Mechel PAO (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 1001 - Document - Document and Entity Information Network

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 http://www.mechel.com/taxonomy/role/DocumentandEntityInformation
2 Implied Table Table

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3 Document and entity information [abstract] Abstract mtl:DocumentAndEntityInformationAbstract
4 Document Type Concept (Submission Type) For Period dei:DocumentType
5 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
6 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
7 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
8 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
9 Trading Symbol Concept (Text/String) For Period dei:TradingSymbol
10 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
11 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
12 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
13 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
14 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
15 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
16 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
17 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
18 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
19 1003 - Statement - Consolidated Statement of Profit (Loss) and Other Comprehensive Income Network

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 http://www.mechel.com/taxonomy/role/StatementOfComprehensiveIncomeProfitOrLossByFunctionOfExpense-310000
20 Implied Table Table

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21 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
22 Revenue from contracts with customers Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
23 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
24 Gross profit Concept (Monetary) For Period Credit ifrs-full:GrossProfit
25 Selling and distribution expenses Concept (Monetary) For Period Debit ifrs-full:DistributionCosts
26 Loss on write-off of non-current assets Concept (Monetary) For Period ifrs-full:WritedownsReversalsOfPropertyPlantAndEquipment
27 Impairment of goodwill and other non-current assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
28 Allowance for expected credit losses on financial assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9
29 Taxes other than income taxes Concept (Monetary) For Period Debit ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
30 Administrative and other operating expenses Concept (Monetary) For Period Debit ifrs-full:GeneralAndAdministrativeExpense
31 Other operating income Concept (Monetary) For Period Credit ifrs-full:OtherIncome
32 Total selling, distribution and operating income and (expenses), net Concept (Monetary) For Period Debit ifrs-full:OperatingExpenseExcludingCostOfSales
33 Operating profit Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
34 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
35 Finance costs including fines and penalties on overdue loans and borrowings and finance leases payments Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
36 Foreign exchange gain (loss), net Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
37 Share of profit (loss) of associates, net Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
38 Other income Concept (Monetary) For Period Credit mtl:OtherNonOperatingIncome1
39 Other expenses Concept (Monetary) For Period Debit mtl:OtherNonOperatingExpenses
40 Total other income and (expense), net Concept (Monetary) For Period Credit mtl:OtherIncomeExpense
41 Profit before tax from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
42 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
43 Profit for the period from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
44 Discontinued operations Abstract mtl:ProfitLossFromDiscontinuedOperationsAbstract
45 (Loss)profit after tax for the period from discontinued operations, net Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
46 Profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
47 Attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
48 Equity shareholders of Mechel PAO Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity
49 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
50 Profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
51 Other comprehensive income Abstract ifrs-full:OtherComprehensiveIncomeAbstract
52 Other comprehensive (loss) income that way be reclassified to profit or loss in subsequent periods, net of income tax: Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
53 Exchange differences on translation of foreign operations Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationNetOfTax
54 Other comprehensive income ( loss) not to be reclassified to profit or loss in subsequent periods, net of income tax: Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
55 Re-measurement of defined benefit plans Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
56 Other comprehensive income for the period, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
57 Total comprehensive income (loss) for the year, net of tax Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
58 Attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
59 Equity shareholders of Mechel PAO Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
60 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
61 Total comprehensive income (loss) for the year, net of tax Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
62 Earnings (loss) per share Abstract ifrs-full:EarningsPerShareAbstract
63 Weighted average number of common shares Concept (Shares) For Period ifrs-full:WeightedAverageShares
64 Basic and diluted, profit for the period attributable to common equity shareholders of Mechel PAO Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
65 Earnings per share from continuing operations (Russian rubles per share), basic and diluted Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShareFromContinuingOperations
66 Loss per share from discontinued operations (Russian rubles per share) Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShareFromDiscontinuedOperations
67 1004 - Statement - Consolidated Statement of Financial Position Network

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 http://www.mechel.com/taxonomy/role/StatementOfFinancialPositionCurrentNonCurrent-210000
68 Statement [table] Table

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 mtl:StatementTable
69 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
70 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
71 Common shares [member] Member ifrs-full:OrdinarySharesMember
72 Preferred shares [member] Member ifrs-full:PreferenceSharesMember
73 Statement [LineItems] LineItems mtl:StatementLineItems
74 Assets Abstract ifrs-full:AssetsAbstract
75 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
76 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
77 Mineral licenses Concept (Monetary) As Of Debit mtl:MiningRights
78 Goodwill and other intangible assets Concept (Monetary) As Of Debit mtl:GoodwillAndOtherIntangibleAssets
79 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
80 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
81 Other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
82 Non-current financial assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssets
83 Total non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
84 Current assets Abstract ifrs-full:CurrentAssetsAbstract
85 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
86 Income tax receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssetsCurrent
87 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
88 Other current assets Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
89 Other current financial assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentFinancialAssets
90 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
91 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
92 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
93 Equity and liabilities Abstract ifrs-full:EquityAndLiabilitiesAbstract
94 Equity Abstract ifrs-full:EquityAbstract
95 Equity shares Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
96 Additional paid-in capital Concept (Monetary) As Of Credit ifrs-full:AdditionalPaidinCapital
97 Accumulated other comprehensive income Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
98 Accumulated deficit Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
99 Equity attributable to equity shareholders of Mechel PAO Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
100 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
101 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
102 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
103 Loans and borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
104 Finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinanceLeaseLiabilities
105 Other non-current financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtAmortisedCost
106 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentNonfinancialLiabilities
107 Pension obligations Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
108 Provisions Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisions
109 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
110 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
111 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
112 Loans and borrowings, including interest payable, fines and penalties on overdue amounts of RUB 9,877 million and RUB 41,992 million as of December 31, 2018 and 2017, respectively Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
113 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
114 Finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentFinanceLeaseLiabilities
115 Income tax payable Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
116 Taxes and similar charges payable other than income tax Concept (Monetary) As Of Credit ifrs-full:CurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTax
117 Advances received Concept (Monetary) As Of Credit ifrs-full:Advances
118 Other current financial liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentFinancialLiabilities
119 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
120 Pension obligations Concept (Monetary) As Of Credit ifrs-full:CurrentRecognisedLiabilitiesDefinedBenefitPlan
121 Provisions Concept (Monetary) As Of Credit ifrs-full:CurrentProvisions
122 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
123 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
124 Total equity and liabilities Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
125 1005 - Statement - Consolidated Statement of Financial Position (Parenthetical) Network

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 http://www.mechel.com/taxonomy/role/StatementOfFinancialPositionCurrentNonCurrent-210000Parenthetical
126 Implied Table Table

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127 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
128 Interest payable, fines and penalties Concept (Monetary) As Of Credit mtl:InterestPayableFinesAndPenalties
129 1006 - Statement - Consolidated Statement of Changes in Equity Network

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 http://www.mechel.com/taxonomy/role/StatementOfChangesInEquity-610000
130 Statement of changes in equity [table] Table

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 ifrs-full:StatementOfChangesInEquityTable
131 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
132 Equity [member] Member ifrs-full:EquityMember
133 Common shares [member] Member ifrs-full:OrdinarySharesMember
134 Preferred shares [member] Member ifrs-full:PreferenceSharesMember
135 Additional paid-in capital [member] Member ifrs-full:AdditionalPaidinCapitalMember
136 Accumulated other comprehensive income (loss) [member] Member ifrs-full:AccumulatedOtherComprehensiveIncomeMember
137 Accumulated deficit [member] Member ifrs-full:RetainedEarningsMember
138 Equity attributable to shareholders of Mechel PAO [member] Member ifrs-full:EquityAttributableToOwnersOfParentMember
139 Non-controlling interest [member] Member ifrs-full:NoncontrollingInterestsMember
140 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
141 Currently stated [member] Member ifrs-full:RestatedMember
142 Adjustment on initial application of IFRS 9 [member] Member ifrs-full:PreviouslyStatedMember
143 As of January 1, 2018 adjusted for the effect of IFRS 9 [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
144 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
145 Beginning balance Concept (Monetary) As Of Credit ifrs-full:Equity
146 Beginning balance, shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
147 Profit for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
148 Other comprehensive income (loss) Abstract ifrs-full:OtherComprehensiveIncomeAbstract
149 Re-measurement losses on defined benefit plans Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
150 Exchange differences on translation of foreign operations Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationNetOfTax
151 Total comprehensive income for the period Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
152 Reversal of unclaimed declared dividends to non-controlling interest upon expiration of limitation period Concept (Monetary) For Period Credit mtl:ReversalOfUnclaimedDeclaredDividendsToNoncontrollingInterestUponExpirationOfLimitationPeriod
153 Dividends declared to equity shareholders of Mechel PAO Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParent
154 Dividends declared to non-controlling interests Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
155 Acquisition of non-controlling interests Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl
156 Ending balance Concept (Monetary) As Of Credit ifrs-full:Equity
157 Ending balance, shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
158 1007 - Statement - Consolidated Statement of Cash Flows Network

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 http://www.mechel.com/taxonomy/role/StatementOfCashFlowsIndirectMethod-520000
159 Implied Table Table

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160 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
161 Cash flows from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
162 Profit for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
163 Less loss after tax for the period from discontinued operations, net Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
164 Profit for the period from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
165 Adjustments to reconcile profit from continuing operations to net cash provided by operating activities: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
166 Depreciation of property, plant and equipment Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
167 Amortisation of mineral licenses and other intangible assets Concept (Monetary) For Period Debit mtl:AmortisationOfMineralLicensesAndOtherIntangibleAssets
168 Foreign exchange (gain) loss, net Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
169 Deferred income tax (benefit) expense Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxExpense
170 Allowance for expected credit losses on financial assets Concept (Monetary) For Period Debit mtl:AllowanceForExpectedCreditLossesOnFinancialAssets
171 Write-off of trade and other receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
172 Write-off of inventories to net realisable value Concept (Monetary) For Period ifrs-full:InventoryWritedown2011
173 Revision in estimated cash flows of rehabilitation provision Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForProvisions
174 Loss on write-off of non-current assets Concept (Monetary) For Period ifrs-full:WritedownsReversalsOfPropertyPlantAndEquipment
175 Impairment of goodwill and other non-current assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
176 Net result from disposal of non-current assets Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment
177 Gain on sale of investments Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
178 Gain on restructuring and forgiveness of trade and other payables and write-off of trade and other payables with expired legal term Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
179 Effect of pension obligations Concept (Monetary) For Period Credit mtl:AdjustmentsToPensionObligations
180 Finance income Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForFinanceIncome
181 Finance costs including fines and penalties on overdue loans and borrowings and finance leases payments Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFinanceCosts
182 VEB commissions write-off Concept (Monetary) For Period Debit mtl:AdjustmentsForWriteoffCommissions
183 Gain on royalty and other proceeds associated with disposal of Bluestone Concept (Monetary) For Period Credit mtl:AdjustmentsForGainLossOnRoyaltyOtherPaymentsReceivedFromRelatedPartyTransactions
184 Provisions for legal claims, taxes and other provisions Concept (Monetary) For Period Credit mtl:ProvisionsForLegalClaimsOnTaxesAndOtherProvisions
185 Provision for non-recoverable advances to pension funds Concept (Monetary) For Period Credit mtl:ProvisionForNonrecoverableAdvancesToPensionFunds
186 Other Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities
187 Changes in working capital items: Abstract mtl:ChangeInWorkingCapitalAbstract
188 Trade and other receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables
189 Inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
190 Trade and other payables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables
191 Advances received Concept (Monetary) For Period Debit mtl:AdjustmentsForIncreaseDecreaseInAdvanceReceipts
192 Taxes payable and other liabilities Concept (Monetary) For Period Credit mtl:IncreaseDecreaseInAccruedTaxesAndOtherLiabilities
193 Other current assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets
194 Income tax paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidClassifiedAsOperatingActivities
195 Net operating cash flows from discontinued operations Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations
196 Net cash provided by operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
197 Cash flows from investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
198 Loans issued and other investments Concept (Monetary) For Period Credit ifrs-full:CashAdvancesAndLoansMadeToOtherPartiesClassifiedAsInvestingActivities
199 Interest received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsInvestingActivities
200 Royalty and other proceeds associated with disposal of Bluestone Concept (Monetary) For Period Debit mtl:RoyaltyPaymentsReceivedFromRelatedPartyTransactions
201 Proceeds from disposal of subsidiaries, net of cash disposed Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
202 Purchases of available for sale securities Concept (Monetary) For Period Credit ifrs-full:PurchaseOfAvailableforsaleFinancialAssets
203 Proceeds from loans issued and other investments Concept (Monetary) For Period Debit ifrs-full:CashReceiptsFromRepaymentOfAdvancesAndLoansMadeToOtherPartiesClassifiedAsInvestingActivities
204 Proceeds from disposals of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
205 Purchases of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
206 Purchases of intangible assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
207 Interest paid, capitalized Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsInvestingActivities
208 Net cash used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
209 Cash flows from financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
210 Proceeds from loans and borrowings, including proceeds from factoring arrangement of RUB 918 million, RUB 272 million and nil for the periods ended December 31, 2018, 2017 and 2016, respectively Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
211 Repayment of loans and borrowings, including payments from factoring arrangement of RUB 435 million, RUB 1,123 million and RUB 2,625 million for the periods ended December 31, 2018, 2017 and 2016, respectively Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
212 Repayment of other current financial liabilities Concept (Monetary) For Period Credit mtl:RepaymentOfOtherCurrentFinancialLiabilities
213 Dividends paid to shareholders of Mechel PAO Concept (Monetary) For Period Credit ifrs-full:DividendsPaidClassifiedAsFinancingActivities
214 Dividends paid to non-controlling interest Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities
215 Interest paid, including fines and penalties Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsFinancingActivities
216 Acquisition of non-controlling interests in subsidiaries Concept (Monetary) For Period Credit ifrs-full:PaymentsFromChangesInOwnershipInterestsInSubsidiaries
217 Proceeds from sales of 49% stakes in Elga coal complex, with put-option granted Concept (Monetary) For Period Debit ifrs-full:ProceedsFromChangesInOwnershipInterestsInSubsidiaries
218 Repayment of obligations under finance lease Concept (Monetary) For Period Credit ifrs-full:PaymentsOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
219 Deferred payments for acquisition of assets Concept (Monetary) For Period Credit mtl:DeferredPaymentsForAcquisitionOfAssets
220 Deferred consideration paid for the acquisition of subsidiaries in prior periods Concept (Monetary) For Period Credit ifrs-full:ConsiderationPaidReceived
221 Net cash used in financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
222 Foreign exchange loss (gain) on cash and cash equivalents, net Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
223 Allowance for expected credit losses on cash and cash equivalents Concept (Monetary) For Period Credit mtl:AllowanceForExpectedCreditLossesOnCashAndCashEquivalents
224 Net (decrease) increase in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
225 Cash and cash equivalents at beginning of period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
226 Cash and cash equivalents, net of overdrafts at beginning of period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition
227 Cash and cash equivalents at end of period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
228 Cash and cash equivalents, net of overdrafts at end of period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition
229 1008 - Statement - Consolidated Statement of Cash Flows (Parenthetical) Network

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 http://www.mechel.com/taxonomy/role/StatementOfCashFlowsIndirectMethod-520000Parenthetical
230 Implied Table Table

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231 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
232 Proceeds from factoring arrangement Concept (Monetary) For Period Debit mtl:ProceedsFromFactoringArrangementClassifiedAsFinancingActivities
233 Payments from factoring arrangement Concept (Monetary) For Period Credit mtl:PaymentsFromFactoringArrangementClassifiedAsFinancingActivities
234 Sale of 49% share in Elga coal complex, with put-option granted Concept (Percent) For Period mtl:PercentageOfEquityInterestsSoldByExercisingAnOption
235 1009 - Disclosure - Corporate information Network

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 http://www.mechel.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfNotesAndOtherExplanatoryInformationExplanatory
236 Implied Table Table

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237 Text block [abstract] Abstract mtl:TextBlockAbstract
238 Corporate information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNotesAndOtherExplanatoryInformationExplanatory
239 1010 - Disclosure - Basis of preparation of the consolidated financial statements Network

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 http://www.mechel.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
240 Implied Table Table

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241 Text block [abstract] Abstract mtl:TextBlockAbstract
242 Basis of preparation of the consolidated financial statements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
243 1011 - Disclosure - Summary of significant accounting policies Network

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 http://www.mechel.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory
244 Implied Table Table

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245 Text block [abstract] Abstract mtl:TextBlockAbstract
246 Summary of significant accounting policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory
247 1012 - Disclosure - Going concern Network

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 http://www.mechel.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfGoingConcernExplanatory
248 Implied Table Table

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249 Text block [abstract] Abstract mtl:TextBlockAbstract
250 Going concern Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGoingConcernExplanatory
251 1013 - Disclosure - Capital management Network

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252 Implied Table Table

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253 Text block [abstract] Abstract mtl:TextBlockAbstract
254 Capital management Concept (Text Block (HTML)) For Period mtl:DisclosureOfCapitalManagementExplanatory
255 1014 - Disclosure - Business combinations and changes in non-controlling interests Network

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 http://www.mechel.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfBusinessCombinationsExplanatory
256 Implied Table Table

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257 Text block [abstract] Abstract mtl:TextBlockAbstract
258 Business combinations and changes in non-controlling interests Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBusinessCombinationsExplanatory
259 1015 - Disclosure - Material partly-owned subsidiaries Network

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260 Implied Table Table

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261 Investments accounted for using equity method [abstract] Abstract ifrs-full:InvestmentsAccountedForUsingEquityMethodAbstract
262 Material partly-owned subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory
263 1016 - Disclosure - Investments in associates Network

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264 Implied Table Table

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265 Investments accounted for using equity method [abstract] Abstract ifrs-full:InvestmentsAccountedForUsingEquityMethodAbstract
266 Investments in associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInAssociatesExplanatory
267 1017 - Disclosure - Related party disclosures Network

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268 Implied Table Table

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269 Text block [abstract] Abstract mtl:TextBlockAbstract
270 Related party disclosures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
271 1018 - Disclosure - Fair value measurement Network

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272 Implied Table Table

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273 Text block [abstract] Abstract mtl:TextBlockAbstract
274 Fair value measurement Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementExplanatory
275 1019 - Disclosure - Financial assets and financial liabilities Network

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276 Implied Table Table

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277 Text block [abstract] Abstract mtl:TextBlockAbstract
278 Financial assets and financial liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory
279 1020 - Disclosure - Inventories Network

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280 Implied Table Table

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281 Text block [abstract] Abstract mtl:TextBlockAbstract
282 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
283 1021 - Disclosure - Trade and other receivables Network

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284 Implied Table Table

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285 Text block [abstract] Abstract mtl:TextBlockAbstract
286 Trade and other receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
287 1022 - Disclosure - Other current and non-current assets Network

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288 Implied Table Table

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289 Text block [abstract] Abstract mtl:TextBlockAbstract
290 Other current and non-current assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherAssetsExplanatory
291 1023 - Disclosure - Cash and cash equivalents Network

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292 Implied Table Table

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293 Text block [abstract] Abstract mtl:TextBlockAbstract
294 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
295 1024 - Disclosure - Property, plant and equipment Network

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296 Implied Table Table

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297 Text block [abstract] Abstract mtl:TextBlockAbstract
298 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
299 1025 - Disclosure - Intangible assets Network

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300 Implied Table Table

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301 Text block [abstract] Abstract mtl:TextBlockAbstract
302 Intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsExplanatory
303 1026 - Disclosure - Impairment of goodwill and other non-current assets Network

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304 Implied Table Table

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305 Text block [abstract] Abstract mtl:TextBlockAbstract
306 Impairment of goodwill and other non-current assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfImpairmentOfAssetsExplanatory
307 1027 - Disclosure - Trade and other payables Network

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308 Implied Table Table

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309 Text block [abstract] Abstract mtl:TextBlockAbstract
310 Trade and other payables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
311 1028 - Disclosure - Income tax Network

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312 Implied Table Table

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313 Text block [abstract] Abstract mtl:TextBlockAbstract
314 Income tax Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
315 1029 - Disclosure - Taxes and similar charges payable other than income tax Network

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316 Implied Table Table

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317 Text block [abstract] Abstract mtl:TextBlockAbstract
318 Taxes and similar charges payable other than income tax Concept (Text Block (HTML)) For Period mtl:DisclosureOfCurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTaxExplanatory
319 1030 - Disclosure - Pensions and other post-employment benefit plans Network

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320 Implied Table Table

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321 Text block [abstract] Abstract mtl:TextBlockAbstract
322 Pensions and other post-employment benefit plans Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
323 1031 - Disclosure - Provisions Network

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324 Implied Table Table

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325 Text block [abstract] Abstract mtl:TextBlockAbstract
326 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProvisionsExplanatory
327 1032 - Disclosure - Issued capital and reserves Network

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328 Implied Table Table

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329 Text block [abstract] Abstract mtl:TextBlockAbstract
330 Issued capital and reserves Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
331 1033 - Disclosure - Other income/expenses Network

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332 Implied Table Table

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333 Text block [abstract] Abstract mtl:TextBlockAbstract
334 Other income/expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory
335 1034 - Disclosure - Segment information Network

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336 Implied Table Table

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337 Text block [abstract] Abstract mtl:TextBlockAbstract
338 Segment information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
339 1035 - Disclosure - Operating lease commitments Network

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340 Implied Table Table

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341 Text block [abstract] Abstract mtl:TextBlockAbstract
342 Operating lease commitments Concept (Text Block (HTML)) For Period mtl:DisclosureOfOperatingLeaseCommitmentExplanatory
343 1036 - Disclosure - Events after the reporting period Network

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344 Implied Table Table

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345 Text block [abstract] Abstract mtl:TextBlockAbstract
346 Events after the reporting period Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
347 1037 - Disclosure - Summary of significant accounting policies (Policies) Network

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348 Implied Table Table

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349 Text block [abstract] Abstract mtl:TextBlockAbstract
350 Business combinations and goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory
351 Investments in associates Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociates
352 Current versus non-current classification Concept (Text Block (HTML)) For Period mtl:DescriptionOfAccountingPolicyForCurrentVersusNonCurrentClassificationExplanatory
353 Fair value measurement Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory
354 Revenue from contracts with customers Concept (Text Block (HTML)) For Period mtl:DescriptionOfAccountingPolicyForRevenueFromContractsWithCustomersExplanatory
355 Taxes Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
356 Foreign currencies Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
357 Non-current assets held for sale and discontinued operations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory
358 Mineral licenses Concept (Text Block (HTML)) For Period mtl:DescriptionOfAccountingPolicyForMineralLicensesExplanatory
359 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
360 Leases Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
361 Borrowing costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
362 Intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory
363 Financial instruments - initial recognition and subsequent measurement Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory
364 Derivative financial instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory
365 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
366 Impairment of non-current assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory
367 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
368 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
369 Pensions and other post-employment benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
370 Significant accounting judgments, estimates and assumptions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
371 Reclassifications and rounding Concept (Text Block (HTML)) For Period mtl:DescriptionOfAccountingPolicyForReclassificationsAndRoundingsOfAmountsExplanatory
372 New and amended standards and interpretations adopted by the Group Concept (Text Block (HTML)) For Period mtl:DescriptionOfAccountingPolicyForNewAndAmendedStandardsAndInterpretationsExplanatory
373 1038 - Disclosure - Corporate information (Tables) Network

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374 Implied Table Table

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375 Text block [abstract] Abstract mtl:TextBlockAbstract
376 Summary of Corporate Information Concept (Text Block (HTML)) For Period mtl:DisclosureOfCorporateInformationExplanatory
377 1039 - Disclosure - Summary of significant accounting policies (Tables) Network

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378 Implied Table Table

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379 Text block [abstract] Abstract mtl:TextBlockAbstract
380 Summary of Exchange Rates for the Functional and Operating Currencies Concept (Text Block (HTML)) For Period mtl:DisclosureOfExchangeRatesForFunctionalAndOperatingCurrenciesAtVariousSubsidiariesOtherThanPresentationCurrencyExplanatory
381 Summary of Useful Lives Concept (Text Block (HTML)) For Period mtl:DisclosureOfPropertyPlantAndEquipmentUsefulLivesExplanatory
382 Summary of Impact of IFRS 16 on Consolidated Statemtent of Financial Position Concept (Text Block (HTML)) For Period mtl:DisclosureOfImpactOfAdoptionOfIfrsOnFinancialPositionExplanatoryExplanatory
383 1040 - Disclosure - Capital management (Tables) Network

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384 Implied Table Table

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385 Text block [abstract] Abstract mtl:TextBlockAbstract
386 Summary of Covenant Ratios under Most Significant Loan Agreements with the Russian State-Owned Banks Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailInformationAboutCovenantRatiosExplanatory
387 1041 - Disclosure - Business combinations and changes in non-controlling interests (Tables) Network

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388 Implied Table Table

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389 Text block [abstract] Abstract mtl:TextBlockAbstract
390 Summary of Changes in Non-controlling Interests Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncontrollingInterestsExplanatory
391 1042 - Disclosure - Material partly-owned subsidiaries (Tables) Network

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392 Statement [table] Table

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393 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
394 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
395 Subsidiaries with Material Non-controlling Interests [Member] Member ifrs-full:SubsidiariesWithMaterialNoncontrollingInterestsMember
396 Statement [LineItems] LineItems mtl:StatementLineItems
397 Summary of Financial Information of Subsidiaries Concept (Text Block (HTML)) For Period mtl:DisclosureOfProportionOfEquityInterestHeldByNoncontrollingInterestsExplanatory
398 Summary of Financial Information of Subsidiaries Concept (Text Block (HTML)) For Period mtl:DisclosureOfSummarizedFinancialInformationOfSubsidiariesExplanatory
399 1043 - Disclosure - Investments in associates (Tables) Network

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400 Implied Table Table

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401 Investments accounted for using equity method [abstract] Abstract ifrs-full:InvestmentsAccountedForUsingEquityMethodAbstract
402 Summary of Investments in Associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesExplanatory
403 Summary of Movements in the Investments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEffectOfChangeOfInvestmentEntityStatusOnFinancialStatementsExplanatory
404 1044 - Disclosure - Related party disclosures (Tables) Network

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405 Implied Table Table

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406 Text block [abstract] Abstract mtl:TextBlockAbstract
407 Summary of Transactions with Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
408 Summary of Settlement with Related Parties Concept (Text Block (HTML)) For Period mtl:DisclosureOfFinancialAssetsAndFinancialLiabilitiesArisingFromRelatedPartyTransactionsExplanatory
409 1045 - Disclosure - Fair value measurement (Tables) Network

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410 Implied Table Table

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411 Text block [abstract] Abstract mtl:TextBlockAbstract
412 Summary of Comparison By Class of Carrying Amount and Fair Value of Group Financial Instruments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesExplanatory
413 1046 - Disclosure - Financial assets and financial liabilities (Tables) Network

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414 Implied Table Table

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415 Text block [abstract] Abstract mtl:TextBlockAbstract
416 Schedule Of Principal And Interest Amounts Outstanding For Loans And Bonds Concept (Text Block (HTML)) For Period mtl:DisclosureOfPrincipalAndInterestAmountsOutstandingForLoansAndBondsExplanatory
417 Scheduled Maturities of the Debt Outstanding Concept (Text Block (HTML)) For Period mtl:DisclosureOfMaturitiesOfDebtOutstandingExplanatory
418 Summary of Outstanding Balances of Principal Amount of Short-term and Long-term Debt by Denominated Currencies and Major Banks Concept (Text Block (HTML)) For Period mtl:DisclosureOfOutstandingBalancesOfPrincipalAmountOfShorttermAndLongtermDebtByDenominatedCurrenciesAndMajorBanksExplanatory
419 Schedule of Information About Ratios Under Most Significant Loan Agreements Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailedInformationAboutRatiosUnderMostSignificantLoanAgreementsExplanatory
420 Schedule of Information About Remaining Contractual Maturities of Non-derivative Financial Liabilities Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailInformationAboutRemainingContractualMaturitiesOfNonderivativeFinancialLiabilitiesExplanatory
421 Schedule of Information About Maximum Exposure to Credit Risk Arising from Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCreditRiskExposureExplanatory
422 Schedule of Information About Foreign Currency Risk Arising from Recognized Assets and Liabilities Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailedInformationAboutForeignCurrencyRiskArisingFromRecognizedAssetsAndLiabilitiesExplanatory
423 Schedule of Information About Sensitivity to Devaluation Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailedInformationAboutSensitivityToDevaluationExplanatory
424 Schedule of Information About Sensitivity to Change of Floating Rates Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailedInformationAboutSensitivityToChangeOfFloatingRatesExplanatory
425 Summary of Future Minimum Lease Payments under Finance Leases Together with Present Value of Net Minimum Lease Payments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfMaturityAnalysisOfFinanceLeasePaymentsReceivableExplanatory
426 1047 - Disclosure - Inventories (Tables) Network

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427 Implied Table Table

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428 Text block [abstract] Abstract mtl:TextBlockAbstract
429 Summary of Inventories Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailedInformationAboutInventoriesExplanatory
430 1048 - Disclosure - Trade and other receivables (Tables) Network

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431 Implied Table Table

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432 Text block [abstract] Abstract mtl:TextBlockAbstract
433 Summary of Trade and Other Receivables Concept (Text Block (HTML)) For Period mtl:DisclosureDetailedInformationOfTradeAndOtherReceivablesExplanatory
434 Summary of Credit Risk Exposure on Trade Receivables Concept (Text Block (HTML)) For Period mtl:DisclosureOfCreditRiskExposureForTradeReceivablesExplanatory
435 Summary of Movements in Allowance for Expected Credit Losses on Trade and Other Receivables Concept (Text Block (HTML)) For Period mtl:DisclosureOfMovementsInProvisionForAllowancesForExpectedCreditLossesExplanatory
436 1049 - Disclosure - Other current and non-current assets (Tables) Network

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437 Statement [table] Table

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438 Classes of Assets [Axis] Axis ifrs-full:ClassesOfAssetsAxis
439 Assets [member] Member ifrs-full:ClassesOfAssetsMember
440 Other Current and Non-Current Assets [Member] Member mtl:OtherCurrentAndNonCurrentAssetsMember
441 Statement [LineItems] LineItems mtl:StatementLineItems
442 Schedule of Other Current and Non-Current Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPrepaymentsAndOtherAssetsExplanatory
443 1050 - Disclosure - Cash and cash equivalents (Tables) Network

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444 Implied Table Table

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445 Text block [abstract] Abstract mtl:TextBlockAbstract
446 Summary of Cash and Cash Equivalents Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory
447 Reconciliation Between the Changes in Liabilities Arising from Financing Activities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory
448 1051 - Disclosure - Property, plant and equipment (Tables) Network

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449 Implied Table Table

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450 Text block [abstract] Abstract mtl:TextBlockAbstract
451 Summary of Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
452 Schedule of Property, Plant and Equipment Assets Pledged to Secure Bank Loans and Borrowings Granted to Group Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentPledgedToSecureBankLoansAndBorrowingsGrantedExplanatory
453 Schedule of Ownership of Assets or Option to Purchase Leased Assets at Bargain Price Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRecognisedFinanceLeaseAsAssetsByLesseeExplanatory
454 1052 - Disclosure - Intangible assets (Tables) Network

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455 Implied Table Table

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456 Text block [abstract] Abstract mtl:TextBlockAbstract
457 Schedule of Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory
458 1053 - Disclosure - Impairment of goodwill and other non-current assets (Tables) Network

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459 Statement [table] Table

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460 Classes of Assets [Axis] Axis ifrs-full:ClassesOfAssetsAxis
461 Assets [member] Member ifrs-full:ClassesOfAssetsMember
462 Non-current assets [member] Member mtl:NonCurrentAssetsMember
463 Non-current assets individually impaired [member] Member mtl:NoncurrentAssetsIndividuallyImpairedMember
464 Statement [LineItems] LineItems mtl:StatementLineItems
465 Summary of Goodwill Acquired Through Business Combinations Allocated to CGUs for Impairment Testing Concept (Text Block (HTML)) For Period mtl:DisclosureOfAllocationOfGoodwillForImpairmentTestingExplanatory
466 Summary of Inflation and Discount Rates, Range of Discount Rates, Estimated for Each Year for Forecasted Period Concept (Text Block (HTML)) For Period mtl:DisclosureOfInflationAndDiscountRatesRangeOfDiscountRatesEstimatedForEachYearForForecastedPeriodExplanatory
467 Summary of Carrying Value of Individual Items of Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory
468 1054 - Disclosure - Trade and other payables (Tables) Network

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469 Implied Table Table

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470 Text block [abstract] Abstract mtl:TextBlockAbstract
471 Schedule of Trade and Other Payables Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailedOfInformationAboutTradeAndOtherPayablesExplanatory
472 Summary of Other Payables Concept (Text Block (HTML)) For Period mtl:DisclosureOfDetailedInformationAboutOtherPayablesExplanatory
473 1055 - Disclosure - Income tax (Tables) Network

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474 Implied Table Table

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475 Text block [abstract] Abstract mtl:TextBlockAbstract
476 Schedule of Major Components of Income Tax Expense Concept (Text Block (HTML)) For Period mtl:DisclosureOfComponentsOfIncomeTaxExplanatory
477 Schedule of Reconciliation Related to Income Tax Expense Concept (Text Block (HTML)) For Period mtl:DisclosureOfReconciliationOfEffectiveTaxRateExplanatory
478 Schedule of Deferred Tax Assets and Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredTaxesExplanatory
479 Schedule of Deferred Tax Assets and Liabilities Recognized Concept (Text Block (HTML)) For Period mtl:DisclosureOfDeferredTaxAssetsAndLiabilitiesBeforeOffsetExplanatory
480 1056 - Disclosure - Taxes and similar charges payable other than income tax (Tables) Network

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481 Implied Table Table

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482 Text block [abstract] Abstract mtl:TextBlockAbstract
483 Schedule of Taxes and Similar Charges Payable Other than Income Tax Concept (Text Block (HTML)) For Period mtl:CurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTaxExplanatory
484 1057 - Disclosure - Pensions and other post-employment benefit plans (Tables) Network

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485 Implied Table Table

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486 Text block [abstract] Abstract mtl:TextBlockAbstract
487 Schedule of Changes in Present Value of the Defined Benefit Obligations and Other Long-term Benefits and Fair Value of Plan Assets Concept (Text Block (HTML)) For Period mtl:DisclosureOfPresentValueOfTheDefinedBenefitObligationsAndOtherLongTermBenefitsAndFairValueOfPlanAssetsExplanatory
488 Schedule of Pension Obligations Recognized in Consolidated Statement of Financial Position Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
489 Schedule of Plan Asset Allocation of Investment Portfolio Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory
490 Schedule of Key Actuarial Assumptions Used to Determine Benefit Obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory
491 Schedule of Sensitivity Analysis of Defined Benefit Obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
492 1058 - Disclosure - Provisions (Tables) Network

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493 Implied Table Table

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494 Text block [abstract] Abstract mtl:TextBlockAbstract
495 Summary of Provisions Concept (Text Block (HTML)) For Period mtl:DisclosureOfProvisionsExplanatory1
496 1059 - Disclosure - Other income/expenses (Tables) Network

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497 Implied Table Table

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498 Text block [abstract] Abstract mtl:TextBlockAbstract
499 Summary of General, Administrative and Other Operating Expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralAndAdministrativeExpenseExplanatory
500 Summary of Employee Benefits Expenses Concept (Text Block (HTML)) For Period mtl:DisclosureOfEmployeeBenefitExpensesExplanatory
501 Summary of Other Operating Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExplanatory
502 Summary of Finance Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceIncomeExplanatory
503 Summary of Finance Costs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceCostExplanatory
504 Summary of Other Income Concept (Text Block (HTML)) For Period mtl:DisclosureOfOtherIncomeExplanatory
505 Summary of Other Expenses Concept (Text Block (HTML)) For Period mtl:DisclosureOfOtherExpenseExplanatory
506 1060 - Disclosure - Segment information (Tables) Network

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507 Implied Table Table

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508 Text block [abstract] Abstract mtl:TextBlockAbstract
509 Summary of Operating Results by Segments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOperatingSegmentsExplanatory
510 Summary of Group's Revenues Segregated Between Domestic and Export Sales Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeographicalAreasExplanatory
511 Summary of Group's Total Revenues from External Customers by Geographic Area Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSegmentsMajorCustomersExplanatory
512 Summary of Carrying Amounts of Mineral Licenses and Property, Plant and Equipment Pertaining to Group's Major Operations Concept (Text Block (HTML)) For Period mtl:DisclosureOfCarryingAmountsOfPropertyPlantAndEquipmentPertainingToGroupMajorOperationsExplanatory
513 Summary of Group's Revenues from External Customers by Major Products Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProductsAndServicesExplanatory
514 1061 - Disclosure - Operating lease commitments (Tables) Network

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515 Implied Table Table

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516 Text block [abstract] Abstract mtl:TextBlockAbstract
517 Summary of Future Minimum Rentals Payable under Non-Cancellable Operating Leases Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsExplanatory
518 1062 - Disclosure - Corporate Information - Summary of Corporate Information (Detail) Network

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519 Disclosure of Description Of Reporting Entity [table] Table

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520 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
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522 Southern Kuzbass Coal Company (SKCC) [member] Member mtl:SouthernKuzbassCoalCompanyMember
523 Chelyabinsk Metallurgical Plant (CMP) [member] Member mtl:ChelyabinskMetallurgicalPlantMember
524 Vyartsilya Metal Products Plant (VMPP) [member] Member mtl:VyartsilyaMetalProductsPlantMember
525 Beloretsk Metallurgical Plant (BMP) [member] Member mtl:BeloretskMetallurgicalPlantMember
526 Urals Stampings Plant (USP) [member] Member mtl:UralsStampingsPlantMember
527 Korshunov Mining Plant (KMP) [member] Member mtl:KorshunovMiningPlantMember
528 Mechel Nemunas (MN) [member] Member mtl:MechelNemunasMember
529 Mechel Energo [member] Member mtl:MechelEnergoMember
530 Port Posiet [member] Member mtl:PortPosietMember
531 Izhstal [member] Member mtl:IzhstalMember
532 Port Kambarka [member] Member mtl:PortKambarkaMember
533 Mechel Service [member] Member mtl:MechelServiceMember
534 Mechel Coke [member] Member mtl:MechelCokeMember
535 Moscow Coke and Gas Plant (Moskoks) [member] Member mtl:MoscowCokeAndGasPlantMember
536 Southern Kuzbass Power Plant (SKPP) [member] Member mtl:SouthernKuzbassPowerPlantMember
537 Kuzbass Power Sales Company (KPSC) [member] Member mtl:KuzbassPowerSalesCompanyMember
538 Bratsk Ferroalloy Plant (BFP) [member] Member mtl:BratskFerroalloyPlantMember
539 Yakutugol [member] Member mtl:YakutugolMember
540 Port Temryuk [member] Member mtl:PortTemryukMember
541 Mechel Carbon AG [member] Member mtl:MechelCarbonAGMember
542 HBL Holding GmbH (HBL) [member] Member mtl:HBLHoldingGmbHMember
543 Mechel Service Stahlhandel Austria GmbH and its subsidiaries [member] Member mtl:MechelServiceStahlhandelAustriaGmbhAndItsSubsidiariesMember
544 Elgaugol [member] Member mtl:ElgaugolMember
545 Elga-road [member] Member mtl:ElgaroadMember
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548 Russia [member] Member country:RU
549 Lithuania [member] Member country:LT
550 Switzerland [member] Member country:CH
551 Germany [member] Member country:DE
552 Austria [member] Member country:AT
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556 Steel products [member] Member mtl:SteelProductsMember
557 Iron ore mining [member] Member mtl:IronOreMiningMember
558 Power generation and sale [member] Member mtl:PowerGenerationAndSaleMember
559 Transshipment [member] Member mtl:TransshipmentMember
560 Trading [member] Member mtl:TradingMember
561 Coke production [member] Member mtl:CokeProductionMember
562 Power generation [member] Member mtl:PowerGenerationMember
563 Ferrosilicon production [member] Member mtl:FerrosiliconProductionMember
564 Railroad transportation [member] Member mtl:RailroadTransportationMember
565 Types of Rate-Regulated Activities [Axis] Axis ifrs-full:TypesOfRateregulatedActivitiesAxis
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567 Electricity distribution [member] Member ifrs-full:ElectricityDistributionMember
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569 Date control acquired / date of incorporation Concept (Year/Month) For Period mtl:DateOfControlOfAcquisitionAndIncorporation
570 Interest in voting stock held by the Group Concept (Percent) For Period ifrs-full:ProportionOfVotingPowerHeldInSubsidiary
571 1063 - Disclosure - Corporate Information - Summary of Corporate Information (Parenthetical) (Detail) Network

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572 Disclosure of Description Of Reporting Entity [table] Table

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573 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
574 Counterparties [member] Member ifrs-full:CounterpartiesMember
575 Gazprombank [member] Member mtl:GazprombankMember
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577 Percentage of shares disposed Concept (Percent) For Period mtl:PercentageOfEquityInterestsSoldByExercisingAnOption
578 Percentage of stock granted for sale Concept (Percent) For Period mtl:PercentageOfStockGrantedForSale
579 Percentage based on which Elgaugol and Elga-road are consolidated Concept (Percent) For Period mtl:AggregateOwnershipPercentage
580 1064 - Disclosure - Summary of Significant Accounting Policies - Summary of Exchange Rates for the Functional and Operating Currencies (Detail) Network

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581 Disclosure Of Exchange Rates For The Functional And Operating Currencies At Various Subsidiaries Other Than The Presentation Currency [table] Table

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584 U.S. dollars [member] Member currency:USD
585 Euro [member] Member currency:EUR
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587 Rates at Concept (Decimal) As Of ifrs-full:ClosingForeignExchangeRate
588 Average exchange rates Concept (Decimal) For Period ifrs-full:AverageForeignExchangeRate
589 1065 - Disclosure - Summary of Significant Accounting Policies - Summary of Useful Lives (Detail) Network

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590 Disclosure of Detailed Information about Property, Plant and Equipment [Table] Table

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596 Property, Plant and Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
597 Buildings and constructions [member] Member mtl:BuildingAndConstructionsMember
598 Operating machinery and equipment [member] Member mtl:OperatingMachineryAndEquipmentMember
599 Transportation vehicles [member] Member mtl:TransportationVehiclesMember
600 Other equipment [member] Member mtl:OtherEquipmentMember
601 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
602 Useful economic lives estimates Concept (xbrli:durationItemType) For Period mtl:EstimatedUsefulLife
603 1066 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) Network

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604 Disclosure of detailed information about intangible assets [table] Table

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608 Top of range [member] Member ifrs-full:TopOfRangeMember
609 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
610 New IFRSs [member] Member ifrs-full:NewIFRSsMember
611 The impact of IFRS 9 adoption [member] Member ifrs-full:InAccordanceWithIFRS9Member
612 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
613 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
614 Non-taxable income right [member] Member mtl:NontaxableIncomeRightMember
615 Transfer pricing [member] Member mtl:TransferPricingMember
616 Scenario [axis] Axis mtl:ScenarioAxis
617 Scenario [domain] Member mtl:ScenarioDomain
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620 Intangible assets useful lives Concept (xbrli:durationItemType) For Period mtl:IntangibleAssetsWithEstimatedUsefulLife
621 Russian pension fund contribution rate Concept (Percent) For Period mtl:RussianPensionFundContributionRate
622 Maximum contribution per employee annual salary percentage Concept (Percent) For Period mtl:MaximumContributionPerEmployeeAnnualSalaryPercentage
623 Annual gross salary Concept (Monetary) For Period Debit mtl:AnnualGrossSalary
624 Transaction with related party Concept (Monetary) As Of Credit mtl:TurnoverWithRelatedParties
625 Percentage of controlling interest in foreign corporation to be recognized as controlled foreign corporation Concept (Percent) For Period mtl:PercentageOfControllingInterestInForeignCorporation
626 Amount of non-taxable income Concept (Monetary) For Period Credit mtl:AmountOfNontaxableIncome
627 Increase in loans and borrowings Concept (Monetary) For Period Credit mtl:IncreaseInLoansAndBorrowings
628 Decrease in deferred tax liabilities Concept (Monetary) For Period Debit mtl:DecreaseInDeferredTaxLiabilities
629 Decrease in accumulated deficit Concept (Monetary) For Period Debit mtl:DecreaseInRetainedEarnings
630 Decrease in non-controlling interests Concept (Monetary) For Period Debit mtl:DecreaseInNoncontrollingInterests
631 Weighted average incremental borrowing rate Concept (Percent) As Of ifrs-full:WeightedAverageLesseesIncrementalBorrowingRateAppliedToLeaseLiabilitiesRecognisedAtDateOfInitialApplicationOfIFRS16
632 1067 - Disclosure - Summary of Significant Accounting Policies - Summary of Impact of IFRS 16 on Consolidated Statemtent of Financial Position (Detail) Network

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633 Disclosure of changes in financial position [table] Table

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635 New IFRSs [member] Member ifrs-full:NewIFRSsMember
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637 Disclosure of changes in financial position [line items] LineItems mtl:DisclosureOfChangesInFinancialPositionLineItems
638 Assets Abstract ifrs-full:AssetsAbstract
639 Property, plant and equipment (right-of-use assets) Concept (Monetary) As Of Debit mtl:PropertyPlantAndEquipmentRightofuseAssets
640 Deferred tax asset Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
641 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
642 Liabilities Abstract ifrs-full:LiabilitiesAbstract
643 Non-current lease liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLeaseLiabilities
644 Current lease liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLeaseLiabilities
645 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
646 Net impact on equity Concept (Monetary) As Of Credit ifrs-full:Equity
647 1068 - Disclosure - Going Concern - Additional Information (Detail) Network

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648 Disclosure Of Going Concern [table] Table

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649 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
650 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
651 Credit facility [member] Member mtl:CreditFacilityMember
652 Disclosure of going concern [line items] LineItems mtl:DisclosureOfGoingConcernLineItems
653 Amount of groups total liabilities exceeded total assets Concept (Monetary) As Of Credit mtl:AmountOfGroupsTotalLiabilitiesExceededTotalAssets
654 Loan amount Concept (Monetary) As Of Credit ifrs-full:Borrowings
655 Short term debt Concept (Monetary) As Of Credit ifrs-full:LoansPayableInBreachWhichPermittedLenderToDemandAcceleratedRepayment
656 Long-term debt classified as short-term debt Concept (Monetary) As Of Credit mtl:AmountReclassifiedFromLongTermToShortTerm
657 Accrued fines and penalties Concept (Monetary) As Of Credit mtl:FinesAndPenaltiesOnOverdueAmounts
658 1069 - Disclosure - Capital Management - Summary of Covenant Ratios under Most Significant Loan Agreements with the Russian State-Owned Banks (Detail) Network

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659 Disclosure Of Covenant Ratios [table] Table

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660 Capital requirements [axis] Axis ifrs-full:CapitalRequirementsAxis
661 Capital requirements [member] Member ifrs-full:CapitalRequirementsMember
662 Mechel's EBITDA to Net Interest Expense [member] Member mtl:EBITDAToNetInterestExpenseMember
663 Mechel's EBITDA to Consolidated Financial Expense [member] Member mtl:EBITDAToConsolidatedFinancialExpenseMember
664 Mechel's Net Debt to EBITDA [member] Member mtl:NetDebtToEBITDAMember
665 Mechel's Total Debt to EBITDA [member] Member mtl:TotalDebtToEBITDAMember
666 Mechel's Cash flow from operating activities to EBITDA [member] Member mtl:OperatingCashFlowToEBITDAMember
667 Mechel's EBITDA to Revenue [member] Member mtl:EBITDAToRevenueMember
668 Range [axis] Axis ifrs-full:RangeAxis
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673 Requirement ratio Concept (Percent) For Period mtl:DebtInstrumentCovenantsRequirementRatio
674 Actual ratio Concept (Percent) For Period mtl:DebtInstrumentCovenantsActualRatio
675 1070 - Disclosure - Capital Management - Additional Information (Detail) Network

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676 Disclosure of objectives, policies and processes for managing capital [table] Table

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677 Categories of Related Parties [Axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
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679 Elga coal complex [member] Member mtl:ElgaCoalComplexMember
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681 Percentage of shares disposed Concept (Percent) For Period mtl:PercentageOfEquityInterestsSoldByExercisingAnOption
682 Proceeds from sale of shares in subsidiaries Concept (Monetary) For Period Debit mtl:ProceedsFromSaleOfSharesInSubsidiaries
683 1071 - Disclosure - Business Combinations and Changes in Non-Controlling Interests - Additional Information (Detail) Network

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684 Disclosure of detailed information about business combination [table] Table

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686 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
687 Daveze Ltd [member] Member mtl:DavezeLtdMember
688 DEMP [member] Member mtl:DEMPMember
689 Categories of Related Parties [Axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
690 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
691 Elga coal complex [member] Member mtl:ElgaCoalComplexMember
692 Gazprombank [member] Member mtl:GazprombankMember
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697 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
698 Business combinations acquired Concept (Decimal) As Of ifrs-full:NumberOfInstrumentsOrInterestsIssuedOrIssuable
699 Percentage of shares acquired Concept (Percent) As Of mtl:PercentageOfEquityInterestAcquired
700 Purchase consideration Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
701 Percentage of shares disposed Concept (Percent) For Period mtl:PercentageOfEquityInterestsSoldByExercisingAnOption
702 Proceeds from sale of voting shares in subsidiaries Concept (Monetary) For Period Debit mtl:ProceedsFromSaleOfSharesInSubsidiaries
703 Key rate of Central Bank of Russia Concept (Percent) For Period mtl:PercentageOfInterestRateOfOptionAtKeyRate
704 Option exercise period Concept (xbrli:durationItemType) For Period mtl:OptionExercisePeriod
705 Agreement grace period Concept (xbrli:durationItemType) For Period mtl:AgreementGracePeriod
706 Percentage of acquisition of control in Elga Complex and Port Vanino Concept (Percent) For Period mtl:PercentageOfRigsthsAcuiredByExcercisingCallOption
707 Percentage of shares pledged Concept (Percent) As Of mtl:PercentageOfSharesPledged
708 1072 - Disclosure - Business Combinations and Changes in Non-Controlling Interests - Summary of Changes in Non-Controlling Interests (Detail) Network

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709 Disclosure of detailed information about business combination [table] Table

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710 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
711 Currently stated [member] Member ifrs-full:RestatedMember
712 As of January 1, 2018 adjusted for the effect of IFRS 9 [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
713 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
714 Balance as of beginning of period Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
715 Adjustment on initial application of IFRS 9 Concept (Monetary) For Period Credit mtl:AdjustmentOnInitialApplicationOfNewIfrsOnNoncontrollingInterests
716 Change in non-controlling interests in existing subsidiaries of the Group Concept (Monetary) For Period Debit mtl:ChangeOfNoncontrollingInterestInExistingSubsidiaries
717 Reversal of unclaimed declared dividends to non-controlling interests upon expiration of limitation period Concept (Monetary) For Period Credit mtl:ReversalOfUnclaimedDeclaredDividendsToNoncontrollingInterestUponExpirationOfLimitationPeriod
718 Dividends declared to non-controlling interests Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
719 Profit for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
720 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeAttributableToNoncontrollingInterests
721 Balance as of end of period Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
722 1073 - Disclosure - Material Partly-Owned Subsidiaries - Summary of Financial Information of Subsidiaries (Detail) Network

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723 Disclosure of subsidiaries [table] Table

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724 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
725 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
726 Southern Kuzbass Coal Company (SKCC) and subsidiaries [member] Member mtl:SkCCAndSubsidiariesMember
727 Kuzbass Power Sales Company (KPSC) [member] Member mtl:KuzbassPowerSalesCompanyMember
728 Chelyabinsk Metallurgical Plant (CMP) [member] Member mtl:ChelyabinskMetallurgicalPlantMember
729 Southern Urals Nickel Plant (SUNP) [member] Member mtl:SouthernUralsNickelPlantMember
730 Beloretsk Metallurgical Plant (BMP) [member] Member mtl:BeloretskMetallurgicalPlantMember
731 Korshunov Mining Plant (KMP) [member] Member mtl:KorshunovMiningPlantMember
732 Urals Stampings Plant (USP) [member] Member mtl:UralsStampingsPlantMember
733 Izhstal [member] Member mtl:IzhstalMember
734 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
735 Proportion of equity interest held by non-controlling interests Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
736 1074 - Disclosure - Material Partly-Owned Subsidiaries - Additional Information (Detail) Network

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737 Disclosure of subsidiaries [table] Table

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738 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
739 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
740 Southern Urals Nickel Plant (SUNP) [member] Member mtl:SouthernUralsNickelPlantMember
741 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
742 Profit allocated to SUNP non-controlling interest Concept (Monetary) For Period Credit mtl:ProfitLossAllocatedToNoncontrollingInterests
743 1075 - Disclosure - Material Partly-Owned Subsidiaries - Summary of Statements of Profit and Other Comprehensive Income (Detail) Network

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744 Disclosure of subsidiaries [table] Table

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745 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
746 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
747 Southern Kuzbass Coal Company (SKCC) and subsidiaries [member] Member mtl:SkCCAndSubsidiariesMember
748 Kuzbass Power Sales Company (KPSC) [member] Member mtl:KuzbassPowerSalesCompanyMember
749 Chelyabinsk Metallurgical Plant (CMP) [member] Member mtl:ChelyabinskMetallurgicalPlantMember
750 Southern Urals Nickel Plant (SUNP) [member] Member mtl:SouthernUralsNickelPlantMember
751 Beloretsk Metallurgical Plant (BMP) [member] Member mtl:BeloretskMetallurgicalPlantMember
752 Korshunov Mining Plant (KMP) [member] Member mtl:KorshunovMiningPlantMember
753 Urals Stampings Plant (USP) [member] Member mtl:UralsStampingsPlantMember
754 Izhstal [member] Member mtl:IzhstalMember
755 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
756 Revenue from contracts with customers Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
757 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
758 Total selling, distribution and operating expenses, net Concept (Monetary) For Period Debit ifrs-full:OperatingExpenseExcludingCostOfSales
759 Total selling, distribution and operating expenses, net Concept (Monetary) For Period Debit mtl:OperatingExpenseExcludingCostOfSalesNet
760 Total other income and (expense), net Concept (Monetary) For Period Credit mtl:OtherIncomeExpense
761 Profit (loss) before tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
762 Income tax (expense) benefit Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
763 Profit (loss) for the year from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
764 Total comprehensive (loss) income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
765 Attributable to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
766 Dividends paid to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterests
767 1076 - Disclosure - Material Partly-Owned Subsidiaries - Summary of Statements of Financial Position (Detail) Network

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768 Disclosure of subsidiaries [table] Table

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 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
769 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
770 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
771 Southern Kuzbass Coal Company (SKCC) and subsidiaries [member] Member mtl:SkCCAndSubsidiariesMember
772 Kuzbass Power Sales Company (KPSC) [member] Member mtl:KuzbassPowerSalesCompanyMember
773 Chelyabinsk Metallurgical Plant (CMP) [member] Member mtl:ChelyabinskMetallurgicalPlantMember
774 Southern Urals Nickel Plant (SUNP) [member] Member mtl:SouthernUralsNickelPlantMember
775 Beloretsk Metallurgical Plant (BMP) [member] Member mtl:BeloretskMetallurgicalPlantMember
776 Korshunov Mining Plant (KMP) [member] Member mtl:KorshunovMiningPlantMember
777 Urals Stampings Plant (USP) [member] Member mtl:UralsStampingsPlantMember
778 Izhstal [member] Member mtl:IzhstalMember
779 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
780 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
781 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
782 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
783 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
784 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
785 Attributable to: Abstract ifrs-full:EquityAbstract
786 Equity shareholders of Mechel PAO Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
787 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
788 1077 - Disclosure - Material Partly-Owned Subsidiaries - Summary of Cash Flow Information (Detail) Network

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789 Disclosure of subsidiaries [table] Table

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790 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
791 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
792 Southern Kuzbass Coal Company (SKCC) and subsidiaries [member] Member mtl:SkCCAndSubsidiariesMember
793 Kuzbass Power Sales Company (KPSC) [member] Member mtl:KuzbassPowerSalesCompanyMember
794 Chelyabinsk Metallurgical Plant (CMP) [member] Member mtl:ChelyabinskMetallurgicalPlantMember
795 Southern Urals Nickel Plant (SUNP) [member] Member mtl:SouthernUralsNickelPlantMember
796 Beloretsk Metallurgical Plant (BMP) [member] Member mtl:BeloretskMetallurgicalPlantMember
797 Korshunov Mining Plant (KMP) [member] Member mtl:KorshunovMiningPlantMember
798 Urals Stampings Plant (USP) [member] Member mtl:UralsStampingsPlantMember
799 Izhstal [member] Member mtl:IzhstalMember
800 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
801 Operating Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
802 Investing Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
803 Financing Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
804 Increase (decrease) in cash and cash equivalents, net Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
805 1078 - Disclosure - Investments in Associates - Summary of Investments in Associates (Detail) Network

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806 Disclosure of associates [table] Table

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807 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
808 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
809 Mechel Somani Carbon (Mining segment) [member] Member mtl:MechelSomaniCarbonMember
810 TPTU (Mining segment) [member] Member mtl:TomusinskiyTransportationManagementCenterMember
811 TRMZ (Mining segment) [member] Member mtl:TomusinskiyAutoRepairShopMember
812 Disclosure of associates [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
813 Percent of shares held Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
814 Investment carrying value Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
815 1079 - Disclosure - Investments in Associates - Summary of Movements of Financial Instruments (Detail) Network

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816 Disclosure of associates [table] Table

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817 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
818 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
819 Mechel Somani Carbon (Mining segment) [member] Member mtl:MechelSomaniCarbonMember
820 TPTU (Mining segment) [member] Member mtl:TomusinskiyTransportationManagementCenterMember
821 TRMZ (Mining segment) [member] Member mtl:TomusinskiyAutoRepairShopMember
822 Disclosure of associates [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
823 Beginning of period Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
824 Share of (loss) profit Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfContinuingOperationsOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
825 Provision for impairment of investments Concept (Monetary) For Period Credit mtl:ProvisionForImpairmentOfInvestments
826 Exchange differences Concept (Monetary) For Period Credit mtl:ExchangeDifferenceOnInvestments
827 End of period Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
828 1080 - Disclosure - Related Party Disclosures - Summary of Transactions with Related Parties (Detail) Network

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829 Disclosure of transactions between related parties [table] Table

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830 Categories of Related Parties [Axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
831 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
832 Associates [member] Member ifrs-full:AssociatesMember
833 Controlling shareholders and entities under control of the Group's controlling shareholders [member] Member ifrs-full:JointControlOrSignificantInfluenceMember
834 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
835 Purchases Concept (Monetary) For Period Debit mtl:PurchasesOfGoodsAndServicesRelatedPartiesTransactions
836 Sales Concept (Monetary) For Period Credit mtl:SalesOfGoodsAndServicesRelatedPartiesTransactions
837 Other loss (income) Concept (Monetary) For Period Credit mtl:OtherIncomeLossRelatedPartyTransactions
838 Financial assets from Concept (Monetary) As Of Debit mtl:AmountsFinancialAssetsRelatedPartyTransactions
839 Financial liabilities to Concept (Monetary) As Of Credit mtl:AmountsFinancialLiabilitiesRelatedPartyTransactions
840 Total outstanding, net Concept (Monetary) As Of Credit ifrs-full:OutstandingCommitmentsMadeByEntityRelatedPartyTransactions
841 1081 - Disclosure - Related Party Disclosures - Additional Information (Detail) Network

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842 Disclosure of transactions between related parties [table] Table

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843 Categories of Related Parties [Axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
844 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
845 Associates [member] Member ifrs-full:AssociatesMember
846 Controlling shareholders and entities under control of the Group's controlling shareholders [member] Member ifrs-full:JointControlOrSignificantInfluenceMember
847 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
848 Purchases of transportation services Concept (Monetary) For Period Debit mtl:PurchasesOfTransportationServicesRelatedPartyTransactions
849 Purchases of repair services Concept (Monetary) For Period Debit mtl:PurchasesOfRepairServicesRelatedPartyTransactions
850 Amounts receivables Concept (Monetary) As Of Debit mtl:ReceivablesFullyCoveredByAllowanceFromRelatedParties
851 Cash balance at bank Concept (Monetary) As Of Debit ifrs-full:BalancesWithBanks
852 Short term employee benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
853 Share based payments Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
854 1082 - Disclosure - Fair Value Measurement - Summary of Comparison By Class of Carrying Amount and Fair Value of Group Financial Instruments (Detail) Network

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855 Disclosure of fair value measurement of liabilities [table] Table

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856 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
857 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
858 Level 3 of fair value hierarchy [member] Member ifrs-full:Level3OfFairValueHierarchyMember
859 Level 1 of fair value hierarchy [member] Member ifrs-full:Level1OfFairValueHierarchyMember
860 Level 2 of fair value hierarchy [member] Member ifrs-full:Level2OfFairValueHierarchyMember
861 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
862 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
863 Floating rate loans and borrowings [member] Member ifrs-full:FloatingInterestRateMember
864 Bond [member] Member mtl:BondFMember
865 Fixed rate loans and borrowings [member] Member ifrs-full:FixedInterestRateMember
866 Other non-current financial liabilities [member] Member mtl:OtherNonCurrentFinancialLiabilitiesMember
867 Other current financial liabilities [member] Member mtl:OtherCurrentFinancialLiabilitiesMember
868 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
869 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
870 Financial liabilities measured at amortised cost [member] Member ifrs-full:FinancialLiabilitiesAtAmortisedCostMember
871 Financial liabilities measured at fair value [member] Member ifrs-full:FinancialLiabilitiesAtFairValueMember
872 Disclosure of fair value measurement of liabilities [line items] LineItems ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesLineItems
873 Fair value Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValue
874 Carrying amount Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
875 1083 - Disclosure - Fair Value Measurement - Additional Information (Detail) Network

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876 Implied Table Table

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877 Disclosure of fair value measurement of assets [abstract] Abstract ifrs-full:DisclosureOfFairValueMeasurementOfAssetsAbstract
878 Trade receivables at fair value Concept (Monetary) As Of Debit mtl:TradeReceivablesAtFairValue
879 1084 - Disclosure - Financial Assets and Financial Liabilities - Schedule of Principal and Interest Amounts Outstanding for Loans and Bonds (Detail) Network

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880 Disclosure of detailed information about borrowings [table] Table

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881 Currency [axis] Axis srt:CurrencyAxis
882 All Currencies [Domain] Member currency:AllCurrenciesDomain
883 Russian rubles [member] Member currency:RUB
884 U.S. dollars [member] Member currency:USD
885 Euro [member] Member currency:EUR
886 Range [axis] Axis ifrs-full:RangeAxis
887 Ranges [member] Member ifrs-full:RangesMember
888 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
889 Top of range [member] Member ifrs-full:TopOfRangeMember
890 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
891 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
892 Banks and financial institutions [member] Member mtl:BanksAndFinancialInstitutionsMember
893 Bonds Issue [Member] Member mtl:BondsIssueMember
894 Corporate lenders [member] Member mtl:CorporateLendersMember
895 Types of financial liabilities [axis] Axis ifrs-full:TypesOfFinancialLiabilitiesAxis
896 Financial liabilities, type [member] Member ifrs-full:FinancialLiabilitiesTypeMember
897 Local long-term borrowings [member] Member mtl:LocalLongtermBorrowingsMember
898 Short-term borrowings [member] Member ifrs-full:ShorttermBorrowingsMember
899 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
900 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
901 Weighted average interest rate for the period Concept (Percent) For Period mtl:WeightedAverageInterestRateShorttermBorrowingsAndCurrentPortionOfLongtermDebt
902 Weighted average interest rate for the period Concept (Percent) For Period mtl:WeightedAverageInterestRateLongTermBorrowings
903 Current part of long-term loans and borrowings Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
904 Interest payable Concept (Monetary) As Of Credit ifrs-full:CurrentInterestPayable
905 Long term debt Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
906 Fines and penalties on overdue amounts Concept (Monetary) As Of Credit mtl:FinesAndPenaltiesOnOverdueAmountsCurrent
907 Short term borrowings and current portion of long Term Debt Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
908 1085 - Disclosure - Financial Assets and Financial Liabilities - Scheduled Maturities of the Debt Outstanding (Detail) Network

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909 Implied Table Table

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910 Disclosure of detailed information about borrowings [abstract] Abstract ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsAbstract
911 On demand Concept (Monetary) As Of Credit mtl:ScheduledMaturitiesOfDebtOutstandingOnDemandCurrent
912 2019 (current portion) Concept (Monetary) As Of Credit mtl:ScheduledMaturitiesOfDebtOutstandingDueInNextTwelveMonthsCurrent
913 2020 Concept (Monetary) As Of Credit mtl:ScheduledMaturitiesOfDebtOutstandingDueInYearTwo
914 2021 Concept (Monetary) As Of Credit mtl:ScheduledMaturitiesOfDebtOutstandingDueInYearThree
915 2022 Concept (Monetary) As Of Credit mtl:ScheduledMaturitiesOfDebtOutstandingDueInYearFour
916 2023 Concept (Monetary) As Of Credit mtl:ScheduledMaturitiesOfDebtOutstandingDueInYearFive
917 Thereafter Concept (Monetary) As Of Credit mtl:ScheduledMaturitiesOfDebtOutstandingDueThereafter
918 Total Concept (Monetary) As Of Credit mtl:AggregateScheduledMaturitiesOfDebtOutstanding
919 1086 - Disclosure - Financial Assets and Financial Liabilities - Additional Information (Detail) Network

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920 Disclosure of detailed information about borrowings [table] Table

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921 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
922 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
923 Credit facility [member] Member mtl:CreditFacilityMember
924 Currency [axis] Axis srt:CurrencyAxis
925 All Currencies [Domain] Member currency:AllCurrenciesDomain
926 U.S. dollars [member] Member currency:USD
927 Euro [member] Member currency:EUR
928 U.S. dollar and euro [member] Member mtl:UsDollarAndEurMember
929 Range [axis] Axis ifrs-full:RangeAxis
930 Ranges [member] Member ifrs-full:RangesMember
931 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
932 Top of range [member] Member ifrs-full:TopOfRangeMember
933 Continuing involvement in derecognised financial assets by type of instrument [axis] Axis ifrs-full:ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis
934 Types of instrument [member] Member ifrs-full:TypesOfInstrumentMember
935 Put option [member] Member mtl:PutOption1Member
936 Call option [member] Member mtl:CallOption1Member
937 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
938 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
939 Yakutugol [member] Member mtl:YakutugolMember
940 Southern Kuzbass Coal Company (SKCC) [member] Member mtl:SouthernKuzbassCoalCompanyMember
941 Chelyabinsk Metallurgical Plant (CMP) [member] Member mtl:ChelyabinskMetallurgicalPlantMember
942 Beloretsk Metallurgical Plant (BMP) [member] Member mtl:BeloretskMetallurgicalPlantMember
943 Korshunov Mining Plant (KMP) [member] Member mtl:KorshunovMiningPlantMember
944 Mechel Mining [member] Member mtl:MechelMiningMember
945 Urals Stampings Plant (USP) [member] Member mtl:UralsStampingsPlantMember
946 Izhstal [member] Member mtl:IzhstalMember
947 Port Posiet [member] Member mtl:PortPosietMember
948 Elgaugol [member] Member mtl:ElgaugolMember
949 Mecheltrans [member] Member mtl:MecheltransMember
950 Fincom Invest OOO [member] Member mtl:FincomInvestOOOMember
951 Bratsk Ferroalloy Plant (BFP) [member] Member mtl:BratskFerroalloyPlantMember
952 Port Temryuk [member] Member mtl:PortTemryukMember
953 Mecheltrans Vostok OOO [member] Member mtl:MecheltransVostokOOOMember
954 Elga-road [member] Member mtl:ElgaroadMember
955 Categories of Related Parties [Axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
956 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
957 Gazprombank [member] Member mtl:GazprombankMember
958 Russian Railways JSC [member] Member mtl:RussianRailwaysJSCMember
959 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
960 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
961 Mosprime [member] Member mtl:MosprimeMember
962 Central Bank of Russia rate [member] Member mtl:CentralBankOfRussiaRateMember
963 Others [member] Member mtl:OthersMember
964 Key rate of Central Bank of Russia [member] Member mtl:KeyRateOfCentralBankOfRussiaMember
965 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
966 Risks [member] Member ifrs-full:TypesOfRisksMember
967 Currency risk [member] Member ifrs-full:CurrencyRiskMember
968 Interest rate risk [member] Member ifrs-full:InterestRateRiskMember
969 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
970 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
971 VTB facilities [member] Member mtl:VTBFacilitiesMember
972 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
973 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
974 U.S.Dollar denominated contracts [member] Member mtl:USDollarDenominatedContractsMember
975 Euro denominated contracts [member] Member mtl:EuroDenominatedContractsMember
976 Russian ruble denominated contracts [member] Member mtl:RussianRubleDenominatedContractsMember
977 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
978 Unused portion under credit facilities Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
979 Percentage of shares pledged by subsidiaries Concept (Percent) As Of mtl:PercentageOfSharesPledgedBySubsidiaries
980 Shares pledged by subsidiaries Concept (Shares) As Of mtl:NumberOfSharesPledgedBySubsidiaries
981 Carrying value of property, plant and equipment pledged Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentPledgedAsSecurity
982 Carrying value of inventories pledged Concept (Monetary) As Of Debit ifrs-full:InventoriesPledgedAsSecurityForLiabilities
983 Accounts receivable pledged Concept (Monetary) As Of Debit mtl:AccountsReceivablePledged
984 Rights to receive future revenues or payments pledged Concept (Monetary) As Of Debit mtl:RightsToReceiveFutureRevenuesOrPaymentsPledged
985 Information about restrictions or covenants Concept (Text/String) For Period ifrs-full:InformationAboutRestrictionsOrCovenantsImposedByLeasesOnLessee
986 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:TradeReceivables
987 Loans payable in default Concept (Monetary) As Of Credit ifrs-full:LoansPayableInDefault
988 Interest payable in default Concept (Monetary) As Of Credit mtl:InterestPayableInDefault
989 Long-term debt classified as short-term debt Concept (Monetary) As Of Credit mtl:AmountReclassifiedFromLongTermToShortTerm
990 Contractual credit period for sales of goods Concept (xbrli:durationItemType) For Period mtl:ContractualCreditPeriodForSalesOfGoods
991 Percentage of foreign currency risk on sales Concept (Percent) As Of mtl:PercentageOfForeignCurrencyRiskOnSales
992 Percentage of foreign currency risk on borrowings Concept (Percent) As Of mtl:PercentageOfForeignCurrencyRiskOnBorrowings
993 Percentage of foreign currency risk on sales,partially mitigated threshold Concept (Percent) As Of mtl:PercentageOfForeignCurrencyRiskOnSalesPartiallyMitigatedThreshold
994 Percentage of interest rate risk Concept (Percent) As Of mtl:PercentageOfInterestRateRisk
995 Loan amount Concept (Monetary) As Of Debit mtl:LoansGivenToMetallurgicalPlants
996 Loan interest rate Concept (Percent) As Of mtl:InterestRateLoansGivenToMetallurgicalPlants
997 Fair value of pledged assets Concept (Monetary) As Of Debit mtl:FairValueOfLoansGivenToMetallurgicalPlants
998 Loan partially written off Concept (Monetary) For Period Credit mtl:AllowancesForLoanLossesWrittenOff
999 Other non-current financial liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentFinancialLiabilities
1000 Finance cost Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
1001 Discount rate adjustment on key rate of central bank of Russia to estimate present value of consideration to be transferred up on exercise of put option Concept (Percent) As Of mtl:DiscountRateAdjustmentOnInterestRateBasis
1002 Percentage of preferred shares acquired Concept (Percent) For Period mtl:PercentageOfPreferredSharesAcquired
1003 Number of preferred shares acquired Concept (Shares) For Period mtl:NumberOfPreferredSharesIssued
1004 Price per share Concept (Share) For Period mtl:PreferredSharesIssuedPerShare
1005 Financial liability at fair value Concept (Monetary) As Of Credit ifrs-full:RedesignatedFinancialLiabilityAtFairValueThroughProfitOrLoss
1006 Right to receive cash consideration less agreed payments Concept (Monetary) For Period Credit mtl:RightToReceiveCashConsiderationLessAgreedPayments
1007 Repayment of other current financial liabilities Concept (Monetary) For Period Credit mtl:RepaymentOfOtherCurrentFinancialLiabilities
1008 Discount rate used for calculation of present value of minimum lease payments on different groups of equipment Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesUsedInCurrentEstimateOfValueInUse
1009 Interest expense on finance leases charged to consolidated statements of profit (loss) and other comprehensive income (loss) Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnFinanceLeases
1010 Breach of restrictive lease financial covenants on overdue principal amount Concept (Monetary) As Of Credit mtl:FinanceLeaseContractsRestrictiveCovenantsOverdue
1011 Amount reclassified to short term lease liability Concept (Monetary) For Period Credit mtl:AmountReclassifiedFromLongTermFinanceLeaseLiabilityToShortTermFinanceLeaseLiability
1012 Total commitments under lease contracts Concept (Monetary) As Of Credit ifrs-full:ContractualCapitalCommitments
1013 1087 - Disclosure - Financial Assets and Financial Liabilities - Summary of Outstanding Balances of Principal Amount of Short-Term and Long-Term Debt by Denominated Currencies and Major Banks (Detail) Network

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1014 Disclosure of detailed information about borrowings [table] Table

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1015 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1016 Counterparties [member] Member ifrs-full:CounterpartiesMember
1017 Gazprombank [member] Member mtl:GazprombankMember
1018 VTB [member] Member mtl:VTBMember
1019 Sberbank [member] Member mtl:SberbankMember
1020 Bonds [member] Member mtl:BondsMember
1021 Exim Bank Of Russia [member] Member mtl:EximBankOfRussiaMember
1022 Uralsib [member] Member mtl:UralsibMember
1023 Eurasian Development Bank [member] Member mtl:EurasianDevelopmentBankMember
1024 Raiffeisen Bank [member] Member mtl:RaiffeisenBankMember
1025 Other banks [member] Member mtl:OtherBanksMember
1026 BNP [member] Member mtl:BNPMember
1027 VEB [member] Member mtl:VEBMember
1028 MCB [member] Member mtl:MCBMember
1029 Pre-export facility [member] Member mtl:PreexportFacilityMember
1030 ING [member] Member mtl:INGMember
1031 NatWest Markets [member] Member mtl:NatWestMarketsMember
1032 Commerz Bank [member] Member mtl:CommerzBankMember
1033 UniCredit Bank [member] Member mtl:UniCreditBankMember
1034 Currency [axis] Axis srt:CurrencyAxis
1035 All Currencies [Domain] Member currency:AllCurrenciesDomain
1036 Russian rubles [member] Member currency:RUB
1037 U.S. dollars [member] Member currency:USD
1038 Euro [member] Member currency:EUR
1039 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1040 Total short-term and long-term debt Concept (Monetary) As Of Credit ifrs-full:Borrowings
1041 1088 - Disclosure - Financial Assets and Financial Liabilities - Pre-Export Facility Agreement - Additional Information (Detail) Network

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1042 Disclosure of detailed information about borrowings [table] Table

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1043 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1044 Counterparties [member] Member ifrs-full:CounterpartiesMember
1045 VTB Euro-denominated [member] Member mtl:VTBEurodenominatedMember
1046 Pre-export facility [member] Member mtl:PreexportFacilityMember
1047 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1048 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1049 VTB facilities [member] Member mtl:VTBFacilitiesMember
1050 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1051 Outstanding balance of borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
1052 Amount pre-export facility agreement outstanding Concept (Monetary) As Of Credit mtl:AmountPreexportFacilityAgreementOutstanding
1053 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
1054 1089 - Disclosure - Financial Assets and Financial Liabilities - VTB Facilities - Additional Information (Detail) Network

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1055 Disclosure of detailed information about borrowings [table] Table

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1056 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1057 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1058 VTB facilities [member] Member mtl:VTBFacilitiesMember
1059 MCAG facilities [member] Member mtl:MCAGFacilitiesMember
1060 Currency [axis] Axis srt:CurrencyAxis
1061 All Currencies [Domain] Member currency:AllCurrenciesDomain
1062 Russian rubles [member] Member currency:RUB
1063 U.S. dollars [member] Member currency:USD
1064 Euro [member] Member currency:EUR
1065 Maturity [axis] Axis ifrs-full:MaturityAxis
1066 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1067 Maturity in 2022 [member] Member mtl:MaturityYearTwoThousandTwentyTwoMember
1068 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1069 Counterparties [member] Member ifrs-full:CounterpartiesMember
1070 VTB [member] Member mtl:VTBMember
1071 VTB Euro-denominated [member] Member mtl:VTBEurodenominatedMember
1072 Pre-export facility [member] Member mtl:PreexportFacilityMember
1073 Other Purposes [member] Member mtl:OtherPurposesMember
1074 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1075 Outstanding balance of borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
1076 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1077 The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
1078 Payment obligation Concept (Monetary) For Period Credit mtl:LongTermDebtRepaymentObligation
1079 The amount of facility due to prolongation agreement Concept (Monetary) For Period Credit mtl:AmountOfFacilityDueToProlongationAgreement
1080 Borrowings, interest rate basis Concept (Text/String) For Period ifrs-full:BorrowingsInterestRateBasis
1081 Overdue principal amount Concept (Monetary) As Of Credit mtl:OverduePrincipalAmount
1082 Fines and penalty on overdue amount recorded in interest-bearing loans and borrowings Concept (Monetary) As Of Credit mtl:FinesAndPenaltiesOnOverdueAmountsCurrent
1083 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
1084 Fines and penalties waived Concept (Monetary) For Period Debit mtl:FinesAndPenaltyWaived
1085 1090 - Disclosure - Financial Assets and Financial Liabilities - VTB Facilities - Additional Information (Parenthetical) (Detail) Network

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1086 Disclosure of detailed information about borrowings [table] Table

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1087 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1088 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1089 VTB facilities [member] Member mtl:VTBFacilitiesMember
1090 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1091 Cash flows arising from settlement of VTB credit facilities Concept (Monetary) For Period Debit mtl:CashFowArisingFromCreditFacilities
1092 1091 - Disclosure - Financial Assets and Financial Liabilities - Gazprombank Facilities - Additional Information (Detail) Network

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1093 Disclosure of detailed information about borrowings [table] Table

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1094 Range [axis] Axis ifrs-full:RangeAxis
1095 Ranges [member] Member ifrs-full:RangesMember
1096 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1097 Top of range [member] Member ifrs-full:TopOfRangeMember
1098 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1099 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1100 Gazprombank facilities [member] Member mtl:GazprombankFacilitiesMember
1101 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1102 Counterparties [member] Member ifrs-full:CounterpartiesMember
1103 Gazprombank [member] Member mtl:GazprombankMember
1104 Maturity [axis] Axis ifrs-full:MaturityAxis
1105 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1106 Maturity in 2022 [member] Member mtl:MaturityYearTwoThousandTwentyTwoMember
1107 Currency [axis] Axis srt:CurrencyAxis
1108 All Currencies [Domain] Member currency:AllCurrenciesDomain
1109 Russian rubles [member] Member currency:RUB
1110 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1111 Outstanding balance of borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
1112 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1113 The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
1114 Fines and penalties waived Concept (Monetary) For Period Debit mtl:FinesAndPenaltyWaived
1115 Overdue principal amount Concept (Monetary) As Of Credit mtl:OverduePrincipalAmount
1116 Overdue interest amount Concept (Monetary) As Of Credit mtl:OverdueInterestAmount
1117 Fines and penalty on overdue amount recorded in interest-bearing loans and borrowings Concept (Monetary) For Period Debit mtl:FinesAndPenaltyExpense
1118 Finance costs including fines and penalties on overdue loans and borrowings and finance leases payments Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
1119 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
1120 1092 - Disclosure - Financial Assets and Financial Liabilities - Sberbank Facilities - Additional Information (Detail) Network

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1121 Disclosure of detailed information about borrowings [table] Table

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1122 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1123 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1124 Sberbank facilities [member] Member mtl:SberbankFacilitiesMember
1125 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1126 Counterparties [member] Member ifrs-full:CounterpartiesMember
1127 Sberbank [member] Member mtl:SberbankMember
1128 Currency [axis] Axis srt:CurrencyAxis
1129 All Currencies [Domain] Member currency:AllCurrenciesDomain
1130 Russian rubles [member] Member currency:RUB
1131 U.S. dollars [member] Member currency:USD
1132 Maturity [axis] Axis ifrs-full:MaturityAxis
1133 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1134 Maturity in 2022 [member] Member mtl:MaturityYearTwoThousandTwentyTwoMember
1135 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
1136 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
1137 Key rate of Central Bank of Russia [member] Member mtl:KeyRateOfCentralBankOfRussiaMember
1138 LIBOR [member] Member mtl:LIBORMember
1139 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1140 Outstanding balance of borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
1141 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1142 The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
1143 Interest rate basis description Concept (Text/String) For Period ifrs-full:BorrowingsInterestRateBasis
1144 Overdue principal amount Concept (Monetary) As Of Credit mtl:OverduePrincipalAmount
1145 Overdue interest amount Concept (Monetary) As Of Credit mtl:OverdueInterestAmount
1146 Fines and penalty on overdue amount recorded in interest-bearing loans and borrowings Concept (Monetary) For Period Debit mtl:FinesAndPenaltyExpense
1147 Finance costs including fines and penalties on overdue loans and borrowings and finance leases payments Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
1148 1093 - Disclosure - Financial Assets and Financial Liabilities - VEB Facility - Additional Information (Detail) Network

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1149 Disclosure of detailed information about borrowings [table] Table

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1150 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1151 Counterparties [member] Member ifrs-full:CounterpartiesMember
1152 VEB [member] Member mtl:VEBMember
1153 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1154 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1155 Elgaugol [member] Member mtl:ElgaugolMember
1156 Maturity [axis] Axis ifrs-full:MaturityAxis
1157 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1158 Maturity in 2022 [member] Member mtl:MaturityYearTwoThousandTwentyTwoMember
1159 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1160 Credit facility available amount Concept (Monetary) As Of Credit mtl:CreditFacilityAvailableAmount
1161 Balance under credit facility Concept (Monetary) As Of Credit ifrs-full:Borrowings
1162 Interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1163 Overdue principal amount Concept (Monetary) As Of Credit mtl:PrincipalAmountOverdue
1164 Fines and penalty on overdue amount recorded in interest-bearing loans and borrowings Concept (Monetary) For Period Debit mtl:FinesAndPenaltyExpense
1165 1094 - Disclosure - Financial Assets and Financial Liabilities - Bonds - Additional Information (Detail) Network

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1166 Disclosure of detailed information about borrowings [table] Table

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1167 Categories of Related Parties [Axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1168 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1169 Parent [member] Member ifrs-full:ParentMember
1170 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1171 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1172 Bonds issue one [member] Member mtl:BondsIssueOneMember
1173 Bonds issue two [member] Member mtl:BondsIssueTwoMember
1174 Bonds issue three [member] Member mtl:BondsIssueThreeMember
1175 Bonds issue four [member] Member mtl:BondsIssueFourMember
1176 Bonds issue five [member] Member mtl:BondsIssueFiveMember
1177 Currency [axis] Axis srt:CurrencyAxis
1178 All Currencies [Domain] Member currency:AllCurrenciesDomain
1179 Russian rubles [member] Member currency:RUB
1180 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1181 Number of bonds issued Concept (Decimal) For Period mtl:NumberOfBondsIssued
1182 Principal amount of bonds Concept (Monetary) As Of Credit ifrs-full:BondsIssued
1183 Interest rate of bonds Concept (Percent) For Period mtl:InterestRateOfBondsIssued
1184 Maturity date of bonds Concept (Text/String) For Period mtl:BondsMaturityDate
1185 Bonds outstanding balance Concept (Monetary) As Of Credit mtl:OutstandingBalanceOnBonds
1186 Current debt Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
1187 Long term debt Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
1188 Number of bonds issued Concept (Decimal) For Period mtl:NumberOfBondsPerEachIssues
1189 Number of issues Concept (Integer) For Period mtl:NumberOfIssues
1190 1095 - Disclosure - Financial Assets and Financial Liabilities - Other Loans - Additional Information (Detail) Network

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1191 Disclosure of detailed information about borrowings [table] Table

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1192 Range [axis] Axis ifrs-full:RangeAxis
1193 Ranges [member] Member ifrs-full:RangesMember
1194 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1195 Top of range [member] Member ifrs-full:TopOfRangeMember
1196 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1197 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1198 Other loans [member] Member mtl:OtherLoansMember
1199 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
1200 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
1201 Revolving credit agreements [member] Member mtl:RevolvingCreditAgreementsMember
1202 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1203 Interest rate on borrowings Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1204 Other loans outstanding amount Concept (Monetary) As Of Credit ifrs-full:OtherBorrowings
1205 Overdue principal amount Concept (Monetary) As Of Credit mtl:PrincipalAmountOverdue
1206 Overdue interest payable Concept (Monetary) As Of Credit mtl:InterestPayableOverdue
1207 Fines and penalty on overdue amount Concept (Monetary) As Of Credit mtl:FinesAndPenaltyLiability
1208 Finance costs including fines and penalties on overdue loans and borrowings and finance leases payments Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
1209 Working capital financing Concept (Monetary) For Period Debit mtl:WorkingCapitalFinancing
1210 1096 - Disclosure - Financial Assets and Financial Liabilities - Schedule of Information About Ratios Under Most Significant Loan Agreements with the Russian State-Owned Banks (Detail) Network

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1211 Disclosure Of Covenant Ratios [table] Table

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1212 Capital requirements [axis] Axis ifrs-full:CapitalRequirementsAxis
1213 Capital requirements [member] Member ifrs-full:CapitalRequirementsMember
1214 Mechel's EBITDA to Net Interest Expense [member] Member mtl:EBITDAToNetInterestExpenseMember
1215 Mechel's EBITDA to Consolidated Financial Expense [member] Member mtl:EBITDAToConsolidatedFinancialExpenseMember
1216 Mechel's Net Debt to EBITDA [member] Member mtl:NetDebtToEBITDAMember
1217 Mechel's Total Debt to EBITDA [member] Member mtl:TotalDebtToEBITDAMember
1218 Mechel's Cash flow from operating activities to EBITDA [member] Member mtl:OperatingCashFlowToEBITDAMember
1219 Mechel's EBITDA to Revenue [member] Member mtl:EBITDAToRevenueMember
1220 Range [axis] Axis ifrs-full:RangeAxis
1221 Ranges [member] Member ifrs-full:RangesMember
1222 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1223 Top of range [member] Member ifrs-full:TopOfRangeMember
1224 Disclosure of covenant ratios [line items] LineItems mtl:DisclosureOfCovenantRatiosLineItems
1225 Requirement ratio Concept (Percent) For Period mtl:DebtInstrumentCovenantsRequirementRatio
1226 Actual ratio Concept (Percent) For Period mtl:DebtInstrumentCovenantsActualRatio
1227 1097 - Disclosure - Financial Assets and Financial Liabilities - Schedule of Information About Remaining Contractual Maturities of Non-derivative Financial Liabilities (Detail) Network

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1228 Disclosure Of Detail Information About Remaining Contractual Maturities Of Nonderivative Financial Liabilities [table] Table

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1229 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1230 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
1231 Non financial liabilities category [member] Member mtl:NonFinancialLiabilitiesCategoryMember
1232 Maturity [axis] Axis ifrs-full:MaturityAxis
1233 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1234 On demand [member] Member ifrs-full:OnDemandMember
1235 Payable in 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
1236 Payable in 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1237 Payable in 3 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1238 Payable in 4 years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1239 Payable later than 4 years [member] Member mtl:LaterThanFourYearsMember
1240 Disclosure of detail information about remaining contractual maturities of non derivative financial liabilities [line items] LineItems mtl:DisclosureOfDetailInformationAboutRemainingContractualMaturitiesOfNonderivativeFinancialLiabilitiesLineItems
1241 Loans and borrowings, including interest payable Concept (Monetary) As Of Credit mtl:LoansAndBorrowingsIncludingInterestPayable
1242 Finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:FinanceLeaseLiabilities
1243 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
1244 Other financial liabilities Concept (Monetary) As Of Credit ifrs-full:OtherFinancialLiabilities
1245 1098 - Disclosure - Financial Assets and Financial Liabilities - Schedule of Information About Maximum Exposure to Credit Risk Arising From Financial Assets (Detail) Network

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1246 Disclosure Of Detailed Information About Maximum Exposure To Credit Risk Arising From Financial Assets [table] Table

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1247 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1248 Risks [member] Member ifrs-full:TypesOfRisksMember
1249 Credit risk [member] Member ifrs-full:CreditRiskMember
1250 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1251 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1252 Promissory notes [member] Member mtl:PromissoryNotesMember
1253 Loans issued [member] Member mtl:LoansIssuedMember
1254 Bonds [member] Member mtl:BondsMember
1255 Disclosure of detailed information about maximum exposure to credit risk arising from financial assets [line items] LineItems mtl:DisclosureOfDetailedInformationAboutMaximumExposureToCreditRiskArisingFromFinancialAssetsLineItems
1256 Restricted cash (excluding cash on hand) Concept (Monetary) As Of Debit ifrs-full:RestrictedCashAndCashEquivalents
1257 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherReceivables
1258 Other financial assets Concept (Monetary) As Of Debit ifrs-full:OtherFinancialAssets
1259 Total Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1260 1099 - Disclosure - Financial Assets and Financial Liabilities - USD Denominated Assets and Liabilities Represented in RUB (Detail) Network

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1261 Disclosure Of Detailed Information About Maximum Exposure To Credit Risk Arising From Financial Assets [table] Table

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1262 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1263 Risks [member] Member ifrs-full:TypesOfRisksMember
1264 Currency risk [member] Member ifrs-full:CurrencyRiskMember
1265 Currency [axis] Axis srt:CurrencyAxis
1266 All Currencies [Domain] Member currency:AllCurrenciesDomain
1267 U.S. dollars [member] Member currency:USD
1268 Disclosure of detailed information about maximum exposure to credit risk arising from financial assets [line items] LineItems mtl:DisclosureOfDetailedInformationAboutMaximumExposureToCreditRiskArisingFromFinancialAssetsLineItems
1269 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
1270 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
1271 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1272 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
1273 Short-term loans and borrowings Concept (Monetary) As Of Credit mtl:ShorttermLoansAndBorrowings
1274 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
1275 Short-term finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentFinanceLeaseLiabilities
1276 1100 - Disclosure - Financial Assets and Financial Liabilities - EUR Denominated Assets and Liabilities Represented in RUB (Detail) Network

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1277 Disclosure Of Detailed Information About Maximum Exposure To Credit Risk Arising From Financial Assets [table] Table

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1278 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1279 Risks [member] Member ifrs-full:TypesOfRisksMember
1280 Currency risk [member] Member ifrs-full:CurrencyRiskMember
1281 Currency [axis] Axis srt:CurrencyAxis
1282 All Currencies [Domain] Member currency:AllCurrenciesDomain
1283 Euro [member] Member currency:EUR
1284 Disclosure of detailed information about maximum exposure to credit risk arising from financial assets [line items] LineItems mtl:DisclosureOfDetailedInformationAboutMaximumExposureToCreditRiskArisingFromFinancialAssetsLineItems
1285 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
1286 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
1287 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1288 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
1289 Long-term finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinanceLeaseLiabilities
1290 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
1291 Short-term loans and borrowings Concept (Monetary) As Of Credit mtl:ShorttermLoansAndBorrowings
1292 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
1293 Short-term finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentFinanceLeaseLiabilities
1294 1101 - Disclosure - Financial Assets and Financial Liabilities - Schedule of Information About Sensitivity to Devaluation (Detail) Network

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1295 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

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1296 Currency [axis] Axis srt:CurrencyAxis
1297 All Currencies [Domain] Member currency:AllCurrenciesDomain
1298 U.S. dollars [member] Member currency:USD
1299 Euro [member] Member currency:EUR
1300 Disclosure of sensitivity analysis for actuarial assumptions [line items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1301 Increase in exchange rate Concept (Percent) As Of mtl:PercentageOfIncreaseInExchangeRate
1302 Decrease in exchange rate Concept (Percent) As Of mtl:PercentageOfDecreaseInExchangeRate
1303 Effect on profit before tax, decrease Concept (Monetary) For Period Debit mtl:DecreaseInProfitBeforeTaxBasedOnExchangeRates
1304 Effect on profit before tax, increase Concept (Monetary) For Period Credit mtl:IncreaseInProfitBeforeTaxBasedOnExchangeRates
1305 1102 - Disclosure - Financial Assets and Financial Liabilities - Schedule of Information About Sensitivity to Change of Floating Rates (Detail) Network

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1306 Disclosure Of Detailed Information About Sensitivity To Change Of Floating Rates [table] Table

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1307 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
1308 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
1309 Mosprime and Central Bank of Russia [member] Member mtl:MosprimeAndCentralBankOfRussiaMember
1310 LIBOR [member] Member mtl:LIBORMember
1311 EURIBOR [member] Member mtl:EURIBORMember
1312 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1313 Risks [member] Member ifrs-full:TypesOfRisksMember
1314 Interest rate risk [member] Member ifrs-full:InterestRateRiskMember
1315 Disclosure of detailed information about sensitivity to change of floating rates [line items] LineItems mtl:DisclosureOfDetailedInformationAboutSensitivityToChangeOfFloatingRatesLineItems
1316 Decrease in profit before tax based on floating rates Concept (Monetary) For Period Debit mtl:DecreaseInProfitBeforeTaxBasedOnFloatingRates
1317 Increase in profit before tax based on floating rates Concept (Monetary) For Period Credit mtl:IncreaseInProfitBeforeTaxBasedOnFloatingRates
1318 Percentage of increase in floating rate Concept (Percent) As Of mtl:PercentageOfIncreaseInFloatingRate
1319 Percentage of decrease in floating rate Concept (Percent) As Of mtl:PercentageOfDecreaseInFloatingRate
1320 1103 - Disclosure - Financial Assets and Financial Liabilities - Summary of Future Minimum Lease Payments under Finance Leases Together with Present Value of Net Minimum Lease Payments (Detail) Network

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1321 Disclosure of finance lease and operating lease by lessee [table] Table

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1322 Maturity [axis] Axis ifrs-full:MaturityAxis
1323 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1324 Payable in 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
1325 Payable in 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1326 Payable in 3 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1327 Payable in 4 years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1328 Payable in 5 years and thereafter [member] Member mtl:NotLaterThanFiveYearAndLaterThanFiveYearsMember
1329 Disclosure of finance lease and operating lease by lessee [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
1330 Total minimum lease payment Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayable
1331 Less amounts representing finance charges Concept (Monetary) As Of Credit ifrs-full:FutureFinanceChargeOnFinanceLease
1332 Present value of finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
1333 Total minimum lease payment Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
1334 Current portion of finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentFinanceLeaseLiabilities
1335 Non-current portion of finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinanceLeaseLiabilities
1336 1104 - Disclosure - Inventories - Summary of Inventories (Detail) Network

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1337 Implied Table Table

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 implied:Table
1338 Inventories [abstract] Abstract mtl:InventoriesAbstract
1339 Raw materials Concept (Monetary) As Of Debit ifrs-full:RawMaterials
1340 Work in progress Concept (Monetary) As Of Debit ifrs-full:WorkInProgress
1341 Finished goods and goods for resale Concept (Monetary) As Of Debit ifrs-full:FinishedGoods
1342 Total inventories at the lower of cost and net realisable value Concept (Monetary) As Of Debit ifrs-full:Inventories
1343 1105 - Disclosure - Inventories - Additional Information (Detail) Network

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1344 Implied Table Table

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1345 Inventories [abstract] Abstract mtl:InventoriesAbstract
1346 Amount of write-down of inventories to net realisable value Concept (Monetary) For Period ifrs-full:InventoryWritedown2011
1347 Inventories recognized as expense Concept (Monetary) For Period Debit ifrs-full:CostOfInventoriesRecognisedAsExpenseDuringPeriod
1348 1106 - Disclosure - Trade and Other Receivables - Summary of Trade and Other Receivables (Detail) Network

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1349 Trade and Other Receivables [table] Table

*

*

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1351 Customers [member] Member ifrs-full:MajorCustomersMember
1352 Domestic customers [member] Member mtl:DomesticCustomersMember
1353 Foreign customers [member] Member mtl:ForeignCustomersMember
1354 Trade and other receivables [line items] LineItems mtl:TradeAndOtherReceivablesLineItems
1355 Trade receivables Concept (Monetary) As Of Debit ifrs-full:TradeReceivables
1356 Less allowance for expected credit losses on trade receivables Concept (Monetary) For Period Debit mtl:AllowanceForExpectedCreditLossesOnTradeReceivables
1357 Total trade receivables, net Concept (Monetary) As Of Debit mtl:CurrentTradeReceivablesNet
1358 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherReceivables
1359 Less allowance for expected credit losses on other receivables Concept (Monetary) For Period Debit mtl:AllowanceForExpectedCreditLossesOnOtherReceivables
1360 Total other receivables, net Concept (Monetary) As Of Debit mtl:OtherReceivablesNet
1361 Total accounts receivable, net Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
1362 1107 - Disclosure - Trade and Other Receivables - Summary of Credit Risk Exposure on Trade Receivables (Detail) Network

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1363 Trade and Other Receivables [table] Table

*

*

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1364 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
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1366 Current [member] Member ifrs-full:CurrentMember
1367 30 days [member] Member ifrs-full:NotLaterThanOneMonthMember
1368 31-60 days [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMember
1369 61-90 days [member] Member ifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember
1370 91-180 days [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMember
1371 181-365 days [member] Member mtl:LaterThanSixMonthAndNotLaterThanOneYearMember
1372 1 year [member] Member ifrs-full:LaterThanOneYearMember
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1374 Trade receivable Concept (Monetary) As Of Debit ifrs-full:TradeReceivables
1375 Expected credit losses Concept (Monetary) As Of Credit mtl:ExpectedCreditLosses
1376 1108 - Disclosure - Trade and Other Receivables - Summary of Movements in Allowance for Expected Credit Losses on Trade and Other Receivables (Detail) Network

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1377 Implied Table Table

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1378 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1379 Beginning balance Concept (Monetary) As Of Debit mtl:AllowanceForCreditLosses
1380 Charge for the year Concept (Monetary) For Period Credit mtl:AllowanceForCreditLossIncomeStatementCharge
1381 Utilised amounts Concept (Monetary) For Period Debit mtl:AllowanceForCreditLossUnusedAmountsReversed
1382 Disposal of subsidiaries Concept (Monetary) For Period Debit mtl:AllowanceForCreditLossDisposalOfSubsidiaries
1383 Reclassified to non-current financial assets (Note 9) Concept (Monetary) For Period Debit mtl:AllowanceForCreditLossTransferToNoncurrentFinancialAssets
1384 Exchange rate difference Concept (Monetary) For Period Credit mtl:ExchangeDifferencesAllowanceForCreditLoss
1385 Ending balance Concept (Monetary) As Of Debit mtl:AllowanceForCreditLosses
1386 1109 - Disclosure - Other Current and Non-Current Assets - Schedule of Other Current and Non Current Assets (Detail) Network

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1387 Implied Table Table

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*

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1388 Other Current and non-current Assets [abstract] Abstract mtl:OtherCurrentAndNoncurrentAssetsAbstract
1389 Other current assets Abstract ifrs-full:MiscellaneousCurrentAssetsAbstract
1390 Prepayments and advances Concept (Monetary) As Of Debit ifrs-full:PrepaymentsAndAccruedIncome
1391 Input VAT and other taxes recoverable Concept (Monetary) As Of Debit ifrs-full:ReceivablesFromTaxesOtherThanIncomeTax
1392 Other current assets Concept (Monetary) As Of Debit mtl:OtherMiscellaneousCurrentAssets
1393 Total prepayments and other current assets Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
1394 Other non-current assets Abstract ifrs-full:MiscellaneousNoncurrentAssetsAbstract
1395 Deferred assets from sale and lease back Concept (Monetary) As Of Debit mtl:DeferredTaxAssetsFromSaleAndLeaseBack
1396 Other non-current assets Concept (Monetary) As Of Debit mtl:OtherMiscellaneousNoncurrentAssets
1397 Total other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
1398 1110 - Disclosure - Other Current and Non-Current Assets - Additional Information (Detail) Network

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*

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1399 Implied Table Table

*

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1400 Other Current and non-current Assets [abstract] Abstract mtl:OtherCurrentAndNoncurrentAssetsAbstract
1401 Provision for advances issued included in administrative and other operating expenses Concept (Monetary) For Period Debit mtl:ProvisionForDoubtfulTradeReceivableAndAdvances
1402 Reversal of provision for advances issued Concept (Monetary) For Period Credit mtl:ReversalOfProvisionForAdvancesIssued
1403 1111 - Disclosure - Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) Network

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1404 Disclosure Of Cash And Cash Equivalents [table] Table

*

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1406 All Currencies [Domain] Member currency:AllCurrenciesDomain
1407 Russian rubles [member] Member currency:RUB
1408 U.S. dollars [member] Member currency:USD
1409 Euro [member] Member currency:EUR
1410 Other currencies [member] Member mtl:OtherCurrenciesMember
1411 Disclosure of cash and cash equivalents [line items] LineItems mtl:DisclosureOfCashAndCashEquivalentsLineItems
1412 Cash on hand Concept (Monetary) As Of Debit ifrs-full:CashOnHand
1413 Cash at banks Concept (Monetary) As Of Debit ifrs-full:BalancesWithBanks
1414 Total cash and cash equivalents Concept (Monetary) As Of Debit mtl:CashAndCashEquivalentsBeforeExpectedCreditLosses
1415 Less allowance for expected credit loss Concept (Monetary) For Period Credit mtl:AllowanceForExpectedCreditLossesOnCashAndCashEquivalents
1416 Total cash and cash equivalents, net Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1417 1112 - Disclosure - Cash and Cash Equivalents - Additional Information (Detail) Network

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*

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1418 Implied Table Table

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1419 Cash and cash equivalents [abstract] Abstract ifrs-full:CashAndCashEquivalentsAbstract
1420 Bank overdrafts deducted from cash and cash equivalents Concept (Monetary) As Of Credit ifrs-full:BankOverdraftsClassifiedAsCashEquivalents
1421 Short-term deposits Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsClassifiedAsCashEquivalents
1422 Undrawn committed borrowing facilities Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
1423 Dividends paid Concept (Monetary) For Period Debit ifrs-full:DividendsPaid
1424 Acquisition of non-controlling interests in subsidiaries Concept (Monetary) For Period Credit ifrs-full:PaymentsFromChangesInOwnershipInterestsInSubsidiaries
1425 Fines and penalties on overdue finance leases Concept (Monetary) For Period Credit mtl:FinesAndPenaltiesOnOverdueFinanceLeases
1426 Interest accrued Concept (Monetary) For Period Credit mtl:InterestAccrued
1427 Effect of restructuring of loans and finance leases Concept (Monetary) For Period Credit mtl:EffectOfRestructuringOfLoansAndFinanceLeases
1428 1113 - Disclosure - Cash and Cash Equivalents - Reconciliation Between the Changes in Liabilities Arising from Financing Activities (Detail) Network

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1429 Disclosure of financial liabilities [table] Table

*

*

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1431 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
1432 Loans and Borrowings [member] Member mtl:LoansAndBorrowingsMember
1433 Finance lease liabilities [member] Member mtl:FinanceLeaseLiabilitiesMember
1434 Deferred payments for acquisition of assets [member] Member mtl:DeferredPaymentsForAcquisitionOfAssetsMember
1435 Put option of Gazprombank [member] Member mtl:PutOptionOfGazprombankMember
1436 Other current financial liabilities [member] Member mtl:OtherCurrentFinancialLiabilitiesMember
1437 Deferred consideration paid for the acquisition of subsidiaries in prior periods [member] Member mtl:DeferredConsiderationPaidForTheAcquisitionOfSubsidiariesInPriorPeriodsMember
1438 Disclosure of financial liabilities [line items] LineItems ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
1439 Beginning of period Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
1440 Cash flows Concept (Monetary) For Period Debit mtl:ProceedsPaymentOfFinancialLiabilitiesFinancingActivities
1441 Foreign exchange movement Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
1442 Changes in fair value Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInFairValueMeasurementLiabilities
1443 Other changes, including interest Concept (Monetary) For Period Debit mtl:OtherAdjustmentsForNonInvestmentAndNoncashItems
1444 End of period Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
1445 1114 - Disclosure - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) Network

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*

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1446 Disclosure of Detailed Information about Property, Plant and Equipment [Table] Table

*

*

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1447 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1448 Present Value of Finance Lease Liabilities [Member] Member ifrs-full:CarryingAmountMember
1449 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1450 Depreciation, amortisation and impairment [member] Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1451 Classes of Property, Plant and Equipment [Axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1452 Property, Plant and Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
1453 Land [member] Member ifrs-full:LandMember
1454 Buildings and constructions [member] Member ifrs-full:BuildingsMember
1455 Operating machinery and equipment [member] Member mtl:OperatingMachineryAndEquipmentMember
1456 Transportation vehicles [member] Member ifrs-full:MotorVehiclesMember
1457 Other equipment [member] Member mtl:OtherEquipmentMember
1458 Construction in-progress [member] Member ifrs-full:ConstructionInProgressMember
1459 Mining plant and equipment [member] Member ifrs-full:MiningPropertyMember
1460 Railway Ulak-Elga [member] Member mtl:RailwayUlakElgaMember
1461 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1462 Property, plant and equipment, beginning balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1463 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
1464 Depreciation charge Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
1465 Change in rehabilitation provision Concept (Monetary) For Period Debit mtl:ChangeInRehabilitationProvisionForPropertyPlantAndEquipment
1466 Transfers Concept (Monetary) For Period Debit mtl:TransferBetweenCategoriesOfPropertyPlantAndEquipment
1467 Disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
1468 Impairment Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
1469 Exchange differences Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
1470 Property, plant and equipment, ending balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1471 1115 - Disclosure - Property, Plant and Equipment - Additional Information (Detail) Network

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1472 Disclosure of Detailed Information about Property, Plant and Equipment [Table] Table

*

*

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1473 Classes of Assets [Axis] Axis ifrs-full:ClassesOfAssetsAxis
1474 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1475 Non-current assets [member] Member mtl:NonCurrentAssetsMember
1476 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1477 Impairment loss recognized Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1478 Construction in progress Concept (Monetary) As Of Debit mtl:AdvancesForCunstruction
1479 Additions of operating machinery and equipment and transportation vehicles under finance lease Concept (Monetary) For Period Debit mtl:AdditionsOfLeasedMachineryAndEquipmentAndTransportation
1480 Borrowings costs capitalised Concept (Monetary) For Period ifrs-full:InterestCostsCapitalised
1481 Capitalisation rate of borrowing costs eligible for capitalisation Concept (Percent) For Period ifrs-full:CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
1482 Contractual commitments to acquire property plant and equipment Concept (Monetary) As Of Credit ifrs-full:ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment
1483 1116 - Disclosure - Property, Plant and Equipment - Schedule of Property, Plant and Equipment Assets Pledged to Secure Bank Loans and Borrowings Granted to Group (Detail) Network

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1484 Implied Table Table

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*

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1485 Disclosure of detailed information about property, plant and equipment [abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
1486 Net book value Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentPledgedAsSecurity
1487 1117 - Disclosure - Property, Plant and Equipment - Schedule of Ownership of Assets or Option to Purchase Leased Assets at Bargain Price (Detail) Network

*

*

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1488 Disclosure of recognised finance lease as assets by lessee [table] Table

*

*

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1489 Classes of Property, Plant and Equipment [Axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1490 Property, Plant and Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
1491 Operating machinery and equipment [member] Member mtl:OperatingMachineryAndEquipmentMember
1492 Transportation vehicles [member] Member ifrs-full:MotorVehiclesMember
1493 Disclosure of recognised finance lease as assets by lessee [line items] LineItems ifrs-full:DisclosureOfRecognisedFinanceLeaseAsAssetsByLesseeLineItems
1494 Net book value Concept (Monetary) As Of Debit ifrs-full:RecognisedFinanceLeaseAsAssets
1495 1118 - Disclosure - Intangible Assets - Schedule of Intangible Assets (Detail) Network

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*

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1496 Disclosure of detailed information about intangible assets [table] Table

*

*

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1497 Classes of Intangible Assets and Goodwill [Axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
1498 Intangible assets and goodwill [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
1499 Goodwill [member] Member ifrs-full:GoodwillMember
1500 Mineral licenses [member] Member mtl:MineralLicensesMember
1501 Other intangible assets [member] Member ifrs-full:OtherIntangibleAssetsMember
1502 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1503 Present Value of Finance Lease Liabilities [Member] Member ifrs-full:CarryingAmountMember
1504 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1505 Depreciation, amortisation and impairment [member] Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1506 Disclosure of detailed information about intangible assets [line items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
1507 Beginning balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1508 Beginning balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1509 Additions Concept (Monetary) For Period Debit mtl:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsAndGoodwill
1510 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
1511 Impairment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
1512 Impairment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
1513 Amortisation Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
1514 Disposal Concept (Monetary) For Period Credit ifrs-full:DisposalsIntangibleAssetsAndGoodwill
1515 Disposal Concept (Monetary) For Period Credit ifrs-full:DisposalsIntangibleAssetsOtherThanGoodwill
1516 Exchange differences Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill
1517 Exchange differences Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
1518 Ending balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1519 Ending balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1520 1119 - Disclosure - Intangible Assets - Additional Information (Detail) Network

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1521 Disclosure of detailed information about intangible assets [table] Table

*

*

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1522 Classes of Intangible Assets and Goodwill [Axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
1523 Intangible assets and goodwill [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
1524 Other intangible assets [member] Member ifrs-full:OtherIntangibleAssetsMember
1525 Disclosure of detailed information about intangible assets [line items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
1526 Useful life Concept (Text/String) For Period ifrs-full:UsefulLivesOrAmortisationRatesIntangibleAssetsOtherThanGoodwill
1527 Contractual commitments to acquire intangible assets Concept (Monetary) As Of Credit ifrs-full:ContractualCommitmentsForAcquisitionOfIntangibleAssets
1528 1120 - Disclosure - Impairment of Goodwill and Other Non-Current Assets - Summary of Goodwill Acquired Through Business Combinations Allocated to CGUs for Impairment Testing (Detail) Network

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1529 Disclosure of impairment loss and reversal of impairment loss [table] Table

*

*

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1530 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1531 Present Value of Finance Lease Liabilities [Member] Member ifrs-full:CarryingAmountMember
1532 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1533 Cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
1534 Entity's total for cash-generating units [member] Member ifrs-full:EntitysTotalForCashgeneratingUnitsMember
1535 Yakutugol [member] Member mtl:YakutugolMember
1536 Southern Kuzbass Power Plant (SKPP) [member] Member mtl:SouthernKuzbassPowerPlantMember
1537 Kuzbass Power Sales Company (KPSC) [member] Member mtl:KuzbassPowerSalesCompanyMember
1538 Port Posiet [member] Member mtl:PortPosietMember
1539 Chelyabinsk Metallurgical Plant (CMP) [member] Member mtl:ChelyabinskMetallurgicalPlantMember
1540 Southern Kuzbass Coal Company (SKCC) [member] Member mtl:SouthernKuzbassCoalCompanyMember
1541 Port Temryuk [member] Member mtl:PortTemryukMember
1542 Segments [axis] Axis ifrs-full:SegmentsAxis
1543 Segments [member] Member ifrs-full:SegmentsMember
1544 Mining segment [member] Member mtl:MiningSegmentMember
1545 Power segment [member] Member mtl:PowerSegmentMember
1546 Steel segment [member] Member mtl:SteelSegmentMember
1547 Disclosure of impairment loss and reversal of impairment loss [line items] LineItems ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems
1548 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1549 1121 - Disclosure - Impairment of Goodwill and Other Non-Current Assets - Additional Information (Detail) Network

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1550 Disclosure of impairment loss and reversal of impairment loss [table] Table

*

*

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1551 Range [axis] Axis ifrs-full:RangeAxis
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1554 Top of range [member] Member ifrs-full:TopOfRangeMember
1555 Categories of Related Parties [Axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1556 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1557 Izhstal [member] Member mtl:IzhstalMember
1558 Elga coal complex [member] Member mtl:ElgaCoalComplexMember
1559 Individual assets or cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsAxis
1560 Entity's total for individual assets or cash-generating units [member] Member ifrs-full:EntitysTotalForIndividualAssetsOrCashgeneratingUnitsMember
1561 Cash generating units [member] Member mtl:CashGeneratingUnitsMember
1562 Cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
1563 Entity's total for cash-generating units [member] Member ifrs-full:EntitysTotalForCashgeneratingUnitsMember
1564 Korshunov mining plant KMP [member] Member mtl:KorshunovMiningPlantKMPMember
1565 Bratsk Ferroalloy Plant (BFP) [member] Member mtl:BratskFerroalloyPlantMember
1566 Izhstal [member] Member mtl:IzhstalMember
1567 Southern Kuzbass Power Plant (SKPP) [member] Member mtl:SouthernKuzbassPowerPlantMember
1568 Southern Kuzbass Coal Company (SKCC) [member] Member mtl:SouthernKuzbassCoalCompanyMember
1569 Yakutugol [member] Member mtl:YakutugolMember
1570 Classes of Intangible Assets and Goodwill [Axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
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1572 Mineral licenses [member] Member mtl:MineralLicensesMember
1573 Segments [axis] Axis ifrs-full:SegmentsAxis
1574 Segments [member] Member ifrs-full:SegmentsMember
1575 Steel segment [member] Member mtl:SteelSegmentMember
1576 Mining segment [member] Member mtl:MiningSegmentMember
1577 Power segment [member] Member mtl:PowerSegmentMember
1578 Disclosure of impairment loss and reversal of impairment loss [line items] LineItems ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems
1579 Forecasted period for non-mining subsidiaries to reach stabilized cash flows Concept (Text/String) For Period ifrs-full:ExplanationOfPeriodOverWhichManagementHasProjectedCashFlows
1580 Terminal growth rate Concept (Percent) As Of ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections
1581 Number of cash generating units Concept (Integer) For Period mtl:NumberOfCashGeneratingUnit
1582 Goodwill written down Concept (Monetary) For Period Debit ifrs-full:ChangesInGoodwill
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1584 Additional impairment of property, plant and equipment Concept (Monetary) For Period Debit mtl:AdditionalImpairmentRecognizedDueToKeyAssumptionsImplementation
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1586 Carrying value of property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1587 Impairment of non-current assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
1588 Impairment of mineral licenses Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
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1594 Percentage decrease in sales prices Concept (Percent) For Period mtl:PercentageDecreaseInSalesPrices
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1597 Disclosure of impairment loss and reversal of impairment loss [table] Table

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1616 1123 - Disclosure - Impairment of Goodwill and Other Non-Current Assets - Summary of Impairment Analysis and Impairment Loss (Detail) Network

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*

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1617 Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [table] Table

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1623 Bratsk Ferroalloy Plant (BFP) [member] Member mtl:BratskFerroalloyPlantMember
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1633 1124 - Disclosure - Impairment of Goodwill and Other Non-Current Assets - Summary of Carrying Value of Individual Items of Assets (Detail) Network

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1650 1125 - Disclosure - Trade and Other Payables - Schedule of Trade and Other Payables (Detail) Network

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1651 Implied Table Table

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1656 1126 - Disclosure - Trade and Other Payables - Summary of Other Payables (Detail) Network

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1657 Implied Table Table

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1666 1127 - Disclosure - Trade and Other Payables - Additional Information (Detail) Network

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1673 1128 - Disclosure - Income Tax - Schedule of Major Components of Income Tax Expense (Detail) Network

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1674 Implied Table Table

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1678 Relating to origination and reversal of temporary differences Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
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1680 1129 - Disclosure - Income Tax - Additional Information (Detail) Network

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1713 1130 - Disclosure - Income Tax - Schedule of Reconciliation Related to Income Tax Expense (Detail) Network

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1714 Implied Table Table

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1727 Implied Table Table

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1731 1132 - Disclosure - Income Tax - Schedule of Deferred Tax Assets and Liabilities (Detail) Network

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1764 1133 - Disclosure - Income Tax - Schedule of Deferred Tax Assets and Liabilities Recognized (Detail) Network

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1765 Implied Table Table

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1770 1134 - Disclosure - Taxes and Similar Charges Payable Other Than Income Tax - Schedule of Taxes and Similar Charges Payable Other Than Income Tax (Detail) Network

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1781 1135 - Disclosure - Pensions and Other Post-Employment Benefit Plans - Additional Information (Detail) Network

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1782 Disclosure of defined benefit plans [table] Table

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1793 1136 - Disclosure - Pensions and Other Post-Employment Benefit Plans - Schedule of Changes in Present Value of Defined Benefit Obligations and Other Long-term Benefits and Fair Value of Plan Assets (Detail) Network

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1794 Disclosure of defined benefit plans [table] Table

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1814 1137 - Disclosure - Pensions and Other Post-Employment Benefit Plans - Schedule of Pension Obligations Recognized in Consolidated Statement of Financial Position (Detail) Network

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1815 Implied Table Table

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1820 1138 - Disclosure - Pensions and Other Post-Employment Benefit Plans - Schedule of Plan Asset Allocation of Investment Portfolio (Detail) Network

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1821 Implied Table Table

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1827 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherAssetsAmountContributedToFairValueOfPlanAssets
1828 Total plan assets Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
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1830 Disclosure of fair value of plan assets [table] Table

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1839 Inflation rates Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflation
1840 Rate of compensation increase Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
1841 1140 - Disclosure - Pensions and Other Post-Employment Benefit Plans - Schedule of Sensitivity Analysis of Defined Benefit Obligations (Detail) Network

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1842 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

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1851 Actuarial assumption of expected rates of inflation [member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflationMember
1852 Actuarial assumption of expected rates of salary increases [member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
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1856 Percentage of decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
1857 1141 - Disclosure - Pensions and Other Post-Employment Benefit Plans - Schedule of Sensitivity Analysis of Defined Benefit Obligations (Parenthetical) (Detail) Network

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1858 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

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1862 Actuarial assumption of expected rates of inflation [member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflationMember
1863 Actuarial assumption of expected rates of salary increases [member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
1864 Other material actuarial assumptions [member] Member ifrs-full:OtherMaterialActuarialAssumptionsMember
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1868 Germany [member] Member country:DE
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1870 Disclosure of sensitivity analysis for actuarial assumptions [line items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1871 Percentage of change in actuarial assumption Concept (Percent) As Of mtl:PercentageOfChangeInActuarialAssumption
1872 1142 - Disclosure - Provisions - Summary of Provisions (Detail) Network

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1873 Disclosure of other provisions [table] Table

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1876 Rehabilitation provision [member] Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
1877 Provisions for legal claims [member] Member ifrs-full:LegalProceedingsProvisionMember
1878 Tax provisions [member] Member ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember
1879 Other provisions [member] Member ifrs-full:MiscellaneousOtherProvisionsMember
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1881 Beginning balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1882 Arising during the year Concept (Monetary) For Period Credit ifrs-full:AdditionalProvisionsOtherProvisions
1883 Utilized Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
1884 Revision in estimated cash flow and discount rate adjustment Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTimeValueOfMoneyAdjustmentOtherProvisions
1885 Unused amounts reversed Concept (Monetary) For Period Debit ifrs-full:UnusedProvisionReversedOtherProvisions
1886 Unwinding of discount Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangeInDiscountRateOtherProvisions
1887 Exchange differences Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
1888 Ending balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1889 Current Concept (Monetary) As Of Credit ifrs-full:CurrentProvisions
1890 Non-current Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisions
1891 1143 - Disclosure - Provisions - Additional Information (Detail) Network

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1892 Disclosure of other provisions [table] Table

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1899 Minmetals Engineering Co. Ltd [member] Member mtl:MinmetalsEngineeringCoLtdMember
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1902 Commencement of major litigation [member] Member ifrs-full:CommencementOfMajorLitigationMember
1903 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
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1907 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
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1910 Other tax claims Concept (Monetary) As Of Credit mtl:ProvisionForTaxesOtherThanIncomeTax
1911 Possible tax liabilities on taxes other than income tax Concept (Monetary) As Of Credit mtl:PossibleTaxLiabilitiesOnTaxesOtherThanIncomeTax
1912 1144 - Disclosure - Issued Capital and Reserves - Additional Information (Detail) Network

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1913 Disclosure of classes of share capital [table] Table

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1917 Preferred shares [member] Member ifrs-full:PreferenceSharesMember
1918 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
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1920 Equity attributable to shareholders of Mechel PAO [member] Member ifrs-full:EquityAttributableToOwnersOfParentMember
1921 Non-controlling interest [member] Member ifrs-full:NoncontrollingInterestsMember
1922 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1923 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
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1926 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1927 Number of shares Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
1928 Nominal value of shares Concept (Share) As Of ifrs-full:ParValuePerShare
1929 Number of additional common shares authorized to issue Concept (Shares) As Of mtl:NumberOfAdditionalSharesAuthorizedToIssue
1930 Percentage of preferred shares in share capital Concept (Percent) As Of mtl:PercentageOfPreferredSharesInShareCapital
1931 Percentage of dividend yield paid per one preferred share Concept (Percent) As Of mtl:PercentageOfDividendYieldPaidOnPreferredShares
1932 Number of shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1933 Number of shares outstanding Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
1934 Number of treasury shares Concept (Shares) As Of mtl:NumberOfTreasuryShares
1935 Percentage of withholding tax dividends for residents Concept (Percent) For Period mtl:PercentageOfWithholdingTaxDividendsForResidents
1936 Percentage of withholding tax dividends for non residents Concept (Percent) For Period mtl:PercentageOfWithholdingTaxDividendsForNonResidents
1937 Percentage of withholding tax rate for intercompany dividends Concept (Percent) For Period ifrs-full:TaxRateEffectOfForeignTaxRates
1938 Percentage of controlling interest in the share capital of the company (Russian or foreign) of the dividend payer Concept (Percent) For Period mtl:ProportionOfOwnershipInterestInSubsidiaryExemptedFromPaymentOfWithholdingTax
1939 Description of withholding tax rate on intercompany dividend Concept (Text/String) For Period ifrs-full:DisclosureOfNatureOfPotentialIncomeTaxConsequencesThatWouldResultFromPaymentOfDividendExplanatory
1940 Dividends declared to non-controlling interest Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
1941 Dividends declared to shareholders of Mechel PAO Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParent
1942 Dividends declared to shareholders of Mechel PAO, per share Concept (Share) For Period mtl:DividendsDeclaredPerShare
1943 Carrying value of acquisition of non-controlling interests Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl
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1945 1145 - Disclosure - Other Income/Expenses - Summary of General, Administrative and Other Operating Expenses (Detail) Network

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1946 Implied Table Table

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1947 General, administrative and other operating expenses [abstract] Abstract mtl:GeneralAdministrativeAndOtherOperatingExpensesAbstract
1948 Wages, salaries and social security costs Concept (Monetary) For Period Debit ifrs-full:ShorttermEmployeeBenefitsExpense
1949 Office expenses Concept (Monetary) For Period Debit mtl:OfficeExpenses
1950 Audit and consulting services Concept (Monetary) For Period Debit mtl:AuditAndConsultingFees
1951 Provision for legal claims, net Concept (Monetary) For Period Debit mtl:ProvisionForLegalClaimsNet
1952 Depreciation Concept (Monetary) For Period Debit ifrs-full:DepreciationExpense
1953 Fines and penalties related to business contracts Concept (Monetary) For Period Debit mtl:FinesAndPenaltiesRelatedToBusinessContracts
1954 Social expenses Concept (Monetary) For Period Debit mtl:SocialExpenses
1955 Consumables Concept (Monetary) For Period Debit ifrs-full:RawMaterialsAndConsumablesUsed
1956 Banking charges and services Concept (Monetary) For Period Debit ifrs-full:BankAndSimilarCharges
1957 Rent Concept (Monetary) For Period Debit ifrs-full:RentalExpense
1958 Business trips Concept (Monetary) For Period Debit ifrs-full:TravelExpense
1959 Write off of trade and other receivables Concept (Monetary) For Period Debit mtl:WriteOffOfAccountsReceivable
1960 Net result from disposal of non-current assets Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfPropertyPlantAndEquipment
1961 Other Concept (Monetary) For Period Debit mtl:OtherGeneralAdministrativeAndOtherOperatingExpenses
1962 Total Concept (Monetary) For Period Debit ifrs-full:GeneralAndAdministrativeExpense
1963 1146 - Disclosure - Other Income/Expenses - Summary of Employee Benefits Expenses (Detail) Network

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1967 Cost of sales [member] Member mtl:CostOfSales1Member
1968 Selling and distribution expenses [member] Member mtl:SellingAndDistributionExpensesMember
1969 Administrative and other operating expenses [member] Member mtl:AdministrativeAndOtherOperatingExpensesMember
1970 Employee benefits expense [line items] LineItems mtl:EmployeeBenefitsExpenseLineItems
1971 Wages and salaries Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
1972 Social security costs Concept (Monetary) For Period Debit ifrs-full:SocialSecurityContributions
1973 Post-employment benefits Concept (Monetary) For Period Debit mtl:PostEmploymentBenefitExpense
1974 Total Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
1975 1147 - Disclosure - Other Income/Expenses - Summary of Other Operating Income (Detail) Network

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1976 Implied Table Table

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1977 Other Operating Income [abstract] Abstract mtl:OtherOperatingIncomeAbstract
1978 Gain from sales of scrap materials Concept (Monetary) For Period Credit mtl:GainOnSaleOfScrapMaterials
1979 Subsidies received from the governmental authorities as a compensation for operating activities (energy tariffs) Concept (Monetary) For Period Credit mtl:SubsidiesReceivedFromTheGovernmentalAuthoritiesAsCompensationForEnergyTariffs
1980 Income from fines and penalties related to business contracts Concept (Monetary) For Period Credit mtl:GainOnFinesAndPenaltiesRelatedToBusinessContracts
1981 Net result from disposal of non-current assets Concept (Monetary) For Period Credit ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment
1982 Curtailment and result of remeasurement of pension obligations Concept (Monetary) For Period Credit mtl:GainsLossesArisingFromCurtailmentAndRemeasurementOfDefinedBenefitLiabilityAsset
1983 Revision in estimated cash flows of rehabilitation provision Concept (Monetary) For Period Credit mtl:GainsLossesArisingFromRevisionInEstimatedCashFlowsOfRehabilitationProvision
1984 Insurance compensation Concept (Monetary) For Period Credit ifrs-full:IncomeArisingFromInsuranceContracts
1985 Other Concept (Monetary) For Period Credit mtl:OtherOperatingIncome
1986 Total Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
1987 1148 - Disclosure - Other Income/Expenses - Summary of Finance Income (Detail) Network

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1988 Implied Table Table

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1989 Finance income [abstract] Abstract mtl:FinanceIncomeAbstract
1990 Effect of restructuring of loans and finance leases Concept (Monetary) For Period Credit mtl:PrincipalAndInterestReceivedOnLoans
1991 Remeasurement of fair value of financial instruments Concept (Monetary) For Period Credit mtl:RemeasurementGainLossOfFairValue
1992 Interest income from investments Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnHeldtomaturityInvestments
1993 Income from the discounting of financial instruments Concept (Monetary) For Period Credit mtl:IncomeFromDiscountingOfFinancialInstruments
1994 Total Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
1995 1149 - Disclosure - Other Income/Expenses - Summary of Finance Costs (Detail) Network

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1996 Implied Table Table

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*

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1998 Interest on loans and borrowings Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnBorrowings
1999 Fines and penalties on overdue loans and borrowing payments and overdue interest payments Concept (Monetary) For Period Debit mtl:FinesAndPenaltiesOnBorrowings
2000 Finance charges payable under finance leases Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnFinanceLeases
2001 Fines and penalties on overdue finance leases Concept (Monetary) For Period Debit mtl:FinesAndPenaltiesOnFinanceLeases
2002 Total finance costs related to loans, borrowings and finance leases Concept (Monetary) For Period Debit mtl:FinanceCostsRelatedToLoansBorrowingsAndFinanceLeases
2003 Interest expenses under pension liabilities Concept (Monetary) For Period Debit mtl:NetInterestExpenseFromPensionAndOtherPostEmploymentBenefitPlans
2004 Unwinding of discounting of financial instruments Concept (Monetary) For Period Debit mtl:ExpenseRelatedToDiscountingOfFinancialInstruments
2005 Remeasurement of fair value of financial instruments Concept (Monetary) For Period Debit ifrs-full:LossesOnChangeInFairValueOfDerivatives
2006 Unwinding of discount on provisions Concept (Monetary) For Period Debit ifrs-full:ExpenseDueToUnwindingOfDiscountOnProvisions
2007 Total Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
2008 1150 - Disclosure - Other Income/Expenses - Finance costs - Additional Information (Detail) Network

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2009 Implied Table Table

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2011 Discounting related to put option associated with sales of share Concept (Monetary) For Period Debit mtl:DiscountingExpenseRelatedToPutOptionAssociatedWithSalesOfShare
2012 1151 - Disclosure - Other Income/Expenses - Summary of Other Income (Detail) Network

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2013 Implied Table Table

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2015 Write-off of trade and other payables with expired legal term Concept (Monetary) For Period Credit mtl:WriteoffOfTradeAndOtherPayablesWithExpiredLegalTerm
2016 Gain on royalty and other proceeds associated with disposal of Bluestone Concept (Monetary) For Period Credit mtl:RoyaltiesAndOtherIncomeRelatedPartyTransactions
2017 Gain on final settlements from subsidiaries' disposal occurred in previous years Concept (Monetary) For Period Credit mtl:GainOnDisposalOfInvestmentsInSubsidiaries
2018 Gain on forgiveness and restructuring of trade and other payables Concept (Monetary) For Period Credit mtl:GainOnAccountsPayableForgivenessAndRestructure
2019 Dividends received Concept (Monetary) For Period Credit mtl:DividendsIncome
2020 Other income Concept (Monetary) For Period Credit mtl:OtherIncomeOther
2021 Total Concept (Monetary) For Period Credit mtl:OtherNonOperatingIncome1
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2023 Implied Table Table

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*

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2024 Disclosure of other income (expense) [abstract] Abstract mtl:DisclosureOfOtherIncomeExpenseAbstract
2025 Loss on sales and purchases of foreign currencies Concept (Monetary) For Period Debit ifrs-full:NetForeignExchangeLoss
2026 VEB commissions write off Concept (Monetary) For Period Debit mtl:WriteoffOfCommissions
2027 Provision on non-recoverable advances to pension funds Concept (Monetary) As Of Credit ifrs-full:ProvisionsForEmployeeBenefits
2028 Other expenses Concept (Monetary) For Period Debit mtl:OtherExpenses1
2029 Total Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByFunction
2030 1153 - Disclosure - Other Income/Expenses - Other income and other expense - Additional Information (Detail) Network

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2031 Finance Costs [table] Table

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2037 1154 - Disclosure - Segment Information - Additional Information (Detail) Network

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2038 Disclosure of operating segments [table] Table

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2044 Concentration of risk percentage Concept (Percent) For Period ifrs-full:PercentageOfEntitysRevenue
2045 1155 - Disclosure - Segment Information - Summary of Segment Information and Consolidated Assets, Liabilities and Operating Results (Detail) Network

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2046 Disclosure of operating segments [table] Table

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*

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2050 Elimination of intersegment amounts [member] Member ifrs-full:EliminationOfIntersegmentAmountsMember
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2057 Revenues from contracts with external customers Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
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2060 Gross margin, % Concept (Percent) For Period mtl:PercentageOfGrossProfit
2061 Depreciation and amortisation Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
2062 Loss on write-off of non-current assets Concept (Monetary) For Period ifrs-full:WritedownsReversalsOfPropertyPlantAndEquipment
2063 Impairment of goodwill and non-current assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
2064 Operating profit Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
2065 Share of profit (loss) of associates, net Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
2066 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
2067 Intersegment finance income Concept (Monetary) For Period Credit mtl:IntersegmentFinanceIncome
2068 Finance cost Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
2069 Intersegment finance cost Concept (Monetary) For Period Debit mtl:IntersegmentFinanceCost
2070 Loss after tax for the year from discontinued operations, net Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
2071 Income tax (expense) benefit Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
2072 Profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
2073 Segment assets Concept (Monetary) As Of Debit ifrs-full:Assets
2074 Segment liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
2075 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
2076 Capital expenditures Concept (Monetary) For Period Debit mtl:CapitalExpenditure
2077 1156 - Disclosure - Segment Information - Summary of Group's Revenues Segregated Between Domestic and Export Sales (Detail) Network

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2078 Disclosure of Group's Revenues Segregated Between Domestic and Export Sales [table] Table

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2081 Domestic - Russia [member] Member ifrs-full:CountryOfDomicileMember
2082 Domestic - other [member] Member mtl:OtherCountriesMember
2083 Country of domestic countries [member] Member mtl:CountryOfDomicileAndOtherCountriesMember
2084 Export [member] Member ifrs-full:ForeignCountriesMember
2085 Disclosure of Group's Revenues Segregated Between Domestic and Export Sales [Line Items] LineItems mtl:DisclosureOfGroupsRevenuesSegregatedBetweenDomesticAndExportSalesLineItems
2086 Revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
2087 1157 - Disclosure - Segment Information - Summary of Group's Total Revenues from External Customers by Geographic Area (Detail) Network

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*

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2088 Disclosure of major customers [table] Table

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*

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2091 External customers by geographic area [member] Member mtl:MajorCustomerByGeographicalAreaMember
2092 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
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2094 Domestic - Russia [member] Member ifrs-full:CountryOfDomicileMember
2095 Asia [member] Member srt:AsiaMember
2096 Europe [member] Member srt:EuropeMember
2097 CIS [member] Member mtl:CISMember
2098 Middle East [member] Member mtl:MiddleEastMember
2099 USA [member] Member country:US
2100 Other regions [member] Member mtl:OtherRegionsMember
2101 Disclosure of External Customers by Geographic Area [Line Items] LineItems ifrs-full:DisclosureOfMajorCustomersLineItems
2102 Revenue based on location of the customer Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
2103 1158 - Disclosure - Segment Information - Summary of Carrying Amounts of Mineral Licenses and Property, Plant and Equipment Pertaining to Group's Major Operations (Detail) Network

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*

 http://www.mechel.com/taxonomy/role/DisclosureSegmentInformationSummaryOfCarryingAmountsOfMineralLicensesAndPropertyPlantAndEquipmentPertainingToGroupsMajorOperations
2104 Disclosure of geographical areas [table] Table

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 ifrs-full:DisclosureOfGeographicalAreasTable
2105 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
2106 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
2107 Operating segments [member] Member ifrs-full:OperatingSegmentsMember
2108 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2109 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2110 Domestic - Russia [member] Member ifrs-full:CountryOfDomicileMember
2111 Germany [member] Member country:DE
2112 Austria [member] Member country:AT
2113 Czech Republic [member] Member country:CZ
2114 Romania [member] Member country:RO
2115 Domestic - other [member] Member mtl:OtherCountriesMember
2116 Disclosure of geographical areas [line items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
2117 Carrying amounts of mineral licenses and property, plant and equipment pertaining to major operations Concept (Monetary) As Of Debit mtl:MineralLicensesAndPropertyPlantAndEquipment
2118 1159 - Disclosure - Segment Information - Summary of Group's Revenues from External Customers by Major Products (Detail) Network

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*

 http://www.mechel.com/taxonomy/role/DisclosureSegmentInformationSummaryOfGroupsRevenuesFromExternalCustomersByMajorProducts
2119 Disclosure of products and services [table] Table

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*

 ifrs-full:DisclosureOfProductsAndServicesTable
2120 Segments [axis] Axis ifrs-full:SegmentsAxis
2121 Segments [member] Member ifrs-full:SegmentsMember
2122 Mining segments [member] Member mtl:MiningSegmentsMember
2123 Steel segments [member] Member mtl:SteelSegmentsMember
2124 Power segments [member] Member mtl:PowerSegmentsMember
2125 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
2126 Products and services [member] Member ifrs-full:ProductsAndServicesMember
2127 Coal and middlings [member] Member mtl:CoalAndMiddlingsMember
2128 Coke and chemical products [member] Member mtl:CokeAndChemicalProductsMember
2129 Iron ore concentrate [member] Member mtl:IronOreConcentrateMember
2130 Other [member] Member mtl:OtherProductsMember
2131 Long steel products [member] Member mtl:LongSteelProductsMember
2132 Hardware [member] Member mtl:HardwareMember
2133 Flat steel products [member] Member mtl:FlatSteelProductsMember
2134 Forgings and stampings [member] Member mtl:ForgingsAndStampingsMember
2135 Semi-finished steel products [member] Member mtl:SemifinishedSteelProductsMember
2136 Ferrosilicon [member] Member mtl:FerrosiliconMember
2137 Steel pipes [member] Member mtl:SteelPipesMember
2138 Electricity [member] Member mtl:ElectricityMember
2139 Disclosure of products and services [line items] LineItems ifrs-full:DisclosureOfProductsAndServicesLineItems
2140 Revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
2141 1160 - Disclosure - Operating Lease Commitments - Additional Information (Detail) Network

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*

 http://www.mechel.com/taxonomy/role/DisclosureOperatingLeaseCommitmentsAdditionalInformation
2142 Disclosure Of Operating Lease Commitment [table] Table

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*

 mtl:DisclosureOfOperatingLeaseCommitmentTable
2143 Range [axis] Axis ifrs-full:RangeAxis
2144 Ranges [member] Member ifrs-full:RangesMember
2145 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2146 Top of range [member] Member ifrs-full:TopOfRangeMember
2147 Classes of Assets [Axis] Axis ifrs-full:ClassesOfAssetsAxis
2148 Assets [member] Member ifrs-full:ClassesOfAssetsMember
2149 Operating property and land leases [member] Member mtl:OperatingPropertyAndLandLeasesMember
2150 Land leases to explore or use of mineral deposits and other facilities [member] Member mtl:LandUnderLeaseMember
2151 Disclosure of operating lease commitment [line items] LineItems mtl:DisclosureOfOperatingLeaseCommitmentLineItems
2152 Lease term Concept (Year) For Period mtl:LeaseTerms
2153 Property and land lease expenses Concept (Monetary) For Period Debit ifrs-full:ContingentRentsRecognisedAsExpenseClassifiedAsOperatingLease
2154 Future minimum rentals payable Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
2155 1161 - Disclosure - Operating Lease Commitments - Summary of Future Minimum Rentals Payable under Non-Cancellable Operating Leases (Detail) Network

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 http://www.mechel.com/taxonomy/role/DisclosureOperatingLeaseCommitmentsSummaryOfFutureMinimumRentalsPayableUnderNonCancellableOperatingLeases
2156 Disclosure Of Operating Lease Commitment [table] Table

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*

 mtl:DisclosureOfOperatingLeaseCommitmentTable
2157 Maturity [axis] Axis ifrs-full:MaturityAxis
2158 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2159 Payable in 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
2160 After one year but not more than five years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
2161 More than five years [member] Member ifrs-full:LaterThanFiveYearsMember
2162 Disclosure of operating lease commitment [line items] LineItems mtl:DisclosureOfOperatingLeaseCommitmentLineItems
2163 Total rentals payable Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease

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