Kirkland Lake Gold Ltd. (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line	Label	Object Class	Period Type	Balance	Report ElementName
1	0001000 - Document - Document and Entity Information	Network	*	*	http://klgold.com/role/DocumentAndEntityInformation
2	Implied Table	Table	*	*	implied:Table
3	Document And Entity Information [Abstract]	Abstract			kl:DocumentAndEntityInformationAbstract
4	Document type	Concept (Submission Type)	For Period		dei:DocumentType
5	Document period end date	Concept (Date)	For Period		dei:DocumentPeriodEndDate
6	Amendment flag	Concept (Yes/No)	For Period		dei:AmendmentFlag
7	Registrant name	Concept (Text/String)	For Period		dei:EntityRegistrantName
8	Central index key	Concept (CIK Number)	For Period		dei:EntityCentralIndexKey
9	Current reporting status	Concept (Yes/No)	For Period		dei:EntityCurrentReportingStatus
10	Current fiscal year end date	Concept (Month/Day)	For Period		dei:CurrentFiscalYearEndDate
11	Entity public float	Concept (Monetary)	As Of	Credit	dei:EntityPublicFloat
12	Document fiscal year focus	Concept (Year)	For Period		dei:DocumentFiscalYearFocus
13	Document fiscal period focus	Concept (Fiscal Period)	For Period		dei:DocumentFiscalPeriodFocus
14	Entity common stock shares outstanding	Concept (Shares)	As Of		dei:EntityCommonStockSharesOutstanding
15	1001000 - Statement - Consolidated Statements of Financial Position	Network	*	*	http://klgold.com/role/ConsolidatedStatementsOfFinancialPosition
16	Implied Table	Table	*	*	implied:Table
17	Statement of financial position [abstract]	Abstract			ifrs-full:StatementOfFinancialPositionAbstract
18	Assets	Abstract			ifrs-full:AssetsAbstract
19	Current assets	Abstract			ifrs-full:CurrentAssetsAbstract
20	Cash	Concept (Monetary)	As Of	Debit	ifrs-full:Cash
21	Accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
22	Inventories	Concept (Monetary)	As Of	Debit	ifrs-full:Inventories
23	Prepaid expenses	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentPrepaidExpenses
24	Current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
25	Non-current assets	Abstract			ifrs-full:NoncurrentAssetsAbstract
26	Other long-term assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNoncurrentFinancialAssets
27	Restricted cash	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
28	Mining interests and plant and equipment	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
29	Deferred tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:DeferredTaxAssets
30	Total assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
31	Liabilities	Abstract			ifrs-full:LiabilitiesAbstract
32	Current liabilities	Abstract			ifrs-full:CurrentLiabilitiesAbstract
33	Accounts payable and accrued liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
34	Share based liabilities	Concept (Monetary)	As Of	Credit	kl:CurrentLiabilitiesFromSharebasedPaymentTransactions
35	Finance leases	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLeaseLiabilities
36	Income tax payable	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentTaxLiabilitiesCurrent
37	Provisions	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentProvisions
38	Current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
39	Non-current liabilities	Abstract			ifrs-full:NoncurrentLiabilitiesAbstract
40	Share based liabilities	Concept (Monetary)	As Of	Credit	kl:NoncurrentLiabilitiesFromSharebasedPaymentTransactions
41	Finance leases	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLeaseLiabilities
42	Long-term balance	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentProvisions
43	Deferred tax liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilities
44	Total liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
45	Shareholders' equity	Abstract			ifrs-full:EquityAbstract
46	Share capital	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
47	Reserves	Concept (Monetary)	As Of	Credit	ifrs-full:OtherReserves
48	Accumulated other comprehensive income (loss)	Concept (Monetary)	As Of	Credit	ifrs-full:AccumulatedOtherComprehensiveIncome
49	Retained earnings	Concept (Monetary)	As Of	Credit	ifrs-full:RetainedEarnings
50	Shareholders' equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
51	Liabilities and shareholders' equity	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAndLiabilities
52	1001000 - Statement - Consolidated Statements of Operations and Comprehensive Income	Network	*	*	http://klgold.com/role/ConsolidatedStatementsOfOperationsAndComprehensiveIncome
53	Implied Table	Table	*	*	implied:Table
54	Profit or loss [abstract]	Abstract			ifrs-full:IncomeStatementAbstract
55	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
56	Production costs	Concept (Monetary)	For Period	Debit	ifrs-full:CostOfSales
57	Royalty expense	Concept (Monetary)	For Period	Debit	ifrs-full:RoyaltyExpense
58	Depletion and depreciation	Concept (Monetary)	For Period	Debit	kl:DepletionAndDepreciation
59	Earnings (loss) from mine operations	Concept (Monetary)	For Period	Credit	ifrs-full:GrossProfit
60	Expenses	Abstract			ifrs-full:ExpenseByNatureAbstract
61	General and administrative	Concept (Monetary)	For Period	Debit	ifrs-full:AdministrativeExpense
62	Transaction costs	Concept (Monetary)	For Period	Debit	ifrs-full:AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
63	Exploration and evaluation	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
64	Care and maintenance	Concept (Monetary)	For Period	Debit	ifrs-full:RepairsAndMaintenanceExpense
65	Earnings (loss) from operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromOperatingActivities
66	Other income, net	Concept (Monetary)	For Period	Credit	ifrs-full:OtherGainsLosses
67	Finance items	Abstract			kl:FinanceIncomeExpenseAbstract
68	Finance income	Concept (Monetary)	For Period	Credit	ifrs-full:FinanceIncome
69	Finance costs	Concept (Monetary)	For Period	Debit	ifrs-full:FinanceCosts
70	Earnings before taxes from continuing operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
71	Current income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:CurrentTaxExpenseIncome
72	Deferred tax (expense) recovery	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncome
73	Earnings from continuing operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromContinuingOperations
74	Loss from discontinued operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromDiscontinuedOperations
75	Net earnings	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
76	Other comprehensive income	Abstract			ifrs-full:OtherComprehensiveIncomeAbstract
77	Changes in fair value of investments in equity securities, net of $3,758 tax	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxAvailableforsaleFinancialAssets
78	Exchange differences on translation of foreign operations	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
79	Changes in fair value of investments in equity securities, net of $1,674 tax recovery	Concept (Monetary)	For Period	Credit	kl:OtherComprehensiveIncomeNetOfTaxAvailableForSaleFinancialAssetsWillNotBeReclassified
80	Total other comprehensive income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
81	Comprehensive income	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
82	Basic earnings per share from continuing operations (in dollars per share)	Concept (Share)	For Period		ifrs-full:BasicEarningsLossPerShareFromContinuingOperations
83	Diluted earnings per share from continuing operations (in dollars per share)	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShareFromContinuingOperations
84	Basic loss per share from discontinued operations (in dollars per share)	Concept (Share)	For Period		ifrs-full:BasicEarningsLossPerShareFromDiscontinuedOperations
85	Diluted loss per share from discontinued operations (in dollars per share)	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShareFromDiscontinuedOperations
86	Basic earnings per share (in dollars per share)	Concept (Share)	For Period		ifrs-full:BasicEarningsLossPerShare
87	Diluted earnings per share (in dollars per share)	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShare
88	Weighted average number of common shares outstanding (in 000's)	Abstract			ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
89	Basic (in shares)	Concept (Shares)	For Period		ifrs-full:WeightedAverageShares
90	Diluted (in shares)	Concept (Shares)	For Period		ifrs-full:AdjustedWeightedAverageShares
91	1001001 - Statement - Consolidated Statements of Operations and Comprehensive Income (Parenthetical)	Network	*	*	http://klgold.com/role/ConsolidatedStatementsOfOperationsAndComprehensiveIncomeParenthetical
92	Implied Table	Table	*	*	implied:Table
93	Profit or loss [abstract]	Abstract			ifrs-full:IncomeStatementAbstract
94	Income tax relating to available-for-sale financial assets of other comprehensive income	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome
95	Income tax relating to available-for-sale financial assets of other comprehensive income that will not be reclassified	Concept (Monetary)	For Period	Debit	kl:OtherComprehensiveIncomeNetOfTaxAvailableForSaleFinancialAssetsWillNotBeReclassifiedTax
96	1003000 - Statement - Consolidated Statements of Cash Flows	Network	*	*	http://klgold.com/role/ConsolidatedStatementsOfCashFlows
97	Implied Table	Table	*	*	implied:Table
98	Statement of cash flows [abstract]	Abstract			ifrs-full:StatementOfCashFlowsAbstract
99	Operating activities	Abstract			ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
100	Earnings from continuing operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromContinuingOperations
101	Depletion and depreciation	Concept (Monetary)	For Period	Debit	kl:DepletionAndDepreciation
102	Share based payment expense	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForSharebasedPayments
103	Other income, net	Concept (Monetary)	For Period	Credit	ifrs-full:OtherGainsLosses
104	Finance items, net	Concept (Monetary)	For Period	Credit	ifrs-full:AdjustmentsForFinanceIncomeCost
105	Income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForIncomeTaxExpense
106	Income tax paid	Concept (Monetary)	For Period	Credit	ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
107	Cash reclamation expenditures	Concept (Monetary)	For Period	Debit	kl:ReclamationExpendituresClassifiedAsOperatingActivities
108	Change in non-cash working capital	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseInWorkingCapital
109	Net cash provided by operating activities of continuing operations	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInOperatingActivitiesContinuingOperations
110	Net cash used in operating activities of discontinued operations	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations
111	Investing activities	Abstract			ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
112	Additions to mining interests	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfMiningAssets
113	Additions to plant and equipment	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
114	Additions to other long-term assets	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfOtherLongtermAssetsClassifiedAsInvestingActivities
115	Investments in public and private entities	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfAvailableforsaleFinancialAssets
116	Sale of investment in equity security	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromDisposalOrMaturityOfAvailableforsaleFinancialAssets
117	Sale of Stawell Mine	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromDisposalOfMiningAssets
118	Proceeds on dispositions of assets	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations
119	Transfer to restricted cash, net	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInDecreaseIncreaseInRestrictedCashAndCashEquivalents
120	Net cash used in investing activities of continuing operations	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInInvestingActivitiesContinuingOperations
121	Net cash used in investing activities of discontinued operations	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations
122	Financing activities	Abstract			ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
123	Proceeds from exercise of stock options	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromExerciseOfOptions
124	Interest received (paid)	Concept (Monetary)	For Period	Credit	ifrs-full:InterestPaidClassifiedAsFinancingActivities
125	Payment of finance lease obligations	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
126	Payment of dividends	Concept (Monetary)	For Period	Credit	ifrs-full:DividendsPaidClassifiedAsFinancingActivities
127	Share repurchases	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsToAcquireOrRedeemEntitysShares
128	Redemption of convertible debentures	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfBondsNotesAndDebentures
129	Net cash used in financing activities of continuing operations	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInFinancingActivitiesContinuingOperations
130	Net cash used in financing activities of discontinued operations	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations
131	Impact of foreign exchange on cash balances of continuing operations	Concept (Monetary)	For Period	Debit	kl:EffectOfExchangeRateChangesOnCashAndCashEquivalentsContinuingOperations
132	Impact of foreign exchange on cash balances of discontinued operations	Concept (Monetary)	For Period	Debit	kl:EffectOfExchangeRateChangesOnCashAndCashEquivalentsDiscontinuedOperations
133	Change in cash of continuing operations during the year	Concept (Monetary)	For Period	Debit	kl:IncreaseDecreaseInCashAndCashEquivalentsContinuingOperations
134	Change in cash of discontinued operations during the year	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations
135	Change in cash	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
136	Cash, beginning of year	Concept (Monetary)	As Of	Debit	ifrs-full:Cash
137	Cash, end of year	Concept (Monetary)	As Of	Debit	ifrs-full:Cash
138	1004000 - Statement - Consolidated Statements of Changes in Equity	Network	*	*	http://klgold.com/role/ConsolidatedStatementsOfChangesInEquity
139	Statement of changes in equity [table]	Table	*	*	ifrs-full:StatementOfChangesInEquityTable
140	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
141	Equity [member]	Member			ifrs-full:EquityMember
142	Share Capital	Member			ifrs-full:IssuedCapitalMember
143	Equity portion of convertible debentures	Member			ifrs-full:ReserveOfEquityComponentOfConvertibleInstrumentsMember
144	Share based payments and other reserves	Member			ifrs-full:ReserveOfSharebasedPaymentsMember
145	Foreign currency translation	Member			ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
146	Investment revaluation	Member			ifrs-full:RevaluationSurplusMember
147	Retained earnings	Member			ifrs-full:RetainedEarningsMember
148	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
149	Changes in equity [abstract]	Abstract			ifrs-full:ChangesInEquityAbstract
150	Shareholders' equity, beginning balance (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesOutstanding
151	Shareholders' equity, beginning balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
152	Exercise of share options, including transfer from reserves (in shares)	Concept (Shares)	For Period		kl:StockIssuedDuringPeriodSharesStockOptionsExercised1
153	Exercise of share options, including transfer from reserves	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughExerciseOfOptions
154	Share issuance (in shares)	Concept (Shares)	For Period		ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
155	Share issuance	Concept (Monetary)	For Period	Credit	ifrs-full:IssueOfEquity
156	Redemption of convertible debentures (in shares)	Concept (Shares)	For Period		kl:IncreaseDecreaseThroughConversionOfConvertibleInstrumentsShares
157	Redemption of convertible debentures	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughConversionOfConvertibleInstruments
158	Share based payments expense	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
159	Foreign currency translation	Concept (Monetary)	For Period	Debit	ifrs-full:AmountRemovedFromReserveOfChangeInValueOfForeignCurrencyBasisSpreadsAndIncludedInInitialCostOrOtherCarryingAmountOfNonfinancialAssetLiabilityOrFirmCommitmentForWhichFairValueHedgeAccountingIsApplied
160	Reclassification of foreign currency translation reserve to net earnings	Concept (Monetary)	For Period	Debit	ifrs-full:ReclassificationAdjustmentsOnChangeInValueOfForeignCurrencyBasisSpreadsNetOfTax
161	Change in fair value of investments in equity securities, net of tax	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsNetOfTax
162	Realized gain of sale of JDS Silver, net of tax	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughChangeInEquityOfSubsidiaries
163	Dividends declared	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsPaid
164	Share repurchases (in shares)	Concept (Shares)	For Period		kl:StockRepurchasedDuringPeriodShares1
165	Share repurchases	Concept (Monetary)	For Period	Debit	kl:StockRepurchasedDuringPeriodValue1
166	Net earnings	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
167	Shareholders' equity, ending balance (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesOutstanding
168	Shareholders' equity, ending balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
169	2101100 - Disclosure - DESCRIPTION OF BUSINESS AND NATURE OF OPERATIONS	Network	*	*	http://klgold.com/role/DescriptionOfBusinessAndNatureOfOperations
170	Implied Table	Table	*	*	implied:Table
171	Management Commentary [Abstract]	Abstract			kl:ManagementCommentaryAbstract
172	DESCRIPTION OF BUSINESS AND NATURE OF OPERATIONS	Concept (Text Block (HTML))	For Period		kl:DisclosureOfNatureOfBusinessExplanatoryTextBlock
173	2102100 - Disclosure - BASIS OF PREPARATION	Network	*	*	http://klgold.com/role/BasisOfPreparation
174	Implied Table	Table	*	*	implied:Table
175	General Information About Financial Statements [Abstract]	Abstract			kl:GeneralInformationAboutFinancialStatementsAbstract
176	BASIS OF PREPARATION	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
177	2103100 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES	Network	*	*	http://klgold.com/role/SignificantAccountingPolicies
178	Implied Table	Table	*	*	implied:Table
179	List Of Accounting Policies [Abstract]	Abstract			kl:ListOfAccountingPoliciesAbstract
180	SIGNIFICANT ACCOUNTING POLICIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
181	2104100 - Disclosure - SIGNIFICANT ACCOUNTING JUDGMENTS AND KEY SOURCES OF ESTIMATION UNCERTAINTY	Network	*	*	http://klgold.com/role/SignificantAccountingJudgmentsAndKeySourcesOfEstimationUncertainty
182	Implied Table	Table	*	*	implied:Table
183	General Information About Financial Statements [Abstract]	Abstract			kl:GeneralInformationAboutFinancialStatementsAbstract
184	SIGNIFICANT ACCOUNTING JUDGMENTS AND KEY SOURCES OF ESTIMATION UNCERTAINTY	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
185	2105100 - Disclosure - ADOPTION OF NEW ACCOUNTING STANDARDS	Network	*	*	http://klgold.com/role/AdoptionOfNewAccountingStandards
186	Implied Table	Table	*	*	implied:Table
187	Accounting Policies, Changes In Accounting Estimates And Errors [Abstract]	Abstract			kl:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
188	ADOPTION OF NEW ACCOUNTING STANDARDS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory
189	2108100 - Disclosure - PRODUCTION COSTS	Network	*	*	http://klgold.com/role/ProductionCosts
190	Implied Table	Table	*	*	implied:Table
191	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
192	PRODUCTION COSTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCostOfSalesExplanatory
193	2109100 - Disclosure - GENERAL AND ADMINISTRATIVE EXPENSES	Network	*	*	http://klgold.com/role/GeneralAndAdministrativeExpenses
194	Implied Table	Table	*	*	implied:Table
195	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
196	GENERAL AND ADMINISTRATIVE EXPENSES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfGeneralAndAdministrativeExpenseExplanatory
197	2110100 - Disclosure - CARE AND MAINTENANCE EXPENSES	Network	*	*	http://klgold.com/role/CareAndMaintenanceExpenses
198	Implied Table	Table	*	*	implied:Table
199	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
200	CARE AND MAINTENANCE EXPENSES	Concept (Text Block (HTML))	For Period		kl:DisclosureOfRepairsAndMaintenanceExpenseExplanatoryTextBlock
201	2111100 - Disclosure - OTHER INCOME, NET	Network	*	*	http://klgold.com/role/OtherIncomeNet
202	Implied Table	Table	*	*	implied:Table
203	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
204	OTHER INCOME, NET	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory
205	2112100 - Disclosure - FINANCE ITEMS	Network	*	*	http://klgold.com/role/FinanceItems
206	Implied Table	Table	*	*	implied:Table
207	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
208	FINANCE ITEMS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory
209	2113100 - Disclosure - INCOME TAXES	Network	*	*	http://klgold.com/role/IncomeTaxes
210	Implied Table	Table	*	*	implied:Table
211	Income Taxes [Abstract]	Abstract			kl:IncomeTaxesAbstract
212	INCOME TAXES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIncomeTaxExplanatory
213	2114100 - Disclosure - ACCOUNTS RECEIVABLE	Network	*	*	http://klgold.com/role/AccountsReceivable
214	Implied Table	Table	*	*	implied:Table
215	Trade and other current receivables [abstract]	Abstract			ifrs-full:TradeAndOtherCurrentReceivablesAbstract
216	ACCOUNTS RECEIVABLE	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
217	2115100 - Disclosure - INVENTORIES	Network	*	*	http://klgold.com/role/Inventories
218	Implied Table	Table	*	*	implied:Table
219	Disclosure Of Inventories [Abstract]	Abstract			kl:DisclosureOfInventoriesAbstract
220	INVENTORIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInventoriesExplanatory
221	2116100 - Disclosure - OTHER LONG-TERM ASSETS	Network	*	*	http://klgold.com/role/OtherLongTermAssets
222	Implied Table	Table	*	*	implied:Table
223	Other Long-Term Assets [Abstract]	Abstract			kl:OtherLongTermAssetsAbstract
224	OTHER LONG-TERM ASSETS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAvailableforsaleAssetsExplanatory
225	2117100 - Disclosure - RESTRICTED CASH	Network	*	*	http://klgold.com/role/RestrictedCash
226	Implied Table	Table	*	*	implied:Table
227	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
228	RESTRICTED CASH	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRestrictedCashAndCashEquivalentsExplanatory
229	2118100 - Disclosure - MINING INTERESTS AND PLANT AND EQUIPMENT	Network	*	*	http://klgold.com/role/MiningInterestsAndPlantAndEquipment
230	Implied Table	Table	*	*	implied:Table
231	Disclosure of detailed information about property, plant and equipment [abstract]	Abstract			ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
232	MINING INTERESTS AND PLANT AND EQUIPMENT	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
233	Disclosure of detailed information about property, plant and equipment	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
234	2119100 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	Network	*	*	http://klgold.com/role/AccountsPayableAndAccruedLiabilities
235	Implied Table	Table	*	*	implied:Table
236	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
237	ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
238	2120100 - Disclosure - FINANCE LEASES	Network	*	*	http://klgold.com/role/FinanceLeases
239	Implied Table	Table	*	*	implied:Table
240	Presentation of leases for lessee [abstract]	Abstract			ifrs-full:PresentationOfLeasesForLesseeAbstract
241	FINANCE LEASES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfLeasesExplanatory
242	2121100 - Disclosure - SHARE BASED LIABILITIES (Notes)	Network	*	*	http://klgold.com/role/ShareBasedLiabilitiesNotes
243	Implied Table	Table	*	*	implied:Table
244	Share-based Payment Arrangements [Abstract]	Abstract			kl:SharebasedPaymentArrangementsAbstract
245	SHARE BASED LIABILITIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
246	2122100 - Disclosure - CONVERTIBLE DEBENTURES	Network	*	*	http://klgold.com/role/ConvertibleDebentures
247	Implied Table	Table	*	*	implied:Table
248	Financial Instruments [Abstract]	Abstract			kl:FinancialInstrumentsAbstract
249	CONVERTIBLE DEBENTURES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfBorrowingsExplanatory
250	2123100 - Disclosure - PROVISIONS	Network	*	*	http://klgold.com/role/Provisions
251	Implied Table	Table	*	*	implied:Table
252	Disclosure of other provisions, contingent liabilities and contingent assets [Abstract]	Abstract			kl:DisclosureofotherprovisionscontingentliabilitiesandcontingentassetsAbstract
253	PROVISIONS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfProvisionsExplanatory
254	2124100 - Disclosure - SHAREHOLDERS' EQUITY	Network	*	*	http://klgold.com/role/ShareholdersEquity
255	Implied Table	Table	*	*	implied:Table
256	Share Capital, Reserves And Other Equity Interest [Abstract]	Abstract			kl:ShareCapitalReservesAndOtherEquityInterestAbstract
257	SHAREHOLDERS'S EQUITY	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
258	2125100 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION	Network	*	*	http://klgold.com/role/SupplementalCashFlowInformation
259	Implied Table	Table	*	*	implied:Table
260	Cash Flow Statement [Abstract]	Abstract			kl:CashFlowStatementAbstract
261	SUPPLEMENTAL CASH FLOW INFORMATION	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCashFlowStatementExplanatory
262	2126100 - Disclosure - OPERATING SEGMENTS	Network	*	*	http://klgold.com/role/OperatingSegments
263	Implied Table	Table	*	*	implied:Table
264	Disclosure of operating segments [abstract]	Abstract			ifrs-full:DisclosureOfOperatingSegmentsAbstract
265	OPERATING SEGMENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
266	2127100 - Disclosure - CAPITAL RISK MANAGEMENT	Network	*	*	http://klgold.com/role/CapitalRiskManagement
267	Implied Table	Table	*	*	implied:Table
268	Disclosure of nature and extent of risks arising from financial instruments [abstract]	Abstract			ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsAbstract
269	CAPITAL RISK MANAGEMENT	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
270	2128100 - Disclosure - FINANCIAL INSTRUMENTS	Network	*	*	http://klgold.com/role/FinancialInstruments
271	Implied Table	Table	*	*	implied:Table
272	Financial Instruments [Abstract]	Abstract			kl:FinancialInstrumentsAbstract
273	FINANCIAL INSTRUMENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinancialInstrumentsExplanatory
274	2129100 - Disclosure - COMMITMENTS AND CONTRACTUAL OBLIGATIONS	Network	*	*	http://klgold.com/role/CommitmentsAndContractualObligations
275	Implied Table	Table	*	*	implied:Table
276	Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]	Abstract			kl:OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract
277	COMMITMENTS AND CONTRACTUAL OBLIGATIONS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCommitmentsExplanatory
278	2129100 - Disclosure - RELATED PARTY TRANSACTIONS	Network	*	*	http://klgold.com/role/RelatedPartyTransactions
279	Implied Table	Table	*	*	implied:Table
280	Related party transactions [abstract]	Abstract			ifrs-full:RelatedPartyTransactionsAbstract
281	RELATED PARTY TRANSACTIONS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRelatedPartyExplanatory
282	2130100 - Disclosure - DISPOSITION OF STALWELL MINE	Network	*	*	http://klgold.com/role/DispositionOfStalwellMine
283	Implied Table	Table	*	*	implied:Table
284	Non-current Assets Held For Sale And Discontinued Operations [Abstract]	Abstract			kl:NoncurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract
285	DISPOSITION OF STALWELL MINE	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory
286	2131100 - Disclosure - SUBSEQUENT EVENTS	Network	*	*	http://klgold.com/role/SubsequentEvents
287	Implied Table	Table	*	*	implied:Table
288	Subsequent Events1 [Abstract]	Abstract			kl:SubsequentEvents1Abstract
289	SUBSEQUENT EVENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
290	2203201 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies)	Network	*	*	http://klgold.com/role/SignificantAccountingPoliciesPolicies
291	Implied Table	Table	*	*	implied:Table
292	List Of Accounting Policies [Abstract]	Abstract			kl:ListOfAccountingPoliciesAbstract
293	Statement of compliance	Concept (Text Block (HTML))	For Period		ifrs-full:StatementOfIFRSCompliance
294	Basis of presentation and consolidation	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
295	Foreign currency translation	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
296	Business combinations	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory
297	Revenue recognition	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
298	Financial Instruments	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory
299	Cash and cash equivalents	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
300	Inventories and stockpiled ore	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
301	Mining interest	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForMiningAssetsExplanatory
302	Borrowing costs	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
303	Impairment of non-financial assets	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
304	Leases	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
305	Share based payments	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
306	Pension plans	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
307	Deferred income tax	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory
308	Share capital	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
309	Flow through shares	Concept (Text Block (HTML))	For Period		kl:DescriptionOfAccountingPolicyForFlowThroughSharesExplanatoryPolicyTextBlock
310	Provisions	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
311	Earnings (loss) per share	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
312	Discontinued operations	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory
313	Adoption of New Accounting Standards Issued But Not Effective	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
314	2303302 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables)	Network	*	*	http://klgold.com/role/SignificantAccountingPoliciesTables
315	Implied Table	Table	*	*	implied:Table
316	List Of Accounting Policies [Abstract]	Abstract			kl:ListOfAccountingPoliciesAbstract
317	Disclosure of interests in subsidiaries	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory
318	Disclosure of detailed information about property, plant and equipment	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
319	2305301 - Disclosure - ADOPTION OF NEW ACCOUNTING STANDARDS (Tables)	Network	*	*	http://klgold.com/role/AdoptionOfNewAccountingStandardsTables
320	Implied Table	Table	*	*	implied:Table
321	Accounting Policies, Changes In Accounting Estimates And Errors [Abstract]	Abstract			kl:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
322	Explanation of initial application of IFRS 9	Concept (Text Block (HTML))	For Period		ifrs-full:ExplanationOfFirsttimeAdoptionOfIFRS9
323	2308301 - Disclosure - PRODUCTION COSTS (Tables)	Network	*	*	http://klgold.com/role/ProductionCostsTables
324	Implied Table	Table	*	*	implied:Table
325	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
326	Disclosure of detailed information of production costs	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDetailedInformationOfCostOfSalesTableTextBlock
327	2309301 - Disclosure - GENERAL AND ADMINISTRATIVE EXPENSES (Tables)	Network	*	*	http://klgold.com/role/GeneralAndAdministrativeExpensesTables
328	Implied Table	Table	*	*	implied:Table
329	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
330	Disclosure general and administrative expenses	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDetailedInformationOfGeneralAndAdministrativeExpenseTableTextBlock
331	2310301 - Disclosure - CARE AND MAINTENANCE EXPENSES (Tables)	Network	*	*	http://klgold.com/role/CareAndMaintenanceExpensesTables
332	Implied Table	Table	*	*	implied:Table
333	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
334	Disclosure of detailed information of care and maintenance expenses	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDetailedInformationOfRepairsAndMaintenanceExpenseTableTextBlock
335	2311301 - Disclosure - OTHER INCOME, NET (Tables)	Network	*	*	http://klgold.com/role/OtherIncomeNetTables
336	Implied Table	Table	*	*	implied:Table
337	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
338	Schedule of other income (loss)	Concept (Text Block (HTML))	For Period		kl:ScheduleOfOtherIncomeLossTableTextBlock
339	2312301 - Disclosure - FINANCE ITEMS (Tables)	Network	*	*	http://klgold.com/role/FinanceItemsTables
340	Implied Table	Table	*	*	implied:Table
341	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
342	Schedule of finance income and expense	Concept (Text Block (HTML))	For Period		kl:DisclosureOfFinanceIncomeCostsExplanatoryTableTextBlock
343	2313301 - Disclosure - INCOME TAXES (Tables)	Network	*	*	http://klgold.com/role/IncomeTaxesTables
344	Implied Table	Table	*	*	implied:Table
345	Income Taxes [Abstract]	Abstract			kl:IncomeTaxesAbstract
346	Disclosure of reconciliation of income tax expense	Concept (Text Block (HTML))	For Period		kl:DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock
347	Disclosure of temporary difference, unused tax losses and unused tax credits	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
348	Disclosure of deductible temporary differences for which no deferred tax asset is recognised	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognisedTableTextBlock
349	Disclosure of tax credit carryforwards	Concept (Text Block (HTML))	For Period		kl:DisclosureOfTaxCreditCarryforwardsTableTextBlock
350	2314301 - Disclosure - ACCOUNTS RECEIVABLE (Tables)	Network	*	*	http://klgold.com/role/AccountsReceivableTables
351	Implied Table	Table	*	*	implied:Table
352	Trade and other current receivables [abstract]	Abstract			ifrs-full:TradeAndOtherCurrentReceivablesAbstract
353	Disclosure of detailed information about accounts receivable	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDetailedInformationAboutTradeReceivablesTableTextBlock
354	2315301 - Disclosure - INVENTORIES (Tables)	Network	*	*	http://klgold.com/role/InventoriesTables
355	Implied Table	Table	*	*	implied:Table
356	Disclosure Of Inventories [Abstract]	Abstract			kl:DisclosureOfInventoriesAbstract
357	Disclosure detailed information about inventories	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDetailedInformationAboutInventoriesTableTextBlock
358	2316301 - Disclosure - OTHER LONG-TERM ASSETS (Tables)	Network	*	*	http://klgold.com/role/OtherLongTermAssetsTables
359	Implied Table	Table	*	*	implied:Table
360	Other Long-Term Assets [Abstract]	Abstract			kl:OtherLongTermAssetsAbstract
361	Disclosure detailed information about other noncurrent assets	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDetailedInformationAboutOtherNoncurrentAssetsTableTextBlock
362	Disclosure detailed information about changes in equity investments	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDetailedInformationAboutMovementsInAvailableForSaleInvestmentsTableTextBlock
363	Disclosure of fair value of investments in and warrants held	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFairValueOfEachInvestmentInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncomeExplanatory
364	Disclosure of inputs used to value warrant investments	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory
365	2317301 - Disclosure - RESTRICTED CASH (Tables)	Network	*	*	http://klgold.com/role/RestrictedCashTables
366	Implied Table	Table	*	*	implied:Table
367	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
368	Schedule of restricted cash	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDetailedInformationAboutRestrictedCashTableTextBlock
369	2318301 - Disclosure - MINING INTERESTS AND PLANT AND EQUIPMENT (Tables)	Network	*	*	http://klgold.com/role/MiningInterestsAndPlantAndEquipmentTables
370	Implied Table	Table	*	*	implied:Table
371	Disclosure of detailed information about property, plant and equipment [abstract]	Abstract			ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
372	Disclosure of changes in mining interests, plant and equipment	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
373	2319301 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Tables)	Network	*	*	http://klgold.com/role/AccountsPayableAndAccruedLiabilitiesTables
374	Implied Table	Table	*	*	implied:Table
375	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
376	Schedules of accounts payable, accrued liabilities, and their currency denominations	Concept (Text Block (HTML))	For Period		kl:ScheduleOfAccountsPayableAndAccruedLiabilities1TableTextBlock
377	2320301 - Disclosure - FINANCE LEASES (Tables)	Network	*	*	http://klgold.com/role/FinanceLeasesTables
378	Implied Table	Table	*	*	implied:Table
379	Presentation of leases for lessee [abstract]	Abstract			ifrs-full:PresentationOfLeasesForLesseeAbstract
380	Schedule of the total minimum loan payments due for finance lease obligations	Concept (Text Block (HTML))	For Period		kl:DisclosureOfMaturityAnalysisOfFinanceLeasePaymentsPayableExplanatoryTableTextBlock
381	2321301 - Disclosure - SHARE BASED LIABILITIES (Tables)	Network	*	*	http://klgold.com/role/ShareBasedLiabilitiesTables
382	Implied Table	Table	*	*	implied:Table
383	Share-based Payment Arrangements [Abstract]	Abstract			kl:SharebasedPaymentArrangementsAbstract
384	Disclosure of number of units outstanding during period	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory
385	Explanation of effect of share-based payments on entity's financial position	Concept (Text Block (HTML))	For Period		ifrs-full:ExplanationOfEffectOfSharebasedPaymentsOnFinancialPositions
386	2322301 - Disclosure - CONVERTIBLE DEBENTURES (Tables)	Network	*	*	http://klgold.com/role/ConvertibleDebenturesTables
387	Implied Table	Table	*	*	implied:Table
388	Financial Instruments [Abstract]	Abstract			kl:FinancialInstrumentsAbstract
389	Disclosure of detailed information about borrowings	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
390	2323301 - Disclosure - PROVISIONS (Tables)	Network	*	*	http://klgold.com/role/ProvisionsTables
391	Implied Table	Table	*	*	implied:Table
392	Disclosure of other provisions, contingent liabilities and contingent assets [Abstract]	Abstract			kl:DisclosureofotherprovisionscontingentliabilitiesandcontingentassetsAbstract
393	Disclosure of detailed information about provisions	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDetailedInformationAboutProvisionsTableTextBlock
394	Disclosure of changes in provision	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherProvisionsExplanatory
395	2324301 - Disclosure - SHAREHOLDERS' EQUITY (Tables)	Network	*	*	http://klgold.com/role/ShareholdersEquityTables
396	Implied Table	Table	*	*	implied:Table
397	Share Capital, Reserves And Other Equity Interest [Abstract]	Abstract			kl:ShareCapitalReservesAndOtherEquityInterestAbstract
398	Disclosure of number and weighted average exercise prices of share options	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory
399	Disclosure of range of exercise prices of outstanding share options	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatory
400	Disclosure of number of units outstanding during period	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory
401	Explanation of effect of share-based payments on entity's income	Concept (Text Block (HTML))	For Period		ifrs-full:ExplanationOfEffectOfSharebasedPaymentsOnProfitOrLoss
402	Earnings per share	Concept (Text Block (HTML))	For Period		ifrs-full:EarningsPerShareExplanatory
403	Disclosure of weighted average number of common shares	Concept (Text Block (HTML))	For Period		kl:DisclosureOfWeightedAverageNumberofSharesTableTextBlock
404	Disclosure of anti-dilutive securities excluded from computation of earnings per share	Concept (Text Block (HTML))	For Period		kl:DisclosureOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTableTextBlock
405	2325301 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Tables)	Network	*	*	http://klgold.com/role/SupplementalCashFlowInformationTables
406	Implied Table	Table	*	*	implied:Table
407	Cash Flow Statement [Abstract]	Abstract			kl:CashFlowStatementAbstract
408	Disclosure of detailed information about cash flow statement	Concept (Text Block (HTML))	For Period		kl:DisclosureOfDetailedInformationAboutCashFlowStatementTableTextBlock
409	2326301 - Disclosure - OPERATING SEGMENTS (Tables)	Network	*	*	http://klgold.com/role/OperatingSegmentsTables
410	Implied Table	Table	*	*	implied:Table
411	Disclosure of operating segments [abstract]	Abstract			ifrs-full:DisclosureOfOperatingSegmentsAbstract
412	Disclosure of operating segments	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOperatingSegmentsExplanatory
413	Disclosure of sales by geographical areas	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfGeographicalAreasExplanatory
414	Disclosure of sales to individual customers	Concept (Text Block (HTML))	For Period		ifrs-full:SummaryQuantitativeDataAboutEntitysExposureToRisk
415	2327301 - Disclosure - CAPITAL RISK MANAGEMENT (Tables)	Network	*	*	http://klgold.com/role/CapitalRiskManagementTables
416	Implied Table	Table	*	*	implied:Table
417	Disclosure of nature and extent of risks arising from financial instruments [abstract]	Abstract			ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsAbstract
418	Summary the Company's capital	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIssuedCapitalExplanatory
419	2328301 - Disclosure - FINANCIAL INSTRUMENTS (Tables)	Network	*	*	http://klgold.com/role/FinancialInstrumentsTables
420	Implied Table	Table	*	*	implied:Table
421	Financial Instruments [Abstract]	Abstract			kl:FinancialInstrumentsAbstract
422	Disclosure of financial assets	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinancialAssetsExplanatory
423	Disclosure of financial liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory
424	Disclosure of fair value measurement of assets	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory
425	Disclosure of nature and extent of risks arising from financial instruments	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsExplanatory
426	2329301 - Disclosure - RELATED PARTY TRANSACTIONS (Tables)	Network	*	*	http://klgold.com/role/RelatedPartyTransactionsTables
427	Implied Table	Table	*	*	implied:Table
428	Related Party [Abstract]	Abstract			kl:RelatedPartyAbstract
429	Disclosure of transactions between related parties	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
430	2330301 - Disclosure - DISPOSITION OF STALWELL MINE (Tables)	Network	*	*	http://klgold.com/role/DispositionOfStalwellMineTables
431	Implied Table	Table	*	*	implied:Table
432	Non-current Assets Held For Sale And Discontinued Operations [Abstract]	Abstract			kl:NoncurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract
433	Disclosure of discontinued operations	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDiscontinuedOperationsExplanatory
434	2401401 - Disclosure - DESCRIPTION OF BUSINESS AND NATURE OF OPERATIONS (Details)	Network	*	*	http://klgold.com/role/DescriptionOfBusinessAndNatureOfOperationsDetails
435	Implied Table	Table	*	*	implied:Table
436	Management Commentary [Abstract]	Abstract			kl:ManagementCommentaryAbstract
437	Number of wholly-owned operating mines	Concept (Integer)	For Period		kl:NumberOfWhollyOwnedOperatingMines
438	2403403 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Subsidiaries (Details)	Network	*	*	http://klgold.com/role/SignificantAccountingPoliciesSubsidiariesDetails
439	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
440	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
441	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
442	Kirkland Lake Gold Inc.	Member			kl:KirklandLakeGoldIncMember
443	St Andrew Goldfields Ltd.	Member			kl:StAndrewsGoldfieldsLtdMember
444	Crocodile Gold Inc.	Member			kl:CrocodileGoldIncMember
445	Newmarket Gold Victorian Holdings Pty Ltd.	Member			kl:NewmarketGoldVictorianHoldingsPtyLtdMember
446	Fosterville Gold Mine Pty Ltd.	Member			kl:FostervilleGoldMinePtyLtdMember
447	Newmarket Gold NT Holdings Pty Ltd.	Member			kl:NewmarketGoldNTHoldingsPtyLtdMember
448	NT Mining Operations Pty Ltd.	Member			kl:NTMiningOperationsPtyLtdMember
449	Kirkland Lake Gold (Barbados) Corporation	Member			kl:KirklandLakeGoldBarbadosCorporationMember
450	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
451	Proportion of Ownership Interest	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
452	2403404 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Property and equipment (Details)	Network	*	*	http://klgold.com/role/SignificantAccountingPoliciesPropertyAndEquipmentDetails
453	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
454	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
455	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
456	Vehicles and mobile equipment	Member			ifrs-full:VehiclesMember
457	Office equipment	Member			ifrs-full:OfficeEquipmentMember
458	Computer equipment	Member			ifrs-full:ComputerEquipmentMember
459	Range [axis]	Axis			ifrs-full:RangeAxis
460	Ranges [member]	Member			ifrs-full:RangesMember
461	Bottom of range	Member			ifrs-full:BottomOfRangeMember
462	Top of range	Member			ifrs-full:TopOfRangeMember
463	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
464	Estimated useful lives, period	Concept (xbrli:durationItemType)	For Period		kl:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipmentPeriod
465	2408402 - Disclosure - PRODUCTION COSTS (Details)	Network	*	*	http://klgold.com/role/ProductionCostsDetails
466	Implied Table	Table	*	*	implied:Table
467	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
468	Operating costs	Concept (Monetary)	For Period	Debit	ifrs-full:OperatingExpense
469	Share based payment expense (note 22(b(ii)))	Concept (Monetary)	For Period	Debit	kl:ExpenseFromSharebasedPaymentTransactionsWithEmployeesIncludedInProductionCosts
470	Production costs	Concept (Monetary)	For Period	Debit	ifrs-full:CostOfSales
471	2409402 - Disclosure - GENERAL AND ADMINISTRATIVE EXPENSES (Details)	Network	*	*	http://klgold.com/role/GeneralAndAdministrativeExpensesDetails
472	Implied Table	Table	*	*	implied:Table
473	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
474	General and administrative - other	Concept (Monetary)	For Period	Debit	ifrs-full:GeneralAndAdministrativeExpense
475	Severance payments	Concept (Monetary)	For Period	Debit	ifrs-full:TerminationBenefitsExpense
476	Share based payment expense (note 22(b(ii)))	Concept (Monetary)	For Period	Debit	kl:ExpenseFromSharebasedPaymentTransactionsWithEmployeesIncludedInGeneralAndAdministrativeExpense
477	General and administrative	Concept (Monetary)	For Period	Debit	ifrs-full:SellingGeneralAndAdministrativeExpense
478	2410402 - Disclosure - CARE AND MAINTENANCE EXPENSES (Details)	Network	*	*	http://klgold.com/role/CareAndMaintenanceExpensesDetails
479	Repair And Maintenance Expenses [Table]	Table	*	*	kl:RepairAndMaintenanceExpensesTable
480	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
481	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
482	Cosmo mine	Member			kl:CosmoMineMember
483	Holloway mine	Member			kl:HollowayMineMember
484	Hislop mine	Member			kl:StAndrewsGoldfieldsLtdMember
485	Repair And Maintenance Expenses [Line Items]	LineItems			kl:RepairAndMaintenanceExpensesLineItems
486	Care and maintenance	Concept (Monetary)	For Period	Debit	ifrs-full:RepairsAndMaintenanceExpense
487	2411402 - Disclosure - OTHER INCOME, NET (Details)	Network	*	*	http://klgold.com/role/OtherIncomeNetDetails
488	Implied Table	Table	*	*	implied:Table
489	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
490	Loss on disposal of non-core mining interests and plant and equipment	Concept (Monetary)	For Period	Debit	ifrs-full:LossesOnDisposalsOfPropertyPlantAndEquipment
491	Change in fair value of warrant investments (note 14)	Concept (Monetary)	For Period		ifrs-full:GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssets
492	Realized gain on sale of JDS Silver	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnAvailableforsaleFinancialAssets
493	Recognition of deferred premium on flow through shares	Concept (Monetary)	For Period	Debit	kl:AmortisationDeferredPremiumOnFlowThroughShares
494	Unrealized and realized foreign exchange gain (loss), net	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
495	Other income	Concept (Monetary)	For Period	Debit	kl:OtherLossNet
496	Other income, net	Concept (Monetary)	For Period	Credit	ifrs-full:OtherGainsLosses
497	2412402 - Disclosure - FINANCE ITEMS (Details)	Network	*	*	http://klgold.com/role/FinanceItemsDetails
498	Implied Table	Table	*	*	implied:Table
499	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
500	Interest income on bank deposits	Concept (Monetary)	For Period	Credit	ifrs-full:InterestIncomeOnDeposits
501	Finance income	Concept (Monetary)	For Period	Credit	ifrs-full:FinanceIncome
502	Unwinding of discount on convertible debentures (note 20)	Concept (Monetary)	For Period	Debit	kl:ExpenseDueToUnwindingOfDiscountOnConvertibleDebt
503	Interest paid on convertible debentures	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpenseOnDebtInstrumentsIssued
504	Interest on finance leases and other loans	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpenseOnLeaseLiabilities
505	Finance fees and bank charges	Concept (Monetary)	For Period	Debit	ifrs-full:BankAndSimilarCharges
506	Unwinding of discount on rehabilitation provision (note 21)	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseDueToUnwindingOfDiscountOnProvisions
507	Finance costs	Concept (Monetary)	For Period	Debit	ifrs-full:FinanceCosts
508	2413402 - Disclosure - INCOME TAXES - Reconciliation of Income Tax Rate (Details)	Network	*	*	http://klgold.com/role/IncomeTaxesReconciliationOfIncomeTaxRateDetails
509	Implied Table	Table	*	*	implied:Table
510	Income Taxes [Abstract]	Abstract			kl:IncomeTaxesAbstract
511	Earnings before income taxes	Concept (Monetary)	For Period	Credit	ifrs-full:AccountingProfit
512	Computed income tax expense at Canadian statutory rates (25%)	Concept (Monetary)	For Period	Debit	ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
513	Non-deductible expenses/ Non-taxable (income)	Concept (Monetary)	For Period	Debit	kl:TaxEffectOfStatutoryPermanentDifferencesExpensesIncome
514	Foreign tax rate differential	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectOfForeignTaxRates
515	Current and deferred Ontario Mining Tax	Concept (Monetary)	For Period	Debit	kl:TaxEffectOfDomesticMiningTax
516	Renouncement of flow through expenditures	Concept (Monetary)	For Period	Debit	kl:TaxEffectOfRenouncementOfFlowThroughExpenditures
517	Revision in estimates	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectFromChangeInTaxRate
518	Recognition of previously unrecognized deferred tax assets	Concept (Monetary)	For Period	Credit	ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceDeferredTaxExpense
519	Withholding taxes	Concept (Monetary)	For Period	Debit	kl:TaxEffectOfWithholdingTax
520	Other	Concept (Monetary)	For Period	Debit	ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
521	Income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
522	Current income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:CurrentTaxExpenseIncome
523	Deferred tax (recovery) expense	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncome
524	Applicable tax rate	Concept (Percent)	For Period		ifrs-full:ApplicableTaxRate
525	2413403 - Disclosure - INCOME TAXES - Narrative (Details)	Network	*	*	http://klgold.com/role/IncomeTaxesNarrativeDetails
526	Implied Table	Table	*	*	implied:Table
527	Income Taxes [Abstract]	Abstract			kl:IncomeTaxesAbstract
528	Effective tax rate	Concept (Percent)	For Period		ifrs-full:AverageEffectiveTaxRate
529	Recognition of previously unrecognized deferred tax assets	Concept (Monetary)	For Period	Credit	ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceDeferredTaxExpense
530	Temporary differences associated with investments in subsidiaries for which deferred tax liabilities have not been recognised	Concept (Monetary)	As Of		ifrs-full:TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures
531	2413404 - Disclosure - INCOME TAXES - Temporary Differences (Details)	Network	*	*	http://klgold.com/role/IncomeTaxesTemporaryDifferencesDetails
532	Disclosure of temporary difference, unused tax losses and unused tax credits [table]	Table	*	*	ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
533	Temporary difference, unused tax losses and unused tax credits [axis]	Axis			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
534	Temporary difference, unused tax losses and unused tax credits [member]	Member			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
535	Mining interests and plant and equipment	Member			kl:MiningInterestsAndPlantAndEquipmentRelatedTemporaryDifferencesMember
536	Environmental rehabilitation provision	Member			kl:EnvironmentalRehabilitationProvisionRelatedTemporaryDifferencesMember
537	Financing costs	Member			kl:FinancingCostsRelatedTemporaryDifferencesMember
538	Employee provisions	Member			kl:OntarioMiningTaxRelatedTemporaryDifferencesMember
539	Loss carry forwards	Member			ifrs-full:UnusedTaxLossesMember
540	Inventory	Member			kl:InventoryRelatedTemporaryDifferencesMember
541	Mark to market adjustments	Member			kl:MarkToMarketAdjustmentTemporaryDifferencesMember
542	Corporate minimum tax credits	Member			kl:CorporateMinimumTaxCreditsRelatedTemporaryDifferencesMember
543	Deferred revenue	Member			kl:DeferredRevenueRelatedTemporaryDifferencesMember
544	Employee provisions	Member			kl:EmployeeProvisionsRelatedTemporaryDifferencesMember
545	Other	Member			ifrs-full:OtherTemporaryDifferencesMember
546	Disclosure of temporary difference, unused tax losses and unused tax credits [line items]	LineItems			ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
547	Net deferred income tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:DeferredTaxAssets
548	Net deferred income tax liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilities
549	2413405 - Disclosure - INCOME TAXES - Changes in Deferred Tax Liabilities (Details)	Network	*	*	http://klgold.com/role/IncomeTaxesChangesInDeferredTaxLiabilitiesDetails
550	Implied Table	Table	*	*	implied:Table
551	Income Taxes [Abstract]	Abstract			kl:IncomeTaxesAbstract
552	Reconciliation of changes in deferred tax liability (asset) [abstract]	Abstract			ifrs-full:ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract
553	Balance, beginning of year	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilityAsset
554	Recognized in net earnings from continuing operations	Concept (Monetary)	For Period		ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
555	Recognized in equity	Concept (Monetary)	For Period		ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
556	Recognized in discontinued operations	Concept (Monetary)	For Period	Credit	kl:DeferredTaxExpenseIncomeRecognisedInDiscontinuedOperations
557	Foreign currency translation in other comprehensive income	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset
558	Net deferred tax liabilities, end of year	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilityAsset
559	2413406 - Disclosure - INCOME TAXES - Temporary Differences Where No Deferred Tax Asset is Recognized (Details)	Network	*	*	http://klgold.com/role/IncomeTaxesTemporaryDifferencesWhereNoDeferredTaxAssetIsRecognizedDetails
560	Disclosure of temporary difference, unused tax losses and unused tax credits [table]	Table	*	*	ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
561	Temporary difference, unused tax losses and unused tax credits [axis]	Axis			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
562	Temporary difference, unused tax losses and unused tax credits [member]	Member			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
563	Capital loss carryforwards	Member			kl:CapitalLossCarryforwardTemporaryDifferencesMember
564	Investment tax credits	Member			kl:InvestmentTaxCreditsRelatedTemporaryDifferencesMember
565	Mining interests	Member			kl:MiningInterestRelatedTemporaryDifferencesMember
566	Australian royalty tax	Member			kl:ForeignRoyaltyTaxRelatedTemporaryDifferencesMember
567	Disclosure of temporary difference, unused tax losses and unused tax credits [line items]	LineItems			ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
568	Deferred tax assets that have not been recognized	Concept (Monetary)	As Of		ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
569	2413407 - Disclosure - INCOME TAXES - Tax Credit Carryforwards (Details)	Network	*	*	http://klgold.com/role/IncomeTaxesTaxCreditCarryforwardsDetails
570	Tax Credit Carryforward 1 [Table]	Table	*	*	kl:TaxCreditCarryforward1Table
571	Tax Credit Carryforward 1 [Axis]	Axis			kl:TaxCreditCarryforward1Axis
572	Tax Credit Carryforward 1 [Domain]	Member			kl:TaxCreditCarryforward1Domain
573	Non-capital losses	Member			kl:NonCapitalLossCarryforwardMember
574	Capital losses	Member			kl:CapitalLossCarryforward1Member
575	Tax basis of mining interest	Member			kl:TaxBasisOfMiningInterestCarryforwardMember
576	Tax basis of plant and equipment	Member			kl:TaxBasisofPlantAndEquipmentCarryforwardMember
577	Financing costs	Member			kl:FinancingCostCarryforwardMember
578	Income Tax Authority, Name 1 [Axis]	Axis			kl:IncomeTaxAuthorityName1Axis
579	Income Tax Authority, Name 1 [Domain]	Member			kl:IncomeTaxAuthorityName1Domain
580	Canada	Member			kl:CanadaRevenueAgency1Member
581	Australia	Member			kl:AustralianTaxationOffice1Member
582	Tax Credit Carryforward 1 [Line Items]	LineItems			kl:TaxCreditCarryforward1LineItems
583	Income tax carryforwards	Concept (Monetary)	As Of	Debit	kl:TaxCreditCarryforwardAmount1
584	2414402 - Disclosure - ACCOUNTS RECEIVABLE (Details)	Network	*	*	http://klgold.com/role/AccountsReceivableDetails
585	Trade Receivables [Table]	Table	*	*	kl:TradeReceivablesTable
586	Range [axis]	Axis			ifrs-full:RangeAxis
587	Ranges [member]	Member			ifrs-full:RangesMember
588	Bottom of range	Member			ifrs-full:BottomOfRangeMember
589	Top of range	Member			ifrs-full:TopOfRangeMember
590	Trade Receivables [Line Items]	LineItems			kl:TradeReceivablesLineItems
591	Trade receivables	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentTradeReceivables
592	Sales tax and other statutory receivables	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentReceivablesFromTaxesOtherThanIncomeTax
593	Other receivables	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentReceivables
594	Trade and other current receivables	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
595	Settlement period on gold sales	Concept (xbrli:durationItemType)	For Period		kl:TradeReceivablesSettlementPeriodOnGoldSales
596	2415402 - Disclosure - INVENTORIES (Details)	Network	*	*	http://klgold.com/role/InventoriesDetails
597	Implied Table	Table	*	*	implied:Table
598	Disclosure Of Inventories [Abstract]	Abstract			kl:DisclosureOfInventoriesAbstract
599	Gold dor�	Concept (Monetary)	As Of	Debit	ifrs-full:RawMaterials
600	Gold in circuit	Concept (Monetary)	As Of	Debit	ifrs-full:WorkInProgress
601	Ore stockpiles	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentOreStockpiles
602	Supplies and consumables	Concept (Monetary)	As Of	Debit	ifrs-full:ProductionSupplies
603	Current inventories	Concept (Monetary)	As Of	Debit	ifrs-full:Inventories
604	Operating costs	Concept (Monetary)	For Period	Debit	ifrs-full:OperatingExpense
605	Inventory write-downs	Concept (Monetary)	For Period		ifrs-full:InventoryWritedown2011
606	Reversal of inventory write-downs	Concept (Monetary)	For Period		ifrs-full:ReversalOfInventoryWritedown
607	2416402 - Disclosure - OTHER LONG-TERM ASSETS - Components of Other Long-Term Assets (Details) (Details)	Network	*	*	http://klgold.com/role/OtherLongTermAssetsComponentsOfOtherLongTermAssetsDetailsDetails
608	Implied Table	Table	*	*	implied:Table
609	Other Long-Term Assets [Abstract]	Abstract			kl:OtherLongTermAssetsAbstract
610	Investments in equity securities	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentFinancialAssetsAvailableforsale
611	Warrant investments	Concept (Monetary)	As Of	Debit	kl:NoncurrentFinancialAssetsWarrants
612	NSR Royalty from Stawell Mine sale (note 29)	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentReceivablesFromSaleOfProperties
613	Deposits and other	Concept (Monetary)	As Of	Debit	kl:MiscellaneousOtherNoncurrentFinancialAssets
614	Other long-term assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNoncurrentFinancialAssets
615	2416403 - Disclosure - OTHER LONG-TERM ASSETS - Changes in Other Long-Term Assets (Details)	Network	*	*	http://klgold.com/role/OtherLongTermAssetsChangesInOtherLongTermAssetsDetails
616	Implied Table	Table	*	*	implied:Table
617	Other Long-Term Assets [Abstract]	Abstract			kl:OtherLongTermAssetsAbstract
618	Balance, beginning of year	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentFinancialAssetsAvailableforsale
619	Acquisition of investments	Concept (Monetary)	For Period	Debit	kl:AcquisitionsOfInvestmentsNoncurrentFinancialAssetsAvailableForSale
620	Disposition of investments	Concept (Monetary)	For Period	Credit	kl:DispositionOfInvestmentsNoncurrentFinancialAssetsAvailableForSale
621	Unrealized and realized gain (loss)	Concept (Monetary)	For Period	Debit	kl:GainsLossesOnFairValueAdjustmentNoncurrentFinancialAssetsAvailableForSale
622	Foreign currency translation	Concept (Monetary)	For Period	Debit	kl:IncreaseDecreaseThroughNetExchangeDifferencesNoncurrentFinancialAssetsAvailableForSale
623	Investments in equity securities, end of year	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentFinancialAssetsAvailableforsale
624	2416404 - Disclosure - OTHER LONG-TERM ASSETS - Fair Market Value of the Investments and Warrants Held (Details)	Network	*	*	http://klgold.com/role/OtherLongTermAssetsFairMarketValueOfInvestmentsAndWarrantsHeldDetails
625	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
626	Valuation techniques used in fair value measurement [axis]	Axis			ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
627	Valuation techniques [member]	Member			ifrs-full:ValuationTechniquesMember
628	Black Scholes	Member			kl:BlackScholesMember
629	Barrier Option Pricing	Member			kl:BarrierOptionPricingMember
630	Classes of financial assets [axis]	Axis			ifrs-full:ClassesOfFinancialAssetsAxis
631	Financial assets, class [member]	Member			ifrs-full:FinancialAssetsMember
632	Investments in equity securities	Member			ifrs-full:EquityInvestmentsMember
633	Warrant investments	Member			kl:WarrantInvestmentsMember
634	Investment [Axis]	Axis			invest:InvestmentAxis
635	Investment [Domain]	Member			invest:InvestmentDomain
636	Bonterra Resources Inc.	Member			kl:BonterraResourcesInc.Member
637	Metanor Resources Inc.	Member			kl:MetanorResourcesInc.Member
638	Osisko Mining Inc.	Member			kl:OsiskoMiningInc.Member
639	Novo Resources Corp.	Member			kl:NovoResourcesCorpMember
640	Other	Member			kl:OtherInvestments1Member
641	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
642	Investments (in shares)	Concept (Shares)	As Of		ifrs-full:SharesInEntityHeldByEntityOrByItsSubsidiariesOrAssociates
643	Reconciliation Of Changes In Financial Assets [Roll Forward]	Abstract			kl:ReconciliationOfChangesInFinancialAssetsRollForward
644	Fair market value, at beginning of period	Concept (Monetary)	As Of	Debit	ifrs-full:FinancialAssetsAtFairValue
645	Purchase/(sales)	Concept (Monetary)	For Period	Debit	kl:FinancialAssetsAdditionsDisposals
646	Transfers	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughTransfersFinancialAssets
647	Unrealized and realized gain/(loss)	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
648	Foreign currency translation	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
649	Fair market value, at end of period	Concept (Monetary)	As Of	Debit	ifrs-full:FinancialAssetsAtFairValue
650	2416405 - Disclosure - OTHER LONG-TERM ASSETS - Inputs Used to Value the Warrant Investments (Details)	Network	*	*	http://klgold.com/role/OtherLongTermAssetsInputsUsedToValueWarrantInvestmentsDetails
651	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
652	Vesting1 [Axis]	Axis			kl:Vesting1Axis
653	Vesting1 [Domain]	Member			kl:Vesting1Domain
654	First Tranche	Member			kl:TrancheOneMember
655	Second Tranche	Member			kl:TrancheTwoMember
656	Investment [Axis]	Axis			invest:InvestmentAxis
657	Investment [Domain]	Member			invest:InvestmentDomain
658	De Grey Mining Ltd.	Member			kl:DeGreyMiningLimitedMember
659	Bonterra Resources Inc.	Member			kl:BonterraResourcesInc.Member
660	Novo Resources Corp.	Member			kl:NovoResourcesCorpMember
661	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
662	Closing share price (in USD per share)	Concept (Share)	As Of		kl:SharePrice1
663	Exercise price (in USD per share)	Concept (Share)	For Period		invest:InvestmentWarrantsExercisePrice
664	Remaining life of the warrants (years)	Concept (xbrli:durationItemType)	For Period		kl:InvestmentWarrantsUsefulLife
665	Volatility	Concept (Percent)	For Period		kl:InvestmentWarrantsVolatility
666	Risk-free rate	Concept (Percent)	For Period		kl:InvestmentWarrantsRiskFreeRate
667	Barrier	Concept (Monetary)	For Period	Debit	kl:InvestmentWarrantsBarrier
668	Rebate	Concept (Monetary)	For Period	Debit	kl:InvestmentWarrantsRebate
669	2416406 - Disclosure - OTHER LONG-TERM ASSETS - Narrative (Details)	Network	*	*	http://klgold.com/role/OtherLongTermAssetsNarrativeDetails
670	Investment [Table]	Table	*	*	invest:InvestmentTable
671	Investment [Axis]	Axis			invest:InvestmentAxis
672	Investment [Domain]	Member			invest:InvestmentDomain
673	Bonterra Resources Inc.	Member			kl:BonterraResourcesInc.Member
674	Osisko Mining Inc.	Member			kl:OsiskoMiningInc.Member
675	Novo Resources Corp.	Member			kl:NovoResourcesCorpMember
676	Business combinations [axis]	Axis			ifrs-full:BusinessCombinationsAxis
677	Entity's total for business combinations [member]	Member			ifrs-full:EntitysTotalForBusinessCombinationsMember
678	Metanor Resources Inc.	Member			kl:MetanorResourcesInc.Member
679	Investment [Line Items]	LineItems			invest:InvestmentLineItems
680	Shares exchange ratio in acquisition	Concept (Pure)	As Of		kl:BusinessCombinationShareExchangeRatio
681	Number of shares in entity held/owned (in shares)	Concept (Shares)	As Of		ifrs-full:SharesInEntityHeldByEntityOrByItsSubsidiariesOrAssociates
682	Number of warrants in entity held/owned (in shares)	Concept (Shares)	As Of		kl:NumberOfWarrantsInEntityHeldByEntityOrByItsSubsidiariesOrAssociates
683	Number of shares called by each warrant (in shares)	Concept (Shares)	As Of		kl:ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight1
684	Share consolidation ratio	Concept (Pure)	For Period		kl:StockholdersEquityNoteStockSplitConversionRatio
685	Investment shares/units acquired (in shares)	Concept (Shares)	As Of		kl:InvestmentAcquiredShares
686	Share price of transaction (in CAD or AUD per share)	Concept (Share)	As Of		kl:SharePrice1
687	Purchase price of investments	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfAvailableforsaleFinancialAssets
688	Percentage of interests acquired	Concept (Percent)	As Of		ifrs-full:PercentageOfVotingEquityInterestsAcquired
689	2417402 - Disclosure - RESTRICTED CASH - Components of Restricted Cash (Details)	Network	*	*	http://klgold.com/role/RestrictedCashComponentsOfRestrictedCashDetails
690	Implied Table	Table	*	*	implied:Table
691	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
692	Cash collateral relating to rehabilitation performance guarantees	Concept (Monetary)	As Of	Debit	kl:NoncurrentCashCollateralFromGuarantees
693	Other restricted cash	Concept (Monetary)	As Of	Debit	kl:NoncurrentOtherRestrictedCash
694	Restricted cash	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
695	2417403 - Disclosure - RESTRICTED CASH - Narrative (Details)	Network	*	*	http://klgold.com/role/RestrictedCashNarrativeDetails
696	Restricted Cash And Cash Equivalents [Table]	Table	*	*	kl:RestrictedCashAndCashEquivalentsTable
697	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
698	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
699	Australia	Member			country:AU
700	Restricted Cash And Cash Equivalents [Line Items]	LineItems			kl:RestrictedCashAndCashEquivalentsLineItems
701	Cash collateral relating to rehabilitation performance guarantees	Concept (Monetary)	As Of	Debit	kl:NoncurrentCashCollateralFromGuarantees
702	2418402 - Disclosure - MINING INTERESTS AND PLANT AND EQUIPMENT - Changes in Mining Interests, Plant and Equipment (Details)	Network	*	*	http://klgold.com/role/MiningInterestsAndPlantAndEquipmentChangesInMiningInterestsPlantAndEquipmentDetails
703	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
704	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
705	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
706	Depletable	Member			kl:DepletableMember
707	Non depletable	Member			kl:NonDepletableMember
708	Total mining interest	Member			kl:MiningInterestsMember
709	Plant and equipment	Member			kl:PlantAndEquipmentMember
710	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
711	Cost	Abstract			ifrs-full:ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
712	Mining interests, plant and equipment, cost, beginning balance	Concept (Monetary)	As Of	Debit	kl:PropertyPlantAndEquipmentGross1
713	Additions, including transfer from construction in progress	Concept (Monetary)	For Period	Debit	ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
714	Construction in progress, net of transfers to plant and equipment additions	Concept (Monetary)	For Period	Debit	kl:ConstructionInProgressNetOfTransfers
715	Fair value of shares issued for IBA, amortized over life of mine (note 22(a))	Concept (Monetary)	For Period	Credit	ifrs-full:IssuesFairValueMeasurementEntitysOwnEquityInstruments
716	Change in environmental closure assets (estimate and discount rate)	Concept (Monetary)	For Period	Debit	kl:ChangeInEnvironmentalClosureAssetsPropertyPlantAndEquipment
717	Disposals	Concept (Monetary)	For Period	Credit	ifrs-full:DisposalsPropertyPlantAndEquipment
718	Foreign currency translation	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
719	Mining interests, plant and equipment, cost, ending balance	Concept (Monetary)	As Of	Debit	kl:PropertyPlantAndEquipmentGross1
720	Accumulated depreciation and depletion	Abstract			kl:ReconciliationOfChangesInAccumulatedDepreciationOfPropertyPlantAndEquipmentRollForward
721	Accumulated depreciation and depletion, beginning balance	Concept (Monetary)	As Of	Credit	kl:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment1
722	Depreciation	Concept (Monetary)	For Period		ifrs-full:DepreciationPropertyPlantAndEquipment
723	Depletion	Concept (Monetary)	For Period	Debit	kl:AccumulatedDepreciationDepletionAndAmortizationDepletionPropertyPlantAndEquipment
724	Disposals	Concept (Monetary)	For Period	Credit	kl:AccumulatedDepreciationDepletionAndAmortizationDisposalsPropertyPlantAndEquipment
725	Foreign currency translation	Concept (Monetary)	For Period	Credit	kl:AccumulatedDepreciationDepletionAndAmortizationForeignCurrencyTranslationPropertyPlantAndEquipment
726	Accumulated depreciation and depletion, ending balance	Concept (Monetary)	As Of	Credit	kl:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment1
727	Mining interests, plant and equipment carrying value	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
728	2418403 - Disclosure - MINING INTERESTS AND PLANT AND EQUIPMENT - Additional Information (Details)	Network	*	*	http://klgold.com/role/MiningInterestsAndPlantAndEquipmentAdditionalInformationDetails
729	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
730	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
731	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
732	Australia	Member			country:AU
733	Real Estate And Accumulated Depreciation Description Of Property1 [Axis]	Axis			kl:RealEstateAndAccumulatedDepreciationDescriptionOfProperty1Axis
734	Real Estate And Accumulated Depreciation Description Of Property [Domain]	Member			kl:RealEstateAndAccumulatedDepreciationDescriptionOfPropertyDomain
735	Macassa Mine	Member			kl:MacassaMineMember
736	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
737	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
738	Non depletable	Member			kl:NonDepletableMember
739	Plant and equipment	Member			kl:PlantAndEquipmentMember
740	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
741	Carrying amount [member]	Member			ifrs-full:CarryingAmountMember
742	Accumulated depreciation	Member			ifrs-full:AccumulatedDepreciationAndAmortisationMember
743	Property, Plant And Equipment By Financing Lease Status [Axis]	Axis			kl:PropertyPlantAndEquipmentByFinancingLeaseStatusAxis
744	Property, Plant And Equipment By Financing Lease Status [Domain]	Member			kl:PropertyPlantAndEquipmentByFinancingLeaseStatusDomain
745	Capital Equipment and Vehicles	Member			kl:PropertyPlantAndEquipmentSubjectToFinancingLeasesMember
746	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
747	Mining interests and plant and equipment	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
748	Change in value	Concept (Monetary)	For Period	Debit	ifrs-full:ChangesInPropertyPlantAndEquipment
749	Construction in progress	Concept (Monetary)	As Of	Debit	ifrs-full:ConstructionInProgress
750	2419402 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Details)	Network	*	*	http://klgold.com/role/AccountsPayableAndAccruedLiabilitiesDetails
751	Implied Table	Table	*	*	implied:Table
752	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
753	Current trade payables	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
754	Payroll and governement remitances	Concept (Monetary)	As Of	Credit	ifrs-full:ShorttermEmployeeBenefitsAccruals
755	Accounts payable and accrued liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
756	2420402 - Disclosure - FINANCE LEASES - Minimum Loan Payments Due For Finance Lease Obligations (Details)	Network	*	*	http://klgold.com/role/FinanceLeasesMinimumLoanPaymentsDueForFinanceLeaseObligationsDetails
757	Disclosure of finance lease and operating lease by lessee [table]	Table	*	*	ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
758	Maturity [axis]	Axis			ifrs-full:MaturityAxis
759	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
760	Not later than one year	Member			ifrs-full:NotLaterThanOneYearMember
761	Later than one year and not later than five years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
762	Disclosure of finance lease and operating lease by lessee [line items]	LineItems			ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
763	Minimum finance lease payments payable	Concept (Monetary)	As Of	Credit	ifrs-full:MinimumFinanceLeasePaymentsPayable
764	Less: Future finance charges	Concept (Monetary)	As Of	Credit	ifrs-full:FutureFinanceChargeOnFinanceLease
765	Present value of minimum lease payments	Concept (Monetary)	As Of	Credit	ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
766	Less: Current portion	Concept (Monetary)	As Of	Credit	kl:MinimumFinanceLeasePaymentsPayableAtPresentValueCurrent
767	Non-current portion	Concept (Monetary)	As Of	Credit	kl:MinimumFinanceLeasePaymentsPayableAtPresentValueExcludingCurrentPortion
768	2420403 - Disclosure - FINANCE LEASES - Narrative (Details)	Network	*	*	http://klgold.com/role/FinanceLeasesNarrativeDetails
769	Disclosure of finance lease and operating lease by lessee [table]	Table	*	*	ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
770	Range [axis]	Axis			ifrs-full:RangeAxis
771	Ranges [member]	Member			ifrs-full:RangesMember
772	Bottom of range	Member			ifrs-full:BottomOfRangeMember
773	Top of range	Member			ifrs-full:TopOfRangeMember
774	Property, Plant And Equipment By Financing Lease Status [Axis]	Axis			kl:PropertyPlantAndEquipmentByFinancingLeaseStatusAxis
775	Property, Plant And Equipment By Financing Lease Status [Domain]	Member			kl:PropertyPlantAndEquipmentByFinancingLeaseStatusDomain
776	Capital Equipment and Vehicles	Member			kl:PropertyPlantAndEquipmentSubjectToFinancingLeasesMember
777	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
778	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
779	Credit Facility	Member			kl:CreditFacilityMember
780	Equipment Lease Facility	Member			kl:CreditFacilityEquipmentLeaseFacilityMember
781	Disclosure of finance lease and operating lease by lessee [line items]	LineItems			ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
782	Borrowings, interest rate	Concept (Percent)	As Of		ifrs-full:BorrowingsInterestRate
783	Line of credit maximum borrowing capacity	Concept (Monetary)	As Of	Credit	kl:LineOfCreditFacilityMaximumBorrowingCapacity1
784	Liability portion of convertible debentures (note 22)	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
785	2421402 - Disclosure - SHARE BASED LIABILITIES - Change in Number of Units Outstanding (Details)	Network	*	*	http://klgold.com/role/ShareBasedLiabilitiesChangeInNumberOfUnitsOutstandingDetails
786	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
787	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
788	Share-based payment arrangements [member]	Member			ifrs-full:SharebasedPaymentArrangementsMember
789	DSUs	Member			kl:DeferredSharedUnitsMember
790	Phantom share units	Member			kl:PhantomShareUnitsMember
791	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
792	Opening balance (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
793	Granted (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
794	Redeemed (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
795	Cancelled (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement
796	Ending balance (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
797	2421403 - Disclosure - SHARE BASED LIABILITIES - Liability Expense (Details)	Network	*	*	http://klgold.com/role/ShareBasedLiabilitiesLiabilityExpenseDetails
798	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
799	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
800	Share-based payment arrangements [member]	Member			ifrs-full:SharebasedPaymentArrangementsMember
801	DSU's and Phantom share units	Member			kl:DeferredShareAndPhantomShareUnitsMember
802	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
803	Changes In Liabilities From Share-Based Payment Transactions [Roll Forward]	Abstract			kl:ChangesInLiabilitiesFromShareBasedPaymentTransactionsRollForward
804	Opening liability	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilitiesFromSharebasedPaymentTransactions2011
805	Share based payment expense	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseFromCashsettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
806	Redeemed DSUs and phantom share units (cash payments)	Concept (Monetary)	For Period	Debit	kl:CashPaymentsFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
807	Foreign currency translation	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
808	Total share based payment liability	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilitiesFromSharebasedPaymentTransactions2011
809	Current portion of share based payment liability	Concept (Monetary)	As Of	Credit	kl:CurrentLiabilitiesFromSharebasedPaymentTransactions
810	Share based liabilities	Concept (Monetary)	As Of	Credit	kl:NoncurrentLiabilitiesFromSharebasedPaymentTransactions
811	2422402 - Disclosure - CONVERTIBLE DEBENTURES - Narrative (Details)	Network	*	*	http://klgold.com/role/ConvertibleDebenturesNarrativeDetails
812	Disclosure of detailed information about financial instruments [table]	Table	*	*	ifrs-full:DisclosureOfFinancialInstrumentsTable
813	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
814	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
815	Convertible Unsecured Subordinated Debentures, Due June 30, 2017	Member			kl:ConvertibleUnsecuredSubordinatedDebenturesDueJune302017Member
816	Convertible Unsecured Subordinated Debentures, Due December 31, 2017	Member			kl:ConvertibleUnsecuredSubordinatedDebenturesDueDecember312017Member
817	Disclosure of detailed information about financial instruments [line items]	LineItems			ifrs-full:DisclosureOfFinancialInstrumentsLineItems
818	Repayments of debentures	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfBondsNotesAndDebentures
819	Debt face amount	Concept (Monetary)	As Of	Credit	kl:BorrowingsFaceAmount
820	Borrowings, interest rate	Concept (Percent)	As Of		ifrs-full:BorrowingsInterestRate
821	Interest expense on borrowings	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpenseOnBorrowings
822	Conversion of securities recorded as a component of shareholder's equity	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughConversionOfConvertibleInstruments
823	Liability portion of convertible debentures (note 22)	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
824	Debt converted	Concept (Monetary)	For Period	Credit	kl:DebtConversionConvertedInstrumentAmount
825	Debt conversion price (in USD per share)	Concept (Share)	As Of		kl:DebtInstrumentConvertibleConversionPrice
826	Debt converted (in shares)	Concept (Shares)	As Of		kl:DebtInstrumentConvertibleNumberOfEquityInstruments1
827	Number of shares issued (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesIssued
828	Interest expense	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpense
829	Notional amount	Concept (Monetary)	As Of		ifrs-full:NotionalAmount
830	Net proceeds from debentures	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromIssueOfBondsNotesAndDebentures
831	2422403 - Disclosure - CONVERTIBLE DEBENTURES - Changes in Debentures (Details)	Network	*	*	http://klgold.com/role/ConvertibleDebenturesChangesInDebenturesDetails
832	Disclosure of detailed information about borrowings [table]	Table	*	*	ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
833	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
834	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
835	Convertible Unsecured Debentures	Member			kl:ConvertibleUnsecuredDebenturesMember
836	Disclosure of detailed information about borrowings [line items]	LineItems			ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
837	Carrying amount, beginning of period	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
838	Repurchase of debentures	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfBondsNotesAndDebentures
839	Interest paid	Concept (Monetary)	For Period	Credit	ifrs-full:InterestPaidClassifiedAsFinancingActivities
840	Interest expense	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpenseOnBorrowings
841	Conversions	Concept (Monetary)	For Period	Debit	kl:DecreaseThroughConversionBorrowings
842	Unwinding of discount	Concept (Monetary)	For Period		ifrs-full:BorrowingCostsIncurred
843	Foreign currency translation	Concept (Monetary)	For Period	Credit	kl:IncreaseDecreaseThroughNetExchangeDifferencesBorrowings
844	Carrying amount, end of year	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
845	2423402 - Disclosure - PROVISIONS - Components of Provisions (Details)	Network	*	*	http://klgold.com/role/ProvisionsComponentsOfProvisionsDetails
846	Implied Table	Table	*	*	implied:Table
847	Disclosure of other provisions, contingent liabilities and contingent assets [Abstract]	Abstract			kl:DisclosureofotherprovisionscontingentliabilitiesandcontingentassetsAbstract
848	Environmental rehabilitation provision	Concept (Monetary)	As Of	Credit	ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCosts
849	Long service leave	Concept (Monetary)	As Of	Credit	kl:ProvisionForLongServiceLeave
850	Total provisions	Concept (Monetary)	As Of	Credit	ifrs-full:Provisions
851	Current provisions	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentProvisions
852	Long-term balance	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentProvisions
853	2423403 - Disclosure - PROVISIONS - Changes in Provision (Details)	Network	*	*	http://klgold.com/role/ProvisionsChangesInProvisionDetails
854	Disclosure of other provisions [table]	Table	*	*	ifrs-full:DisclosureOfOtherProvisionsTable
855	Classes of other provisions [axis]	Axis			ifrs-full:ClassesOfProvisionsAxis
856	Other provisions [member]	Member			ifrs-full:OtherProvisionsMember
857	Environmental rehabilitation provision	Member			ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
858	Disclosure of other provisions [line items]	LineItems			ifrs-full:DisclosureOfOtherProvisionsLineItems
859	Changes In Other Provisions [Roll Forward]	Abstract			kl:ChangesInOtherProvisionsRollForward
860	Balance, beginning of year	Concept (Monetary)	As Of	Credit	ifrs-full:OtherProvisions
861	Change in estimates	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughChangeInDiscountRateOtherProvisions
862	Disposition of Stawell	Concept (Monetary)	For Period	Debit	kl:DecreaseThroughDisposalOfSecuritiesClassifiedAsAvailableForSaleOtherProvisions
863	Site closure and reclamation costs paid	Concept (Monetary)	For Period	Debit	ifrs-full:DecreaseThroughTransferToLiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSaleOtherProvisions
864	Unwinding of discount on rehabilitation provision	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughTimeValueOfMoneyAdjustmentOtherProvisions
865	Foreign currency translation	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
866	Balance, end of the year	Concept (Monetary)	As Of	Credit	ifrs-full:OtherProvisions
867	Current portion	Concept (Monetary)	As Of	Credit	ifrs-full:OtherShorttermProvisions
868	Long-term balance	Concept (Monetary)	As Of	Credit	ifrs-full:OtherLongtermProvisions
869	2423404 - Disclosure - PROVISIONS - Narrative (Details)	Network	*	*	http://klgold.com/role/ProvisionsNarrativeDetails
870	Disclosure of other provisions [table]	Table	*	*	ifrs-full:DisclosureOfOtherProvisionsTable
871	Range [axis]	Axis			ifrs-full:RangeAxis
872	Ranges [member]	Member			ifrs-full:RangesMember
873	Bottom of range	Member			ifrs-full:BottomOfRangeMember
874	Top of range	Member			ifrs-full:TopOfRangeMember
875	Classes of other provisions [axis]	Axis			ifrs-full:ClassesOfProvisionsAxis
876	Other provisions [member]	Member			ifrs-full:OtherProvisionsMember
877	Environmental rehabilitation provision	Member			ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
878	Disclosure of other provisions [line items]	LineItems			ifrs-full:DisclosureOfOtherProvisionsLineItems
879	Discount rate used in estimating environmental provision	Concept (Percent)	As Of		kl:MajorAssumptionsMadeConcerningFutureEventsOtherProvisionsDiscountRate
880	Inflation rate	Concept (Percent)	As Of		kl:MajorAssumptionsMadeConcerningFutureEventsOtherProvisionsInflationRate
881	2424402 - Disclosure - SHAREHOLDERS' EQUITY - Narrative (Details)	Network	*	*	http://klgold.com/role/ShareholdersEquityNarrativeDetails
882	Disclosure of classes of share capital [table]	Table	*	*	ifrs-full:DisclosureOfClassesOfShareCapitalTable
883	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
884	Equity [member]	Member			ifrs-full:EquityMember
885	Share Capital	Member			ifrs-full:IssuedCapitalMember
886	Classes of entity's own equity instruments [axis]	Axis			ifrs-full:ClassesOfEntitysOwnEquityInstrumentsAxis
887	Entity's own equity instruments [member]	Member			ifrs-full:EntitysOwnEquityInstrumentsMember
888	PSUs	Member			kl:PerformanceSharesUnitsPSUsMember
889	Warrants	Member			kl:WarrantsMember
890	Share options	Member			kl:EmployeeStockOption1Member
891	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
892	Share-based payment arrangements [member]	Member			ifrs-full:SharebasedPaymentArrangementsMember
893	RSUs and PSUs	Member			kl:RestrictedStockUnitsAndPerformanceShareUnitsMember
894	PSUs	Member			kl:PerformanceSharesUnitsPSUsMember
895	Range [axis]	Axis			ifrs-full:RangeAxis
896	Ranges [member]	Member			ifrs-full:RangesMember
897	Bottom of range	Member			ifrs-full:BottomOfRangeMember
898	Top of range	Member			ifrs-full:TopOfRangeMember
899	Plan Name1 [Axis]	Axis			kl:PlanName1Axis
900	Plan Name1 [Domain]	Member			kl:PlanName1Domain
901	LTIP	Member			kl:LongTermIncentivePlanMember
902	Disclosure of classes of share capital [line items]	LineItems			ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
903	Number of shares outstanding (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesOutstanding
904	Number of shares issued (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesIssued
905	Number of options exercised (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
906	Proceeds from exercise of equity	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughExerciseOfOptions
907	Number of of instruments exercised other than options (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
908	Common shares issued as part of IBA (in shares)	Concept (Shares)	For Period		kl:StockIssuedDuringPeriodShares1
909	Value of shares issued	Concept (Monetary)	For Period	Credit	ifrs-full:IssuesFairValueMeasurementEntitysOwnEquityInstruments
910	Share repurchases (in shares)	Concept (Shares)	For Period		kl:StockRepurchasedDuringPeriodShares1
911	Share repurchases	Concept (Monetary)	For Period	Debit	kl:StockRepurchasedDuringPeriodValue1
912	Dividends paid, ordinary shares per share (in CAD per share)	Concept (Share)	For Period		ifrs-full:DividendsPaidOrdinarySharesPerShare
913	Dividends paid, ordinary shares	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsPaidOrdinaryShares
914	Dividend payables	Concept (Monetary)	As Of	Credit	ifrs-full:DividendPayables
915	Common stock threshold for grants under share-based compensation	Concept (Percent)	For Period		kl:ShareBasedCompensationCompensationArrangementByShareBasedPaymentAwardGrantThreshold
916	Maximum term of options granted	Concept (xbrli:durationItemType)	For Period		kl:MaximumTermOfOptionsGrantedForShareBasedPaymentArrangement
917	Termination period after employment change of options granted	Concept (xbrli:durationItemType)	For Period		kl:TerminationPeriodAfterEmploymentChangeOfOptionsGrantedForShareBasedPaymentArrangements
918	Granted (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
919	Weighted average share price of options exercised during period (in CAD per share)	Concept (Share)	For Period		kl:WeightedAverageSharePriceStockOptionsExercised
920	Vesting period	Concept (xbrli:durationItemType)	For Period		kl:VestingRequirementsForSharebasedPaymentArrangements
921	Vesting rights percentage	Concept (Percent)	For Period		kl:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsPercentage1
922	2424403 - Disclosure - SHAREHOLDERS' EQUITY - Changes in Stock Options (Details)	Network	*	*	http://klgold.com/role/ShareholdersEquityChangesInStockOptionsDetails
923	Implied Table	Table	*	*	implied:Table
924	Share Capital, Reserves And Other Equity Interest [Abstract]	Abstract			kl:ShareCapitalReservesAndOtherEquityInterestAbstract
925	Number of Shares	Abstract			kl:ShareCapitalReservesAndOtherEquityInterestSharesRollForward
926	Opening Balance (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOutstandingShareOptions
927	Exercised (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
928	Expired (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
929	Forfeited (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
930	Stock options outstanding, end of year (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOutstandingShareOptions
931	Stock options exerciseable, end of year (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
932	Weighted Average Exercise Price	Abstract			kl:ShareCapitalReservesAndOtherEquityInterestWeightedAverageExercisePriceRollForward
933	Weighted average exercise price, Opening Balance (in CAD)	Concept (Monetary)	As Of		ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
934	Weighted average exercise price, Exercised (in CAD)	Concept (Monetary)	For Period		ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement
935	Weighted average exercise price, Expired (in CAD)	Concept (Monetary)	For Period		ifrs-full:WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement
936	Weighted average exercise price, Forfeited (in CAD)	Concept (Monetary)	For Period		ifrs-full:WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement
937	Weighted average exercise price, end of year (in CAD)	Concept (Monetary)	As Of		ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
938	Weighted average exercise price, Exerciseable (in CAD)	Concept (Monetary)	As Of		ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
939	2424404 - Disclosure - SHAREHOLDERS' EQUITY - Stock Options Exercised (Details)	Network	*	*	http://klgold.com/role/ShareholdersEquityStockOptionsExercisedDetails
940	Disclosure of range of exercise prices of outstanding share options [table]	Table	*	*	ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable
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944	Top of range	Member			ifrs-full:TopOfRangeMember
945	Weighted average	Member			ifrs-full:WeightedAverageMember
946	Ranges of exercise prices for outstanding share options [axis]	Axis			ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
947	Ranges of exercise prices for outstanding share options [member]	Member			ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
948	$2.85 - $15.11	Member			kl:ExercisePriceRangeOneMember
949	$3.42 - $6.82	Member			kl:ExercisePriceRangeTwoMember
950	$3.42 - $6.82	Member			kl:ExercisePriceRangeThreeMember
951	$2.98 - $6.82	Member			kl:ExercisePriceRangeFourMember
952	$1.11 - $7.81	Member			kl:ExercisePriceRangeFiveMember
953	$0.86 - $7.81	Member			kl:ExercisePriceRangeSixMember
954	$2.11 - $7.81	Member			kl:ExercisePriceRangeSevenMember
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958	Number of options exercised (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
959	2424405 - Disclosure - SHAREHOLDERS' EQUITY - Movement in PSU and RSU Instruments (Details)	Network	*	*	http://klgold.com/role/ShareholdersEquityMovementInPsuAndRsuInstrumentsDetails
960	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
961	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
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967	Granted (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
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969	Redeemed (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
970	Ending balance (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
971	2424406 - Disclosure - SHAREHOLDERS' EQUITY - Share-Based Payment Expense (Details)	Network	*	*	http://klgold.com/role/ShareholdersEquityShareBasedPaymentExpenseDetails
972	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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975	General and administrative	Member			kl:GeneralAndAdministrativeExpense1Member
976	Production costs	Member			kl:ProductionCostsMember
977	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
978	RSU and PSU share based payment expense	Concept (Monetary)	For Period	Debit	kl:SharebasedPaymentExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
979	RSU and PSU cash payments	Concept (Monetary)	For Period	Debit	kl:CashPaymentsFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
980	Stock options share based payment expense	Concept (Monetary)	For Period	Debit	kl:SharebasedPaymentExpenseFromEquitysettledShareOptionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
981	Equity based instruments share based payment expense	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
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983	Total share based payment expense	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
984	2424407 - Disclosure - SHAREHOLDERS' EQUITY - Earnings per Share (Details)	Network	*	*	http://klgold.com/role/ShareholdersEquityEarningsPerShareDetails
985	Implied Table	Table	*	*	implied:Table
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988	Loss from discontinued operations (note 29)	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromDiscontinuedOperations
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992	Basic loss per share from discontinued operations (in dollars per share)	Concept (Share)	For Period		ifrs-full:BasicEarningsLossPerShareFromDiscontinuedOperations
993	Basic earnings per share (in dollars per share)	Concept (Share)	For Period		ifrs-full:BasicEarningsLossPerShare
994	Weighted average diluted number of common shares outstanding (in '000s) (in shares)	Concept (Shares)	For Period		ifrs-full:AdjustedWeightedAverageShares
995	Diluted earnings per share from continuing operations (in dollars per share)	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShareFromContinuingOperations
996	Diluted loss per share from discontinued operations (in dollars per share)	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShareFromDiscontinuedOperations
997	Diluted earnings per share (in dollars per share)	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShare
998	In the money shares - share option (in shares)s (in '000s)	Concept (Shares)	For Period		ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
999	In the money shares - RSUs and PSUs (in '000s) (in shares)	Concept (Shares)	For Period		kl:DilutiveEffectOfOtherEquityInstrumentsOnNumberOfOrdinaryShares
1000	2424408 - Disclosure - SHAREHOLDERS' EQUITY - Anti-dilutive Shares (Details)	Network	*	*	http://klgold.com/role/ShareholdersEquityAntiDilutiveSharesDetails
1001	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1002	Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities 1 [Axis]	Axis			kl:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities1Axis
1003	Antidilutive Securities Name 1 [Domain]	Member			kl:AntidilutiveSecuritiesName1Domain
1004	Share options	Member			kl:EmployeeStockOption1Member
1005	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1006	Anti-dilutive shares excluded from computation of earnings per share (in shares)	Concept (Shares)	For Period		kl:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount1
1007	2425402 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION - Narrative (Details)	Network	*	*	http://klgold.com/role/SupplementalCashFlowInformationNarrativeDetails
1008	Implied Table	Table	*	*	implied:Table
1009	Cash Flow Statement [Abstract]	Abstract			kl:CashFlowStatementAbstract
1010	Cash	Concept (Monetary)	As Of	Debit	ifrs-full:Cash
1011	2425403 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION - Supplemental Information (Details)	Network	*	*	http://klgold.com/role/SupplementalCashFlowInformationSupplementalInformationDetails
1012	Implied Table	Table	*	*	implied:Table
1013	Cash Flow Statement [Abstract]	Abstract			kl:CashFlowStatementAbstract
1014	Change in non-cash working capital	Abstract			ifrs-full:AdjustmentsForReconcileProfitLossAbstract
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1016	Decrease (increase) in inventory	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
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1018	Decrease (increase) in accounts payable and accrued liabilities	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables
1019	Change in non-cash working capital	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseInWorkingCapital
1020	Investing and financing non-cash transactions	Abstract			kl:ExplanationOfInvestingAndFinancingTransactionsNotRequiringUseOfCashOrCashEquivalentsAbstract
1021	Plant and equipment acquired through finance lease	Concept (Monetary)	For Period	Debit	kl:InvestingAndFinancingTransactionsNotRequiringUseOfCashOrCashEquivalents
1022	Accounts payable related to capital projects	Abstract			ifrs-full:TradeAndOtherPayablesAbstract
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1024	Accounts payable related to plant and equipment	Concept (Monetary)	As Of	Credit	kl:PayablesForPurchaseOfNoncurrentAssetsPlantAndEquipment
1025	2426402 - Disclosure - OPERATING SEGMENTS - Operating Segment Information (Details)	Network	*	*	http://klgold.com/role/OperatingSegmentsOperatingSegmentInformationDetails
1026	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1027	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
1028	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
1029	Total Canadian Operations	Member			ifrs-full:CountryOfDomicileMember
1030	Total Australian Operations	Member			ifrs-full:ForeignCountriesMember
1031	Segment consolidation items [axis]	Axis			ifrs-full:SegmentConsolidationItemsAxis
1032	Entity's total for segment consolidation items [member]	Member			ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
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1035	Segments [axis]	Axis			ifrs-full:SegmentsAxis
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1038	Holt Complex	Member			kl:HoltComplexSegmentMember
1039	Fosterville	Member			kl:FostervilleSegmentMember
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1047	Production costs	Concept (Monetary)	For Period	Debit	ifrs-full:CostOfSales
1048	Royalty expense	Concept (Monetary)	For Period	Debit	ifrs-full:RoyaltyExpense
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1051	General and administrative	Concept (Monetary)	For Period	Debit	ifrs-full:AdministrativeExpense
1052	Transaction costs	Concept (Monetary)	For Period	Debit	ifrs-full:AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
1053	Exploration and evaluation	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
1054	Care and maintenance	Concept (Monetary)	For Period	Debit	ifrs-full:RepairsAndMaintenanceExpense
1055	Earnings (loss) from operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromOperatingActivities
1056	Other income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherGainsLosses
1057	Finance income	Concept (Monetary)	For Period	Credit	ifrs-full:FinanceIncome
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1059	Earnings before taxes from continuing operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
1060	Total capital expenditures	Concept (Monetary)	As Of	Credit	ifrs-full:CapitalCommitments
1061	Total assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
1062	Total liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
1063	2426403 - Disclosure - OPERATING SEGMENTS - Operating Segment Information, Geographic and Significant Customers (Details)	Network	*	*	http://klgold.com/role/OperatingSegmentsOperatingSegmentInformationGeographicAndSignificantCustomersDetails
1064	Disclosure of nature and extent of risks arising from financial instruments [table]	Table	*	*	ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
1065	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
1066	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
1067	Australia	Member			ifrs-full:ForeignCountriesMember
1068	Canada	Member			ifrs-full:CountryOfDomicileMember
1069	Major customers [axis]	Axis			ifrs-full:MajorCustomersAxis
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1072	Customer 2	Member			kl:CustomerTwoMember
1073	Customer 3	Member			kl:CustomerThreeMember
1074	Customer 4	Member			kl:CustomerFourMember
1075	Types of risks [axis]	Axis			ifrs-full:TypesOfRisksAxis
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1078	Products and services [axis]	Axis			ifrs-full:ProductsAndServicesAxis
1079	Products and services [member]	Member			ifrs-full:ProductsAndServicesMember
1080	Metal sales	Member			kl:MetalMember
1081	Disclosure of nature and extent of risks arising from financial instruments [line items]	LineItems			ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
1082	Non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssets
1083	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1084	Concentration risk	Concept (Percent)	For Period		ifrs-full:PercentageOfEntitysRevenue
1085	2427402 - Disclosure - CAPITAL RISK MANAGEMENT (Details)	Network	*	*	http://klgold.com/role/CapitalRiskManagementDetails
1086	Implied Table	Table	*	*	implied:Table
1087	Disclosure of nature and extent of risks arising from financial instruments [abstract]	Abstract			ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsAbstract
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1089	Reserves	Concept (Monetary)	As Of	Credit	ifrs-full:OtherReserves
1090	Accumulated other comprehensive income (loss)	Concept (Monetary)	As Of	Credit	ifrs-full:AccumulatedOtherComprehensiveIncome
1091	Retained earnings	Concept (Monetary)	As Of	Credit	ifrs-full:RetainedEarnings
1092	Equity, including portion of convertible debt	Concept (Monetary)	As Of	Credit	kl:EquityAndBorrowings
1093	2428402 - Disclosure - FINANCIAL INSTRUMENTS - Financial Assets and Liabilities (Details)	Network	*	*	http://klgold.com/role/FinancialInstrumentsFinancialAssetsAndLiabilitiesDetails
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1106	Investments in equity securities, measured at fair value through Other Comprehensive Income	Member			ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1107	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
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1109	2428402 - Disclosure - FINANCIAL INSTRUMENTS - Financial Assets and Liabilities (Details)	Network	*	*	http://klgold.com/role/FinancialInstrumentsFinancialAssetsAndLiabilitiesDetails
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1117	Other financial liabilities, measured at amortized cost	Member			ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
1118	Disclosure of financial liabilities [line items]	LineItems			ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
1119	Financial Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:FinancialLiabilities
1120	2428403 - Disclosure - FINANCIAL INSTRUMENTS - Fair Value (Details)	Network	*	*	http://klgold.com/role/FinancialInstrumentsFairValueDetails
1121	Disclosure of fair value measurement of assets [table]	Table	*	*	ifrs-full:DisclosureOfFairValueMeasurementOfAssetsTable
1122	Measurement [axis]	Axis			ifrs-full:MeasurementAxis
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1127	Available for sale investments	Member			ifrs-full:TradingEquitySecuritiesMember
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1133	Disclosure of fair value measurement of assets [line items]	LineItems			ifrs-full:DisclosureOfFairValueMeasurementOfAssetsLineItems
1134	Assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
1135	2428404 - Disclosure - FINANCIAL INSTRUMENTS - Narrative (Details)	Network	*	*	http://klgold.com/role/FinancialInstrumentsNarrativeDetails
1136	Disclosure of nature and extent of risks arising from financial instruments [table]	Table	*	*	ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
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1146	2428405 - Disclosure - FINANCIAL INSTRUMENTS - Contractual Cash Flow Requirements (Details)	Network	*	*	http://klgold.com/role/FinancialInstrumentsContractualCashFlowRequirementsDetails
1147	Disclosure of financial liabilities [table]	Table	*	*	ifrs-full:DisclosureOfFinancialLiabilitiesTable
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1162	2428406 - Disclosure - FINANCIAL INSTRUMENTS - Foreign Currency Risk (Details)	Network	*	*	http://klgold.com/role/FinancialInstrumentsForeignCurrencyRiskDetails
1163	Disclosure of nature and extent of risks arising from financial instruments [table]	Table	*	*	ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
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1167	Disclosure of nature and extent of risks arising from financial instruments [line items]	LineItems			ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
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1171	2429401 - Disclosure - COMMITMENTS AND CONTRACTUAL OBLIGATIONS (Details)	Network	*	*	http://klgold.com/role/CommitmentsAndContractualObligationsDetails
1172	Disclosure of maturity analysis for non-derivative financial liabilities [table]	Table	*	*	ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesTable
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1181	Triple Flag	Member			kl:TripleFlagMiningFinanceBermudaLtd.Member
1182	Real Estate And Accumulated Depreciation Description Of Property1 [Axis]	Axis			kl:RealEstateAndAccumulatedDepreciationDescriptionOfProperty1Axis
1183	Real Estate And Accumulated Depreciation Description Of Property [Domain]	Member			kl:RealEstateAndAccumulatedDepreciationDescriptionOfPropertyDomain
1184	Macassa Mine	Member			kl:MacassaMineMember
1185	Fosterville Gold Mine Pty Ltd.	Member			kl:FostervilleGoldMinePtyLtdMember
1186	Taylor Mine	Member			kl:TaylorMineMember
1187	Holloway mine	Member			kl:HollowayMineMember
1188	Holt Mine	Member			kl:HoltMineMember
1189	Macassa, Taylor, Holt, Holloway Mines	Member			kl:MacassaTaylorHoltAndHollowayMinesMember
1190	Maud Creek Gold Project	Member			kl:MaudCreekGoldProjectMember
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1192	Net smelter return, royalty percentage	Concept (Percent)	For Period		kl:RoyaltyReturnPercentage
1193	Ad valorem return, royalty percentage	Concept (Percent)	For Period		kl:AdValoremReturnRoyaltyPercentage
1194	Royalty obligation terms, minimum gold production (in ounces)	Concept (num:massItemType)	For Period		kl:RoyaltyObligationTermsGoldProduction
1195	Gross royalty percentage obligation on gold production	Concept (Percent)	For Period		kl:GrossRoyaltyObligationOnGoldProductionPercent
1196	Royalty obligation payments on gold production (in AUD per ounce)	Concept (Decimal)	For Period		kl:RoyaltyObligationPaymentsGoldProductionPerOunce
1197	Contractual capital commitments	Concept (Monetary)	As Of	Credit	ifrs-full:ContractualCapitalCommitments
1198	2429402 - Disclosure - RELATED PARTY TRANSACTIONS (Details)	Network	*	*	http://klgold.com/role/RelatedPartyTransactionsDetails
1199	Implied Table	Table	*	*	implied:Table
1200	Related Party [Abstract]	Abstract			kl:RelatedPartyAbstract
1201	Officer salaries and short-term benefits	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
1202	Share based payment expense	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
1203	Directors fees	Concept (Monetary)	For Period	Debit	kl:KeyManagementPersonnelCompensationDirectorsFees
1204	Severance payments	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationTerminationBenefits
1205	Key management personnel compensation	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensation
1206	Charted aircraft expense	Concept (Monetary)	For Period	Debit	kl:KeyManagementPersonnelCompensationCharteredAircraftExpense
1207	2430402 - Disclosure - DISPOSITION OF STALWELL MINE - Narrative (Details)	Network	*	*	http://klgold.com/role/DispositionOfStalwellMineNarrativeDetails
1208	Disclosure Of Continuing And Discontinued Operations [Table]	Table	*	*	kl:DisclosureOfContinuingAndDiscontinuedOperationsTable
1209	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1210	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1211	Stawell Gold Mines Pty Ltd	Member			kl:StawellGoldMinesPtyLtdMember
1212	Continuing and discontinued operations [axis]	Axis			ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1213	Aggregate continuing and discontinued operations [member]	Member			ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1214	Discontinued operations	Member			ifrs-full:DiscontinuedOperationsMember
1215	Disclosure Of Continuing And Discontinued Operations [Line Items]	LineItems			kl:DisclosureOfContinuingAndDiscontinuedOperationsLineItems
1216	Proceeds on dispositions of assets	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations
1217	Net smelter return, royalty percentage	Concept (Percent)	For Period		kl:RoyaltyReturnPercentage
1218	Performance bond held	Concept (Monetary)	As Of	Debit	kl:BondsHeld
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1220	Disclosure Of Continuing And Discontinued Operations [Table]	Table	*	*	kl:DisclosureOfContinuingAndDiscontinuedOperationsTable
1221	Continuing and discontinued operations [axis]	Axis			ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1222	Aggregate continuing and discontinued operations [member]	Member			ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1223	Discontinued operations	Member			ifrs-full:DiscontinuedOperationsMember
1224	Disclosure Of Continuing And Discontinued Operations [Line Items]	LineItems			kl:DisclosureOfContinuingAndDiscontinuedOperationsLineItems
1225	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1226	Production costs	Concept (Monetary)	For Period	Debit	ifrs-full:CostOfSales
1227	Royalty expense	Concept (Monetary)	For Period	Debit	ifrs-full:RoyaltyExpense
1228	Depletion and depreciation	Concept (Monetary)	For Period	Debit	kl:DepletionAndDepreciation
1229	Earnings (loss) from mine operations	Concept (Monetary)	For Period	Credit	ifrs-full:GrossProfit
1230	Expenses	Abstract			ifrs-full:ExpenseByNatureAbstract
1231	Exploration	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
1232	Care and maintenance	Concept (Monetary)	For Period	Debit	ifrs-full:RepairsAndMaintenanceExpense
1233	Earnings (loss) from operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromOperatingActivities
1234	Other income, net	Concept (Monetary)	For Period	Credit	ifrs-full:OtherGainsLosses
1235	Loss on disposition of Stawell Mine	Concept (Monetary)	For Period	Credit	ifrs-full:GainLossRecognisedOnMeasurementToFairValueLessCostsToSellOrOnDisposalOfAssetsOrDisposalGroupsConstitutingDiscontinuedOperation
1236	Foreign translation reserve	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
1237	Earnings before taxes from continuing operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
1238	Income tax recovery	Concept (Monetary)	For Period	Debit	ifrs-full:TaxExpenseRelatingToProfitLossFromOrdinaryActivitiesOfDiscontinuedOperations
1239	Net earnings	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
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1241	Loss per share from discontinued operations - diluted (in dollars per share)	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShare
1242	2431401 - Disclosure - SUBSEQUENT EVENTS (Details)	Network	*	*	http://klgold.com/role/SubsequentEventsDetails
1243	Disclosure of non-adjusting events after reporting period [table]	Table	*	*	ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
1244	Counterparties [axis]	Axis			ifrs-full:CounterpartiesAxis
1245	Counterparties [member]	Member			ifrs-full:CounterpartiesMember
1246	Franco-Nevada Canada Holdings Corp.	Member			kl:FrancoNevadaCanadaHoldingsCorp.Member
1247	Real Estate And Accumulated Depreciation Description Of Property1 [Axis]	Axis			kl:RealEstateAndAccumulatedDepreciationDescriptionOfProperty1Axis
1248	Real Estate And Accumulated Depreciation Description Of Property [Domain]	Member			kl:RealEstateAndAccumulatedDepreciationDescriptionOfPropertyDomain
1249	Macassa Mine	Member			kl:MacassaMineMember
1250	Non-adjusting events after reporting period [axis]	Axis			ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1251	Non-adjusting events after reporting period [member]	Member			ifrs-full:NonadjustingEventsMember
1252	Amended and Restated Royalty Agreement	Member			kl:AmendedAndRestatedRoyaltyAgreementMember
1253	Disclosure of non-adjusting events after reporting period [line items]	LineItems			ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
1254	Net smelter return, royalty percentage	Concept (Percent)	For Period		kl:RoyaltyReturnPercentage