrowings
857	Redemption	Concept (Monetary)	For Period	Debit	ptm:BorrowingsConverted
858	Value attributed to debt portion of convertible notes	Concept (Monetary)	As Of	Credit	ptm:ValueAttributedToDebtPortionOfConvertibleNotes
859	Embedded Derivative fair value	Concept (Monetary)	As Of	Credit	ifrs-full:DerivativeFinancialLiabilities
860	Convertible Notes	Concept (Monetary)	As Of	Credit	ifrs-full:OtherBorrowings
861	168 - Disclosure - Disclosure of detailed information about valuation assumptions for embedded derivatives (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutValuationAssumptionsForEmbeddedDerivativesTableTextBlockDetails
862	Statement [Table]	Table	*	*	ptm:StatementTable
863	Borrowings by name [Axis]	Axis			ifrs-full:BorrowingsByNameAxis
864	Borrowings by name [Domain]	Member			ifrs-full:BorrowingsByNameMember
865	Convertible Notes [Member]	Member			ptm:ConvertibleNotesMember
866	Sprott Facility and LMM Facility [Member]	Member			ptm:SprottFacilityAndLmmFacilityMember
867	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
868	Entity [Domain]	Member			dei:EntityDomain
869	Statement [Line Items]	LineItems			ptm:StatementLineItems
870	Share price, convertible notes	Concept (Share)	As Of		ptm:SharePriceConvertibleNotes
871	Expected volatility, convertible notes	Concept (Percent)	As Of		ptm:ExpectedVolatilityConvertibleNotes
872	Risk free interest rate, convertible notes	Concept (Percent)	As Of		ptm:RiskFreeInterestRateConvertibleNotes
873	Credit spread, convertible notes	Concept (Percent)	As Of		ptm:CreditSpreadConvertibleNotes
874	All-in rate, convertible notes	Concept (Percent)	As Of		ptm:AllInRateConvertibleNotes
875	Implied discount on share price, convertible notes	Concept (Percent)	As Of		ptm:ImpliedDiscountOnSharePriceConvertibleNotes
876	169 - Disclosure - Disclosure of number and weighted average exercise prices of share options (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatoryDetails
877	Statement [Table]	Table	*	*	ptm:StatementTable
878	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
879	Entity [Domain]	Member			dei:EntityDomain
880	Statement [Line Items]	LineItems			ptm:StatementLineItems
881	Number of share options outstanding in share-based payment arrangement at beginning of period	Concept (Decimal)	As Of		ifrs-full:NumberOfOutstandingShareOptions
882	Weighted average exercise price of share options outstanding in share-based payment arrangement at beginning of period	Concept (Monetary)	As Of		ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
883	Number of share options granted in share-based payment arrangement	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
884	Weighted average exercise price of share options granted in share-based payment arrangement	Concept (Monetary)	For Period		ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
885	Number of share options exercised in share-based payment arrangement	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
886	Weighted average exercise price of share options exercised in share-based payment arrangement	Concept (Monetary)	For Period		ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement
887	Number of share options forfeited in share-based payment arrangement	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
888	Weighted average exercise price of share options forfeited in share-based payment arrangement	Concept (Monetary)	For Period		ifrs-full:WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement
889	Number of share options outstanding in share-based payment arrangement at end of period	Concept (Decimal)	As Of		ifrs-full:NumberOfOutstandingShareOptions
890	Weighted average exercise price of share options outstanding in share-based payment arrangement at end of period	Concept (Monetary)	As Of		ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
891	170 - Disclosure - Disclosure of number and weighted average remaining contractual life of outstanding share options (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsExplanatoryDetails
892	Statement [Table]	Table	*	*	ptm:StatementTable
893	Ranges of exercise prices for outstanding share options [Axis]	Axis			ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
894	Ranges of exercise prices for outstanding share options [Domain]	Member			ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
895	Options outstanding 1 [Member]	Member			ptm:OptionsOutstandingOneMember
896	Options outstanding 2 [Member]	Member			ptm:OptionsOutstandingTwoMember
897	Options outstanding 3 [Member]	Member			ptm:OptionsOutstandingThreeMember
898	Options outstanding 4 [Member]	Member			ptm:OptionsOutstandingFourMember
899	Options outstanding 5 [Member]	Member			ptm:OptionsOutstandingFiveMember
900	Options outstanding 6 [Member]	Member			ptm:OptionsOutstandingSixMember
901	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
902	Entity [Domain]	Member			dei:EntityDomain
903	Statement [Line Items]	LineItems			ptm:StatementLineItems
904	Number of share options outstanding in share-based payment arrangement	Concept (Decimal)	As Of		ifrs-full:NumberOfOutstandingShareOptions
905	Number of share options exercisable in share-based payment arrangement	Concept (Decimal)	As Of		ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
906	Exercise price of outstanding share options	Concept (Monetary)	As Of		ifrs-full:ExercisePriceOfOutstandingShareOptions
907	Weighted average remaining contractual life of outstanding share options	Concept (Decimal)	As Of		ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
908	171 - Disclosure - Disclosure of detailed information about non-controlling interests explanatory (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutNoncontrollingInterestsExplanatoryTableTextBlockDetails
909	Statement [Table]	Table	*	*	ptm:StatementTable
910	Subsidiaries [Axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
911	Entity's total for subsidiaries [Domain]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
912	Maseve Investments 11 (Pty) Ltd. [Member]	Member			ptm:MaseveInvestmentsOneOnePtyLtdMember
913	Mnombo Wethu Consultants (Pty) Limited [Member]	Member			ptm:MnomboMember
914	Waterberg JV Co. [Member]	Member			ptm:WaterbergJvCoMember
915	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
916	Entity [Domain]	Member			dei:EntityDomain
917	Statement [Line Items]	LineItems			ptm:StatementLineItems
918	Proportion of ownership and voting rights held by non-controlling interests	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
919	Loss allocated to non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToNoncontrollingInterests
920	Accumulated non-controlling interests	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
921	172 - Disclosure - Disclosure of information about key management personnel (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfInformationAboutKeyManagementPersonnelExplanatoryDetails
922	Statement [Table]	Table	*	*	ptm:StatementTable
923	Categories of related parties [Axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
924	Related parties [Domain]	Member			ifrs-full:RelatedPartiesMember
925	Management [Member]	Member			ifrs-full:SeparateManagementEntitiesMember
926	Directors [Member]	Member			ptm:DirectorsMember
927	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
928	Entity [Domain]	Member			dei:EntityDomain
929	Statement [Line Items]	LineItems			ptm:StatementLineItems
930	Salaries	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
931	Directors fees	Concept (Monetary)	For Period	Debit	ifrs-full:DirectorsRemunerationExpense
932	Share-based payments	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
933	Key Management Compensation	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensation
934	173 - Disclosure - Disclosure of detailed information about commitments (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutCommitmentsExplanatoryDetails
935	Statement [Table]	Table	*	*	ptm:StatementTable
936	Commitments [Axis]	Axis			ptm:CommitmentsAxis
937	Commitments [Domain]	Member			ptm:CommitmentsDomain
938	Lease obligations [Member]	Member			ifrs-full:LeaseLiabilitiesMember
939	Contractor payments [Member]	Member			ptm:ContractorPaymentsMember
940	Convertible Note [Member]	Member			ptm:CommitmentsConvertibleNoteMember
941	Eskom power [Member]	Member			ptm:EskomPowerMember
942	Mining Development [Member]	Member			ptm:MiningDevelopmentCommitmentMember
943	Mining Indirect and Other [Member]	Member			ptm:MiningIndirectAndOtherCommitmentMember
944	Sprott Facility [Member]	Member			ptm:SprottFacilityMember
945	LMM Facility [Member]	Member			ptm:LMMFacilityMember
946	Maturity [Axis]	Axis			ifrs-full:MaturityAxis
947	Aggregated time bands[Domain]	Member			ifrs-full:AggregatedTimeBandsMember
948	Less than 1 Year [Member]	Member			ifrs-full:NotLaterThanOneYearMember
949	1 to 3 Years [Member]	Member			ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
950	4 to 5 Years [Member]	Member			ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
951	More than 5 Years [Member]	Member			ifrs-full:LaterThanFiveYearsMember
952	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
953	Entity [Domain]	Member			dei:EntityDomain
954	Statement [Line Items]	LineItems			ptm:StatementLineItems
955	Capital commitments	Concept (Monetary)	As Of	Credit	ifrs-full:CapitalCommitments
956	174 - Disclosure - Disclosure of detailed information about non-cash working capital (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutNoncashWorkingCapitalTableTextBlockDetails
957	Statement [Table]	Table	*	*	ptm:StatementTable
958	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
959	Entity [Domain]	Member			dei:EntityDomain
960	Statement [Line Items]	LineItems			ptm:StatementLineItems
961	Amounts receivable, prepaid expenses and other assets	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDecreaseIncreaseInOtherAssets
962	Accounts payable and accrued liabilities	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables
963	Net change in non-cash working capital	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseInWorkingCapital
964	175 - Disclosure - Disclosure of operating segments (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfOperatingSegmentsExplanatoryDetails
965	Statement [Table]	Table	*	*	ptm:StatementTable
966	Segments [Axis]	Axis			ifrs-full:SegmentsAxis
967	Segments [Domain]	Member			ifrs-full:SegmentsMember
968	Canada [Member]	Member			country:CA
969	South Africa Maseve [Member]	Member			ptm:SouthAfricaMaseveMember
970	South Africa Waterberg [Member]	Member			ptm:SouthAfricaWaterbergMember
971	South Africa Other [Member]	Member			ptm:SouthAfricaOtherMember
972	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
973	Entity [Domain]	Member			dei:EntityDomain
974	Statement [Line Items]	LineItems			ptm:StatementLineItems
975	Assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
976	Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
977	Total Comprehensive Loss/(Income)	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
978	176 - Disclosure - Disclosure of detailed information about general and administrative expenses explanatory (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutGeneralAndAdministrativeExpensesExplanatoryTableTextBlockDetails
979	Statement [Table]	Table	*	*	ptm:StatementTable
980	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
981	Entity [Domain]	Member			dei:EntityDomain
982	Statement [Line Items]	LineItems			ptm:StatementLineItems
983	Salaries and benefits	Concept (Monetary)	For Period	Debit	ifrs-full:WagesAndSalaries
984	Professional/consulting fees	Concept (Monetary)	For Period	Debit	ifrs-full:ProfessionalFeesExpense
985	Onerous lease accrual	Concept (Monetary)	For Period	Debit	ptm:OnerousLeaseAccrual
986	Depreciation	Concept (Monetary)	For Period	Debit	ifrs-full:DepreciationExpense
987	Rent	Concept (Monetary)	For Period	Debit	ifrs-full:RentalExpense
988	Insurance	Concept (Monetary)	For Period	Debit	ifrs-full:InsuranceExpense
989	Travel	Concept (Monetary)	For Period	Debit	ifrs-full:TravelExpense
990	Regulatory Fees	Concept (Monetary)	For Period	Debit	ptm:RegulatoryFees
991	Accretion	Concept (Monetary)	For Period	Debit	ptm:Accretion
992	Other	Concept (Monetary)	For Period	Debit	ifrs-full:OtherExpenseByFunction
993	Total	Concept (Monetary)	For Period	Debit	ifrs-full:GeneralAndAdministrativeExpense
994	177 - Disclosure - Disclosure of foreign currency risk explanatory (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfForeignCurrencyRiskExplanatoryTableTextBlockDetails
995	Statement [Table]	Table	*	*	ptm:StatementTable
996	Currencies [Axis]	Axis			ptm:CurrenciesAxis
997	Currencies [Domain]	Member			ptm:CurrenciesDomain
998	Amounts held in Rand [Member]	Member			ptm:AmountsHeldInRandMember
999	Amounts held in USD [Member]	Member			ptm:AmountsHeldInUsdMember
1000	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
1001	Entity [Domain]	Member			dei:EntityDomain
1002	Statement [Line Items]	LineItems			ptm:StatementLineItems
1003	Cash	Concept (Monetary)	As Of	Debit	ifrs-full:Cash
1004	Accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
1005	Marketable Securities	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentFinancialAssetsAvailableforsale
1006	Accounts payable	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherPayables
1007	Loan payable	Concept (Monetary)	As Of	Credit	ifrs-full:OtherPayables
1008	Convertible Notes	Concept (Monetary)	As Of	Credit	ifrs-full:OtherBorrowings
1009	178 - Disclosure - Disclosure of detailed information about effective income tax expense recovery (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDetailedInformationAboutEffectiveIncomeTaxExpenseRecoveryExplanatoryDetails
1010	Statement [Table]	Table	*	*	ptm:StatementTable
1011	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
1012	Entity [Domain]	Member			dei:EntityDomain
1013	Statement [Line Items]	LineItems			ptm:StatementLineItems
1014	Loss before income taxes	Concept (Monetary)	For Period	Credit	ifrs-full:AccountingProfit
1015	Income tax recovery at statutory rates	Concept (Monetary)	For Period	Debit	ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1016	Difference of foreign tax rates	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectOfForeignTaxRates
1017	Non-deductible expenses and non-taxable portion of capital gains	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1018	Changes in unrecognized deferred tax assets and other	Concept (Monetary)	For Period	Debit	ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1019	Income tax expense (recovery)	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
1020	Current income taxes	Concept (Monetary)	For Period	Debit	ifrs-full:CurrentTaxExpenseIncome
1021	Deferred income taxes	Concept (Monetary)	For Period		ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1022	Deferred income tax expense (recovery)	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncome
1023	179 - Disclosure - Disclosure of deferred taxes (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfDeferredTaxesExplanatoryDetails
1024	Statement [Table]	Table	*	*	ptm:StatementTable
1025	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
1026	Entity [Domain]	Member			dei:EntityDomain
1027	Statement [Line Items]	LineItems			ptm:StatementLineItems
1028	Deferred tax liability at the beginning of the year	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilities
1029	Tax recovery relating to the loss (income) from continuing operations	Concept (Monetary)	For Period	Debit	ptm:IncomeTaxRelatingToContinuingOperations
1030	Tax (expense) recovery relating to components of other comprehensive income	Concept (Monetary)	For Period		ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1031	Tax (expense) recovery recorded in deficit	Concept (Monetary)	For Period	Debit	ptm:IncomeTaxRecoveryRecordedInDeficit
1032	Deferred tax liability at the end of the year	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilities
1033	180 - Disclosure - Disclosure of changes in deferred tax assets and liabilities explanatory (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfChangesInDeferredTaxAssetsAndLiabilitiesExplanatoryTableTextBlockDetails
1034	Statement [Table]	Table	*	*	ptm:StatementTable
1035	Components of deferred tax liabilities assets [Axis]	Axis			ptm:ComponentsOfDeferredTaxLiabilitiesAssetsAxis
1036	Components of deferred tax liabilities assets [Domain]	Member			ptm:ComponentsOfDeferredTaxLiabilitiesAssetsDomain
1037	Mineral properties [Member]	Member			ptm:DeferredTaxLiabilitiesMineralPropertiesMember
1038	Loss carry forwards [Member]	Member			ptm:LossCarryForwardsMember
1039	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
1040	Entity [Domain]	Member			dei:EntityDomain
1041	Statement [Line Items]	LineItems			ptm:StatementLineItems
1042	Deferred tax liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilities
1043	Deferred tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:DeferredTaxAssets
1044	Net deferred tax liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NetDeferredTaxLiabilities
1045	181 - Disclosure - Disclosure of temporary difference, unused tax losses and unused tax credits (Details)	Network	*	*	http://www.platinumgroupmetals.net/taxonomy/role/DisclosureDisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatoryDetails
1046	Statement [Table]	Table	*	*	ptm:StatementTable
1047	Temporary difference, unused tax losses and unused tax credits [Axis]	Axis			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1048	Temporary difference, unused tax losses and unused tax credits [Domain]	Member			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1049	Operating loss carry forwards Canada [Member]	Member			ptm:OperatingLossCarryForwardsCanadaMember
1050	Operating loss carry forwards South Africa [Member]	Member			ptm:OperatingLossCarryForwardsSouthAfricaMember
1051	Net capital loss carry forwards [Member]	Member			ptm:NetCapitalLossCarryForwardsMember
1052	Mineral properties [Member]	Member			ptm:TemporaryDifferencesMineralPropertiesMember
1053	Financing Costs [Member]	Member			ptm:TemporaryDifferenceFinancingCostsMember
1054	Property, plant and equipment [Member]	Member			ptm:TemporaryDifferencePropertyPlantAndEquipmentMember
1055	Other [Member]	Member			ifrs-full:OtherTemporaryDifferencesMember
1056	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
1057	Entity [Domain]	Member			dei:EntityDomain
1058	Statement [Line Items]	LineItems			ptm:StatementLineItems
1059	Tax Losses	Concept (Monetary)	As Of		ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
1060	Temporary Differences	Concept (Monetary)	As Of		ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
1061	Investment Tax Credits	Concept (Monetary)	As Of	Debit	ptm:InvestmentTaxCredits