Disclosure of climate change [Table] Disclosure of climate change [table] Gains (losses) on financial assets at fair value through profit or loss Realized loss from change in fair value of financial instrument This member stands for the information pertaining to lease agreement. Lease agreements Taxes [Axis] Taxes [Domain] Social Integration Program Pis and Contribution for Social Security Financing Cofins [Member] Lease Agreement [Member] Parques Eolicos De La Buena Ventura S.A. [member] Additional allowance Tax recovery of PIS and COFINS credits Percentage of voting capital in control group Percentage of voting capital increased in control group Percentage of voting capital increased in control group Number of shares to be purchased under agreement The percentage of company voting capital increased in control group upon the closing of the transaction under share purchase agreement. The number of shares to be purchased under agreement. This member stands for the information pertaining to One percent change, All foreign exchange exposure vs USD dollar foreign exchange risks. Cover page. Document Information [Table] Classes of share capital [axis] Share capital [member] American Depositary Shares [Member] American Depositary Shares (“ADSs”) American Depositary Shares [Member]. Ordinary Shares Ordinary shares [member] Entity Addresses, Address Type [Axis] Address Type [Domain] Business Contact [Member] Business Contact Document Information [Line Items] Entity Registrant Name Document Type Document Registration Statement Document Shell Company Report Document Transition Report Document Annual Report Entity File Number Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Entity Current Reporting Status Entity Voluntary Filers Entity Well-known Seasoned Issuer Entity Emerging Growth Company Entity Interactive Data Current Entity Common Stock, Shares Outstanding (in shares) Entity Shell Company Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Title of 12(b) Security Trading Symbol Security Exchange Name ICFR Auditor Attestation Flag Entity Ex Transition Period Document Accounting Standard Contact Personnel Name Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Postal Zip Code Entity Address, City or Town Entity Address, Country City Area Code Local Phone Number Auditor Name Auditor Firm ID Auditor Location CONSOLIDATED INCOME STATEMENT Continuing operations Revenues Net sales IFRS - Net Sales Cost of sales ifrs-full_CostOfSales Cost of sales Gross profit Gross profit Selling, general and administrative expenses ifrs-full_SellingGeneralAndAdministrativeExpense Total selling, general and administrative expense Total selling, general and administrative expense Impairment loss (reversal of impairment loss) recognised in profit or loss Impairment charge Impairment charge Other operating income Other operating income Other operating expenses ifrs-full_OtherExpenseByFunction Other expense Other operating expenses IFRS - operating income ifrs-full_ProfitLossFromOperatingActivities Operating income (loss) Finance Income (*) Finance income ifrs-full_FinanceCosts Finance cost Other financial results Other financial results Income (loss) before equity in earnings of non-consolidated companies and income tax Income (loss) before equity in earnings of non-consolidated companies and income tax Loss income before equity in earnings of nonconsolidated companies and income tax The (loss) income before equity in earnings of non-consolidated companies and income tax. Equity in earnings of non-consolidated companies Equity in earnings of non-consolidated companies Income (loss) before income tax Income before income tax Profit (loss) before tax Income (loss) before income tax ifrs-full_IncomeTaxExpenseContinuingOperations Tax charge Income tax Tax charge Income (loss) for the year ifrs-full_ProfitLossFromContinuingOperations Attributable to: Shareholders' equity Net income for the year attributable to owners of the parent ifrs-full_ProfitLossAttributableToNoncontrollingInterests Non-controlling interests (Loss) income for the year (Loss) income for the year (Loss) income for the year Income (loss) for the year Earnings per share attributable to shareholders' equity during the year: Weighted average number of ordinary shares (thousands) (in shares) ifrs-full_WeightedAverageShares Miscellaneous other operating expense Other The amount of earnings per share from continuing operations when the basic and diluted measurements are equal. Basic and diluted earnings (losses) per share (U.S. dollars per share) Basic and diluted earnings (loss) per share from continuing operations Basic and diluted earnings (losses) per ADS (U.S. dollars per ADS) The amount of basic and diluted earnings (losses) per American depositary share (ADS) from continuing operations. Each ADS equals two shares. Basic And Diluted Earnings (Loss) Per American Depositary Share From Continuing Operations CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME Items that may be subsequently reclassified to profit or loss: Change in value of cash flow hedges and instruments at fair value ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss Income tax relating to components of other comprehensive income Other comprehensive income loss net of tax exchange differences on translation attributable to nonconsolidated companies - Currency translation adjustment Translation differences The amount of other comprehensive income (loss), net of tax, attributable to non-consolidated companies related to exchange differences when financial statements of foreign operations are translated. - Changes in the fair value of derivatives held as cash flow hedges and others The amount of other comprehensive income, before tax, attributable to non-consolidated companies related to derivatives held as cash flow hedges and others. Other Comprehensive Income, Net of Tax, Cash Flow Hedges and Others Attributable to Nonconsolidated Companies ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax Total other comprehensive income that will be reclassified to profit or loss, net of tax Items that will not be reclassified to profit or loss: Remeasurements of post-employment benefit obligations ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss Income tax on items that will not be reclassified Remeasurements of post-employment benefit obligations of non-consolidated companies ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax Total other comprehensive income that will not be reclassified to profit or loss, net of tax Other comprehensive (loss) income for the year Other comprehensive (loss) for the year Total comprehensive income (loss) for the year Total comprehensive (loss) income for the year Total comprehensive income (loss) for the year Total comprehensive income (loss) for the year attributable to: Attributable to: Shareholders' equity Comprehensive income, attributable to owners of parent Total comprehensive income for the year, net of tax, attributable to owners of the parent Non-controlling interests ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests CONSOLIDATED STATEMENT OF FINANCIAL POSITION ASSETS Assets Non-current assets Non-current assets [abstract] Property, plant and equipment, net Beginning of the year End of the year Intangible assets, net ifrs-full_IntangibleAssetsAndGoodwill Total intangible assets and goodwill Values at the beginning of the year Values at the end of the year Cost and Depreciation end of the year Cost and Depreciation beginning of the year Right-of-use assets, net Right-of-use assets Value At the end of the year Investments in non-consolidated companies Total investments in subsidiaries, joint ventures and associates At the beginning of the year Other investments - non-current Other investments Other investments Derivative financial instruments ifrs-full_NoncurrentDerivativeFinancialAssets Deferred tax assets Deferred tax assets Deferred tax assets to be recovered after 12 months Receivables, net Total trade and other non-current receivables Trade and other non-current receivables before the allowance for doubtful accounts Non-current assets Non-current assets Non-current assets Current assets Current assets [abstract] Inventories, net Inventories Total current inventories Receivables and prepayments, net Current prepayments and other current assets Current tax assets Current tax assets, current Trade receivables Trade receivables, net Current trade receivables Net Value Derivative financial instruments ifrs-full_CurrentDerivativeFinancialAssets Other investments - current Other investments Other investments Cash at banks, liquidity funds and short - term investments Cash and bank deposits Cash and cash equivalents Total cash and cash equivalents Current assets Current assets Current assets Current assets Total assets Total assets At the beginning of the year At the end of the year EQUITY Equity [abstract] Shareholders' equity Non-controlling interests Total equity ifrs-full_Equity Total equity Balance Balance LIABILITIES Liabilities Non-current liabilities [abstract] Non-current liabilities Borrowings ifrs-full_LongtermBorrowings Borrowings Total non-current portion of non-current borrowings At the beginning of the year, noncurrent At the end of the year, noncurrent Lease liabilities ifrs-full_NoncurrentLeaseLiabilities Deferred tax liabilities to be settled after 12 months Deferred tax liabilities Deferred tax liabilities Other liabilities ifrs-full_OtherNoncurrentLiabilities Other non-current liabilities Provisions ifrs-full_NoncurrentProvisions Non-current liabilities Non-current liabilities: Non-current liabilities Current liabilities Current liabilities [abstract] Borrowings Borrowings At the beginning of the year, current At the end of the year, current Total current borrowings and current portion of non-current borrowings Lease liabilities ifrs-full_CurrentLeaseLiabilities Derivative financial instruments ifrs-full_CurrentDerivativeFinancialLiabilities Current tax liabilities ifrs-full_CurrentTaxLiabilitiesCurrent Current tax liabilities, current Other liabilities ifrs-full_OtherCurrentLiabilities Other current liabilities Current provisions Provisions Customer advances ifrs-full_CurrentAdvances Trade payables Trade payables Current liabilities Current liabilities Current liabilities Total liabilities Total liabilities ifrs-full_EquityAndLiabilities Total equity and liabilities CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Statement of changes in equity [table] Components of equity [axis] Equity [member] Total Equity attributable to owners of parent [member] Owners of the parent [member] Share Capital Issued capital [member] Legal Reserves Statutory reserve [member] Share Premium Share premium [member] Reserve of exchange differences on translation [member] Currency Translation Adjustment Other reserves [member] Other Reserves Retained earnings [member] Retained Earnings Non-controlling interests [member] Non-controlling interests Statement of changes in equity [line items] CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Remeasurements of post-employment benefit obligations, net of taxes Change in value of instruments at fair value through other comprehensive income and cash flow hedges, net of taxes From other comprehensive income of non-consolidated companies Acquisition and other changes in non-controlling interests ifrs-full_DividendsPaid Dividends recognised as distributions to owners Dividends paid in cash Dividends recognised as distributions to owners Authorized share capital (in shares) Number of shares authorised (in shares) Nominal value (in dollars per share) Par value per share (in dollars per share) Shares issued (in shares) Total number of shares issued (in shares) CONSOLIDATED STATEMENT OF CASH FLOWS Cash flows from operating activities Adjustments for: ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense Depreciation and amortization Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss Impairment charge ifrs-full_AdjustmentsForIncomeTaxExpense Income tax accruals less payments Adjustments for income tax expense ifrs-full_AdjustmentsForUndistributedProfitsOfAssociates Equity in earnings of non-consolidated companies Adjustments for finance income (cost) Interest accruals less payments, net Interest income (expense) ifrs-full_AdjustmentsForProvisions Changes in provisions Result of sale of subsidiaries Adjustments for gain (loss) on disposal of investments in subsidiaries, joint ventures and associates Income from the sale of Conduit business ifrs-full_IncreaseDecreaseInWorkingCapital Changes in working capital Increase (decrease) in working capital Currency translation adjustment and others Net cash provided by operating activities ifrs-full_CashFlowsFromUsedInOperatingActivities Cash flows from investing activities Capital expenditures Capital expenditures Capital expenditures The cash inflow (outflow) due to a decrease (increase) in advance to suppliers of property, plant and equipment. Cash Flows from (Used in) Decrease (Increase) in Advance to Suppliers of Property, Plant and Equipment Changes in advance to suppliers of property, plant and equipment Cash flows from losing control of subsidiaries or other businesses, classified as investing activities Proceeds from sale of subsidiaries, net of cash Proceeds from disposal of Conduit business Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities Acquisition of subsidiaries, net of cash acquired ifrs-full_PurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod Investment in companies under cost method Additions to associated companies ifrs-full_PurchaseOfInterestsInAssociates Repayment of loan by non-consolidated companies Proceeds from disposal of property, plant and equipment and intangible assets Dividends received from associates, classified as investing activities Dividends received from non-consolidated companies Changes in investments in securities ifrs-full_CashFlowsFromUsedInInvestingActivities Net cash (used in) provided by investing activities Cash flows from financing activities ifrs-full_DividendsPaidClassifiedAsFinancingActivities Dividends paid ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities Dividends paid to non-controlling interest in subsidiaries Changes in non-controlling interests The cash inflow (outflow) from changes in ownership interests in subsidiaries that do not result in a loss of control. ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities Payments of lease liabilities Proceeds from borrowings ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities Repayments of borrowings ifrs-full_CashFlowsFromUsedInFinancingActivities Net cash used in financing activities ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges Increase (decrease) in cash and cash equivalents Increase (decrease) in cash and cash equivalents Cash and cash equivalents Cash and cash equivalents if different from statement of financial position [abstract] Movement in cash and cash equivalents At the beginning of the year At December 31, ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition Cash and cash equivalents ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents Effect of exchange rate changes Cash and cash equivalents Cash and cash equivalents Cash and cash equivalents: ifrs-full_BankOverdraftsClassifiedAsCashEquivalents Bank overdrafts Disclosure of General Information About Financial Statements [Abstract] Disclosure of general information about financial statements [text block] I. GENERAL INFORMATION Disclosure of Summary of Significant Accounting Policies [Abstract] II. Accounting Policies Disclosure of significant accounting policies [text block] Disclosure of detailed information about financial instruments [abstract] III. FINANCIAL RISK MANAGEMENT Disclosure of financial risk management [text block] Disclosure of operating segments [abstract] Disclosure of entity's operating segments [text block] Note 1 - Segment Information Disclosure of Cost of Sales [Abstract] Disclosure of cost of sales [text block] Note 2 - Cost of Sales Selling, general and administrative expense [abstract] Note 3 - Selling, General and Administrative Expenses Disclosure of general and administrative expense [text block] Disclosure of labor costs [abstract] Disclosure of employee benefits [text block] 4. Labor costs (included in Cost of sales and in Selling, general and administrative expenses) Disclosure of impairment loss and reversal of impairment loss [abstract] Note 5 - Impairment charge Disclosure of impairment of assets [text block] Disclosure of other operating income expense [abstract] Note 6 - Other Operating Income and Expenses Disclosure of other operating income (expense) [text block] Disclosure of Financial Results [Abstract] Disclosure of finance income (cost) [text block] Note 7 - Financial Results Major components of tax expense (income) [abstract] Note 8 - Income Tax Disclosure of income tax [text block] Disclosure of Dividends Distribution [Abstract] Note 9 - Dividends Distribution Disclosure of dividends [text block] Disclosure of detailed information about property, plant and equipment [abstract] Note 10 - Property, Plant and Equipment, Net Disclosure of property, plant and equipment [text block] Disclosure of detailed information about intangible assets [abstract] Note 11 - Intangible Assets, Net Disclosure of intangible assets [text block] Presentation of leases for lessee [abstract] Note 12 - Right-of-use Assets, Net and Lease Liabilities Disclosure of leases [text block] Disclosure of unconsolidated structured entities [abstract] Note 13 - Investments in Non-consolidated Companies Disclosure of interests in other entities [text block] Trade and other non-current receivables [abstract] Note 14 - Receivables - Non Current Disclosure of non-current receivables [text block] The disclosure for non-current receivables. Classes of current inventories [abstract] Disclosure of inventories [text block] Note 15 - Inventories, Net Current prepayments and current accrued income [abstract] Note 16 - Receivables and Prepayments, Net Disclosure of prepayments and other assets [text block] Disclosure of Current Tax Receivables and Payables [Abstract] Note 17 - Current Tax Assets and Liabilities Disclosure of tax receivables and payables [text block] Trade and other receivables [abstract] Note 18 - Trade Receivables, Net Disclosure of trade and other receivables [text block] Disclosure of Cash and Cash Equivalents and Other Investments [Abstract] Note 19 - Cash and Cash Equivalents and Other Investments Disclosure of cash and cash equivalents and other investments [text block] The disclosure of cash and cash equivalents and other investments. Borrowings [abstract] Note 20 - Borrowings Disclosure of borrowings [text block] Disclosure of temporary difference, unused tax losses and unused tax credits [abstract] Disclosure of deferred taxes [text block] Note 21 - Deferred tax assets and liabilities Disclosure of Other Liabilities [Abstract] Note 22 - Other Liabilities Disclosure of other liabilities [text block] Disclosure of Non-current allowances and provisions [Abstract] The disclosure of non-current allowances and provisions. Disclosure of non-current allowances and provisions [text block] Note 23 - Non-current allowances and provisions Disclosure of Current allowances and provisions [Abstract] Disclosure of Current allowances and provisions [text block] The disclosure of current allowances and provisions. Note 24 - Current allowances and provisions Disclosure of derivative financial instruments [text block] Note 25 - Derivative Financial Instruments Disclosure of Contingencies, Commitments and Restrictions on Distribution of Profits [Abstract] Disclosure of commitments and contingent liabilities [text block] Note 26 - Contingencies, Commitments and Restrictions On the Distribution of Profits Disclosure of Cancellation of title Deed in Affiliates [Abstract] The entire disclosure describing the cancellation of title deed in Affiliated entities. Disclosure of Cancellation of Title Deed in Affiliates [Text Block] Note 27 - Cancellation of title deed in Saudi Steel Pipe Company Foreign exchange rates [abstract] The entire disclosure describing the foreign exchange control measures in foreign countries. Disclosure of Foreign Exchange Control Measures in Foriegn Countries [text block] Note 28 - Foreign exchange control measures in Argentina Disclosure of Cash Flow [Abstract] Note 29 - Cash Flow Disclosures Disclosure of cash flow statement [text block] Disclosure of transactions between related parties [abstract] Disclosure of related party [text block] Note 30 - Related Party Transactions Additional information [abstract] Note 31 - Principal accountant fees Disclosure of additional information [text block] Disclosure of subsidiaries [abstract] Principal subsidiaries Disclosure of interests in subsidiaries [text block] Note 32 - Principal Subsidiaries Disclosure of detailed information about business combination [abstract] Disclosure of business combinations [text block] Note 33 - Business Combinations Disclosure of Nationalization of Venezuelan subsidiaries [Abstract] Note 34 - Nationalization of Venezuelan Subsidiaries Disclosure of Nationalization of Subsidiaries [text block] The entire disclosure for the nationalization of subsidiaries. Disclosure of other relevant information [Abstract] Other relevant information The entire disclosure describing of other relevant informations. Note 35 - Other relevant information Disclosure of other relevant information [text block] Extraordinary and Unusual Items 1 [Abstract] Note 36 - The Russia-Ukraine armed conflict and its impact on Tenaris’s operations The entire disclosure for an event or transaction that is unusual in nature or infrequent in occurrence, or both. Unusual or Infrequent Items 1 Disclosure [text block] Disclosure of non-adjusting events after reporting period [abstract] Disclosure of events after reporting period [text block] Note 38 - Events after the reporting period Disclosure of events after reporting period and approval date [Abstract] Note 39 - Update as of March 31, 2023 The entire disclosure for events after the reporting period and subsequent to the approval of the financial statements by the board of directors. Disclosure of events after reporting period and approval date [text block] Disclosure of Delisting of Shares from Stock Exchange [Abstract] The entire disclosure describing the delisting of shares from a stock exchange. Delisting of shares from stock exchange [text block] Note 34 - Delisting of Tenaris's Shares from the Buenos Aires Stock Exchange Disclosure of analysis of single amount of discontinued operations [abstract] Disclosure of non-current assets held for sale and discontinued operations [text block] Note 29 - Discontinued Operations Disclosure of Significant Accounting Policies [Abstract] Description of accounting policy for basis of presentation [text block] The description of the entity's accounting policy for basis of presentation. Description of accounting policy for investment in associates and joint ventures [text block] Description of accounting policy for segment reporting [text block] Description of accounting policy for foreign currency translation [text block] Description of accounting policy for property, plant and equipment [text block] Description of accounting policy for intangible assets and goodwill [text block] Description of accounting policy for leases [text block] Description of accounting policy for impairment of non-financial assets [text block] Description of accounting policy for investments other than investments accounted for using equity method [text block] Description of accounting policy for measuring inventories [text block] Description of accounting policy for trade and other receivables [text block] Description of accounting policy for determining components of cash and cash equivalents [text block] Description of accounting policy for issued capital [text block] Description of accounting policy for borrowings [text block] Description of accounting policy for income tax [text block] Description of accounting policy for employee benefits [text block] Description of accounting policy for provisions [text block] Description of accounting policy for trade and other payables [text block] Description of accounting policy for recognition of revenue [text block] Description of accounting policy for expenses [text block] Description of accounting policy for earnings per share [text block] Description of accounting policy for financial instruments [text block] Description of accounting policy for non-current assets or disposal groups classified as held for sale and discontinued operations [text block] Disclosure of detailed information about the estimated useful lives of property, plant and equipment [text block] The disclosure of detailed information about the estimated useful lives of property, plant and equipment. Amount by which value assigned to key assumption must change in order for unit's recoverable amount to be equal to carrying amount [text block] Text block disclosure regarding the amount by which value that has been assigned to a key assumption must change in order for a unit's recoverable amount to be equal to its carrying amount. Disclosure of effect of changes in foreign exchange rates [text block] Disclosure of financial instruments by type of interest rate [text block] Disclosure of fair value of financial instruments [text block] Disclosure of fair value measurement [text block] Disclosure of operating segments [text block] Disclosure of geographical areas [text block] Segment revenues by market [text block] Text block disclosure of segment revenues by market. Disclosure of detailed information about cost of sales [text block] The disclosure of detailed information about cost of sales. Disclosure of detailed information about selling, general and administrative expenses [text block] The disclosure of detailed information about selling, general and administrative expenses. Disclosure of detailed information about labor costs [text block] The disclosure of detailed information about labor costs. Disclosure of information about employees [text block] Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [text block] Disclosure of Sensitivity Analysis for Additional Impairment to Changes in Key Assumptions [text block] Disclosure of detailed information about other operating income and expenses [text block] The disclosure of detailed information about other operating income and expenses. Disclosure of detailed information about financial income (cost) [text block] The disclosure of detailed information about financial income (cost). [Refer: Finance income (cost)] Disclosure of detailed information about income tax expense (benefit) [text block] The disclosure of detailed information about income tax expense (benefit). Disclosure of difference between income before tax and the theoretical amount that would arise using tax rate in each country [text block] The disclosure of detailed information about the differences between income before tax and the theoretical amount that would arise using the tax rate in each country. Disclosure of detailed information about property, plant and equipment [text block] Disclosure of reconciliation of changes in intangible assets and goodwill [text block] Disclosure of information for cash-generating units [text block] Disclosure of quantitative information about right-of-use assets [text block] Lease liability evolution [text block] Text block disclosure for the evolution of the lease liability. Disclosure of unconsolidated structured entities [text block] Disclosure of detailed information about principal non-consolidated companies [text block] The disclosure of detailed information about principal non-consolidated companies. Disclosure of detailed information about selected financial information [text block] The disclosure of detailed information about selected financial information. Disclosure of detailed information about non-current receivables [text block] The disclosure for detailed information about non-current receivables. Disclosure of detailed information about inventories [text block] The disclosure of detailed information about inventories. Disclosure of detailed information about receivables and prepayments [text block] The disclosure of detailed information about receivables and prepayments. Disclosure of detailed information about current tax assets [text block] The disclosure of detailed information about current tax assets. Disclosure of detailed information about tax liabilities [text block] The disclosure of detailed information about current tax liabilities. Disclosure of detailed information about current trade receivables [text block] The disclosure of detailed information about current trade receivables. The tabular disclosure of detailed information about the aging analysis of trade receivables. Disclosure if detailed information about the aging of trade receivables [text block] Detailed disclosure of cash and cash equivalents and other investments [text block] The detailed disclosure of cash and cash equivalents and other investments. Disclosure of detailed information about borrowings [text block] Disclosure of detailed information about the maturity of borrowings [text block] The disclosure of detailed information about the maturity of borrowings. Disclosure of detailed information about significant borrowings [text block] The disclosure of detailed information about significant borrowings. Disclosure of detailed information about weighted average interest rates of borrowings [text block] The disclosure of detailed information about weighted average interest rates of borrowings. Disclosure of detailed information about borrowings by currency and rate [text block] The disclosure of detailed information about borrowings by currency and rate. Disclosure of borrowings evolution [text block] The entire disclosure for borrowings changes. Disclosure of deferred tax assets and liabilities [text block] The disclosure of deferred tax assets and liabilities. Disclosure of temporary difference, unused tax losses and unused tax credits [text block] Deferred tax [text block] The disclosure of deferred tax. Disclosure of other non-current liabilities [text block] Disclosure of net defined benefit liability (asset) [text block] Disclosure of sensitivity analysis for actuarial assumptions [text block] Disclosure of fair value of plan assets [text block] Disclosure of other current liabilities [text block] Disclosure of detailed information about non-current allowances and provisions deducted from non-current receivables [text block] The disclosure of detailed information about non-current allowances and provisions deducted from non-current receivables. Disclosure of detailed information about non-current allowances and provisions from liabilities [text block] The disclosure of detailed information about non-current allowances and provisions from liabilities. Disclosure of detailed information about current allowances and provisions deducted from assets [text block] The disclosure of detailed information about current allowances and provisions deducted from assets. Disclosure of detailed information about current allowances and provisions from liabilities [text block] The disclosure of detailed information about current allowances and provisions from liabilities. Disclosure of detailed information about derivative financial instruments [text block] The disclosure of detailed information about derivative financial instruments. Disclosure of detailed information about hedged items [text block] Disclosure of detailed information of the hedge reserve evolution [text block] The disclosure of detailed information of the hedge reserve evolution. Disclosure of detailed information about cash flow disclosures [text block] The disclosure of detailed information about cash flow disclosures. Disclosure of transactions between related parties [text block] Auditor's remuneration [abstract] Disclosure of auditors' remuneration [text block] Disclosure of detailed information about business combination [table] Business combinations [axis] Entity's total for business combinations [member] Ipsco Tubulars Inc [Member] This member stands for a component of IPSCO Tubulars, Inc. which acquired by entity through business combination. IPSCO Tubulars, Inc. Saudi Steel Pipe Company [member] Information related to Saudi Steel Pipe Company. Disclosure of detailed information about business combination [line items] Disclosure of detailed information about business combination [text block] Acquisition of IPSCO [member] Represents information related to the acquisition of IPSCO Tubulars, Inc., a U.S. manufacturer of steel pipes. Disclosure of subsidiaries [text block] Principal subsidiaries Disclosure of discontinued operations net income components [text block] The disclosure of discontinued operations net income components. Disclosure of sale of discontinued operations [text block] The complete disclosure of the sale of discontinued operations. Disclosure of discontinued operations [text block] Disclosure of associates [table] Associates [axis] Entity's total for associates [member] Ternium S.A. [member] This member stands for the information pertaining to Ternium S.A. Usiminas [member] Information related to Usiminas. Subsidiaries [axis] Entity's total for subsidiaries [member] CONFAB INDUSTRIAL S.A. and subsidiaries [member] The entity CONFAB INDUSTRIAL S.A. and subsidiaries. Preference shares [member] Legal Entity [Axis] Entity [Domain] T/T Group [member] Related to the T/T Group. Ternium entitites [member] Related to Ternium entities. Confab [member] Information related to Confab. NSSMC [member] Related to the entity NSSMC. Previdencia Usiminas [member] Related to Previdencia Usiminas. Tecpetrol International S.A. [member] Related to the entity Tecpetrol International S.A. Tenaris [member] Related to Tenaris. Types of contracts [axis] Types of contracts [member] The new SHA [member] Related to the new SHA. Joint ventures [axis] Entity's total for joint ventures [member] Techgen s.a. [member] Information related to Techgen S.A. "Techgen". This member stands for the information pertaining to Global Pipe Company (“GPC”). Global Pipe Company [Member] Range [axis] Ranges [member] Top of range [member] Maximum Bottom of range [member] Minimum Classes of intangible assets and goodwill [axis] Intangible assets and goodwill [member] Information system projects [member] Intangible assets classified as information system projects. Licenses, patents, trademarks, and proprietary technology [member] Information related to licenses, patents, trademarks, and proprietary technology. Trademarks [member] Refers to information regarding trademarks. Customer-related intangible assets [member] Maverick acquisition [member] Represents the Maverick acquisition. Hydrill acquisition [member] Represents the Hydrill acquisition. Cash-generating units [axis] Entity's total for cash-generating units [member] OCTG (USA) [member] The cash generating unit OCTG (USA). Defined benefit plans [axis] Defined benefit plans [member] Unfunded defined benefit employee retirement plan for certain senior officers [member] Refers to the unfunded defined benefit employee retirement plan for certain senior officers. Funded post-employment benefits [member] This member stands for funded post-employment benefits. Geographical areas [axis] Geographical areas [member] Italy Canada USA Disclosure of associates [line items] Percentage of ownership Proportion of ownership interest in associate ifrs-full_ProportionOfVotingPowerHeldInAssociate Proportion of voting rights held in associate Number of shares subscribed to Number of shares subscribed to (in shares) Represents the amount of shares subscribed to. Shares subscribed to price per share Shares subscribed to, price per share (in BRL per share) Represents the price per share of shares subscribed to. Shares subscribed to value Shares subscribed to, value Represents the value of shares subscribed to. Interest in associate shares owned Interest in associate, shares owned (in shares) Represents the amount of shares owned of an associate entity. Shares bound to sha Shares bound to SHA (in shares) The amount of shares bound to SHA. Percent of company voting capital Percent of company voting capital The percent of a company's voting capital represented. ifrs-full_ProportionOfOwnershipInterestInJointVenture Proportion of ownership interest in joint venture Number of Board members can be appointed through the shareholders agreement The number of Board members can be appointed through the shareholders agreement by the entity at a date. Number of board members can be appointed through shareholders agreement Number of Board members The number of Board members by the entity at a date. Number of board members Assets recognised in entity's financial statements in relation to structured entities Goodwill or intangible assets recognized in relation to investments in non consolidated companies under the equity method The amount of impairment loss on equity method investment in non-consolidated companies. Impairment loss on equity method investment in nonconsolidated companies Impairment loss on equity method investment in non-consolidated companies Number Of major business segments Number of major business segments Represents the number of major business segments. Number of reportable operating segments Number of reportable operating segments Represents the number of reportable operating segments. Additional amortization expenses The amount of additional amortization expenses arising from re-estimation of assets useful lives, performed in accordance with IAS 38. Additional amortization expenses Finite lived intangible asset useful life Finite-lived intangible asset, useful life (Year) Represents the useful life of finite-lived intangible assets. ifrs-full_ResearchAndDevelopmentExpense Research and development expense ifrs-full_RemainingAmortisationPeriodOfIntangibleAssetsMaterialToEntity2019 Remaining amortisation period of intangible assets material to entity (Year) Amortization of intangible assets Amount of amortization of intangible assets attributable to selling, general and administrative expenses. Selling general and administrative expenses amortization of intangible assets Selling, general and administrative expenses, amortization of intangible assets Finite lived intangible asset residual value Finite-lived intangible asset, residual value Represents the aggregate expected value at the end of their useful life of a finite-lived intangible asset. Finite lived intangible asset residual useful life Finite-lived intangible asset, residual useful life (Year) Represents the residual useful life of a finite-lived intangible asset. ifrs-full_DescriptionOfDiscountRatesUsedInCurrentEstimateOfValueInUse Discount rate used in current estimate of value in use ifrs-full_AmountByWhichUnitsRecoverableAmountExceedsItsCarryingAmount Amount by which unit's recoverable amount exceeds its carrying amount ifrs-full_NumberOfSharesOutstanding Number of shares outstanding at end of period (in shares) Number of votes per share Number of votes, per share Represents the number of votes given to each share of stock. ifrs-full_LiabilityAssetOfDefinedBenefitPlans Net defined benefit liability (asset) at end of period Values at the beginning of the year At the end of the year Net defined contribution plan liability asset at end of period Net defined contribution plan liability (asset) at end of period The amount of deficit or surplus in a defined contribution plan, adjusted for any effect of limiting a net defined contribution asset to the asset ceiling. Employee benefits unit vesting period Employee benefits, unit vesting period (Year) Represents the period that units under an employee retention and long term incentive program vest ratably. Employee benefits company redemption period Employee benefits, company redemption period (Year) Represents the period at which the company will redeem units granted under the employee retention and long term inventive program. Represents the period that the company may exercise an option to for early redemption of units granted under the employee retention and long term incentive program. Employee benefits early redemption period Employee benefits, early redemption period (Year) Carrying value of units granted Carrying value of units granted Represents the carrying value of units granted to date under the employee retention and long term incentive program. ifrs-full_DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares Dilutive effect of share options on number of ordinary shares (in shares) Percentage of voting rights held in unconsolidated entities Percentage of voting rights held in unconsolidated entities The percentage of voting rights held in unconsolidated entities in which reporting entity has significant influence but not control. Period of lease term of short-term leases Period of lease term of short-term leases The period of lease term of short-term leases upon lease contract. The forecast period of cash flow projections used in cash-generating units. Forecast period of cash flow projections Forecast period of cash flow projections Growth rate used to extrapolate cash flow projections Nominal growth rate Maximum maturity period of fair value through other comprehensive income instruments for short-term nature Maximum maturity period of fair value through other comprehensive income instruments for short-term nature The maximum maturity period of financial assets at fair value through other comprehensive income (“FVOCI”) instruments for short-term nature. Disclosure of detailed information about property, plant and equipment [table] Classes of property, plant and equipment [axis] Property, plant and equipment [member] Buildings and improvements [member] This member stands for a class of property, plant and equipment representing buildings and equipment held by the entity for use in operations. Plant and production equipment [member] This member stands for a class of property, plant and equipment representing plant and production equipment used in operations. Vehicles, furniture and fixtures, and other equipment [member] This member stands for a class of property, plant and equipment representing vehicles, furniture and fixtures, and other equipment held by the entity for use in operations. Disclosure of detailed information about property, plant and equipment [line items] Useful life measured as period of time, property, plant and equipment Property, plant and equipment (Year) Additional depreciation expenses The amount of additional depreciation expenses arising from re-estimation of assets useful lives, performed in accordance with IAS 16. Additional depreciation expenses Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [table] Unobservable inputs [axis] Unobservable inputs [member] Discount rate, measurement input [member] Growth rate, measurement input [member] This member stands for a growth rate used as a measurement input. Projected change rate in future cash flows, measurement input [member] This member stands for the rate of change in projected cash flows as a measurement input. Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] Increase (decrease) in key assumption The amount by which value that has been assigned to a key assumption must change in order for a unit's recoverable amount to be equal to its carrying amount, expressed as a percentage. Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [table] Types of risks [axis] Risks [member] One percent change, Argentine Peso / U.S. dollar foreign exchange risk [member] Represents a one percent change in Argentine Peso / U.S. dollar foreign exchange risk. One percent change, Euro / U.S. dollar foreign exchange risk [member] Represents a one percent change in Euro / U.S. dollar foreign exchange risk. One percent change, Saudi Arabian Riyal / U.S. dollar foreign exchange risk [member] Represents a one percent change in Saudi Arabian Riyal / U.S. dollar foreign exchange risk. Customer concentration risk [member] Reflects the percentage that revenues or credit exposure in the period are from one or more significant customers. The risk is the materially adverse effects of loss of a significant customer. Counterparty risk [member] Represents the percentage of financial assets held with counter parties rated as investment grade. Liquidity risk [member] Commodity price risk [member] Hedging instruments [axis] Hedging instruments [member] Foreign exchange derivatives contracts [member] Represents foreign exchange derivatives contracts. Types of interest rates [axis] Interest rate types [member] Fixed interest rate [member] Classes of financial instruments [axis] Financial instruments, class [member] Guarantees under credit insurance [member] Represents guarantees under credit insurance. Letter of credit and other bank guarantees [member] Represents letter of credit and other bank guarantees. Other guarantees [member] Represents other guarantees. Financial guarantee contracts [member] Past due status [axis] Past due status [member] Past due [member] Represents a financial instrument which is past due. Classes of other provisions [axis] Other provisions [member] Allowance for doubtful accounts - trade receivables [member] Represents the allowance for doubtful accounts attributable to trade receivables. Currency [Axis] All Currencies [Domain] United States of America, Dollars Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] Debt to equity ratio Debt to equity ratio (as a ratio) The year-end ratio of debt to total equity (where “debt” comprises financial borrowings and “total equity” is the sum of financial borrowings and equity). The amount of currency exposure which impact profit and loss expressed as long/(short). Foreign exchange risk, currency exposure Currency exposure / functional currency Currency exposure / functional currency Reserve of exchange differences on translation Reclassification adjustments on exchange differences on translation of foreign operations, before tax Significant borrowings as of closing date Borrowings C and NC Total borrowings Total Borrowings ifrs-full_ShorttermBorrowings Current borrowings Loss on interest rate risk if market interest rates were higher The amount of potential loss on interest rate risk if the market interest rates were higher. ifrs-full_CreditExposure Credit exposure Exposure investment grade rated instruments Exposure investment-grade rated instruments (as a percent) The percentage for exposure investment-grade rated Instruments. Concentration risk percentage Concentration risk (as a percent) For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. The percentage of assets held that are liquid. Liquid financial assets (as a percent) Liquid financial assets percentage Liquid financial assets, percentage denominated by a specific currency (as a percent) Liquid financial assets percentage denominated by a specific currency The percentage of liquid financial assets that are denominated by a specific currency. ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets Transfers out of Level 1 into Level 2 of fair value hierarchy, assets held at end of reporting period The percentage of a financial liabilities carrying amount that represents its fair value. Financial liabilities, fair value as a percentage of carrying value (as a percent) Financial liabilities fair value as a percentage of carrying value Hedge accounting reserve Reserve of cash flow hedges, continuing hedges Hedge accounting reserve Hedge accounting reserve ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets Transfers out of Level 2 into Level 1 of fair value hierarchy, assets held at end of reporting period Maximum maturity period of cash and cash equivalents Maximum maturity period of cash and cash equivalents The maximum maturity period of cash and cash equivalents. Risk exposure associated with instruments sharing characteristic Direct exposure to financial instruments issued by European sovereign counterparties Maximum period of fixed price of commodities for short-term nature Maximum period of fixed price of commodities for short-term nature The maximum period of fixed price of commodities for short-term nature. Minimum maturity period of certificates of deposits Minimum maturity period of certificates of deposits The minimum maturity period of certificates of deposits. Argentine Peso / U.S. dollar foreign exchange risk [member] Represents a Argentine Peso / U.S. dollar foreign exchange risk. Euro / U.S. dollar foreign exchange risk [member] Represents a Euro / U.S. dollar foreign exchange risk. Saudi Arabian Riyal / US Dollar exchange risk [member] Represents information pertaining to Saudi Arabian Riyal/US Dollar exchange risk. Floating interest rate [member] Disclosure of detailed information about financial instruments [table] Categories of financial assets [axis] Financial assets, category [member] Financial assets at amortised cost, category [member] Financial assets at fair value through other comprehensive income, category [member] Financial assets at fair value through profit or loss, category [member] Levels of fair value hierarchy [axis] All levels of fair value hierarchy [member] Level 1 of fair value hierarchy [member] Level 2 of fair value hierarchy [member] Level 3 of fair value hierarchy [member] Classes of financial assets [axis] Financial assets, class [member] Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] Represents fixed income (time-deposit, zero coupon bonds, commercial papers). Represents U.S. Sovereign Bills. U.S. Sovereign Bills [Member] Represents Non - U.S. Sovereign Bills. Non - U.S. Sovereign Bills [Member] Certificates of Deposits [member] Securities classified as Certificates of Deposits. Commercial Papers [member] Securities classified as Commercial Papers. Other notes [member] Securities classified as other notes. Bonds and other fixed income [member] Represents bonds and other fixed income. U.S. government securities [member] Securities classified as U.S. government securities. Non - U.S. government securities [member] Securities classified as Non - U.S. government securities. Corporates securities [member] Securities classified as Corporates securities. Structured Notes [member] Securities classified as Structured Notes. Other investments [member] Investments classified as other. Classes of assets [axis] Assets [member] Derivatives [member] Other receivables [member] Assets classified as other receivables. Other receivables (non-Financial) [member] Assets classified as other receivables (non-financial). Classes of liabilities [axis] Liabilities [member] Derivative liabilities [member] Related to derivative liabilities. Disclosure of detailed information about financial instruments [line items] Derivative financial instruments Derivatives with positive fair values Other receivables Total Ending net book amount Opening net book amount Lease Liabilities Lease Liabilities C and NC Derivative financial instruments ifrs-full_DerivativeFinancialLiabilities Derivatives with negative fair values Total ifrs-full_FinancialLiabilities Disclosure of fair value measurement of assets [table] Disclosure of fair value measurement of assets [line items] Increase (decrease) in fair value measurement, assets (Decrease) / increase Purchases, fair value measurement, assets Increase due to business combinations Currency translation adjustment and others fair value measurement assets Currency translation adjustment and others The increase (decrease) in the fair value measurement of assets resulting from currency translation adjustments and others. Disclosure of operating segments [table] Segment consolidation items [axis] Entity's total for segment consolidation items [member] Elimination of intersegment amounts [member] LUXEMBOURG Argentina Types of customers [axis] Types of customers [member] Government customers [member] Disclosure of operating segments [line items] ifrs-full_NoncurrentFinancialAssetsAvailableforsale Non-current financial assets available-for-sale ifrs-full_PercentageOfEntitysRevenue Percentage of entity's revenue Contract liabilities ifrs-full_ContractLiabilities Segments [axis] Segments [member] Tubes [member] Segment classified as "Tubes". All other segments [member] Reportable segments [member] Continuing and discontinued operations [axis] Continuing operations [member] Discontinued operations [member] Operating income under management view. Management view operating income Management view - operating income (loss) Differences in cost of sales under management view. Management view differences in cost of sales Difference in cost of sales Differences in depreciation and amortization Management view differences in depreciation and amortization Differences in depreciation and amortization under management view. Differences in selling, general and administrative expenses under management view. Differences in selling, general and administrative expenses Management view differences in selling general and administrative expenses Differences in other operating income (expenses), net Management view differences in other operating income expenses net Differences in net other operating income (expenses) under management view. Net financial results ifrs-full_FinanceIncomeCost Financial income (expense), net Depreciation and amortization Depreciation and amortization North America [Member] South America [Member] Europe [Member] European Middle East and Africa [member] Regions of the Middle East and Africa. Asia Pacific [Member] Unallocated [member] Represents an unallocated region. Unallocated region [member] Products and services [axis] Products and services [member] Oil and gas [member] Represents information pertaining to oil and gas. Hydrocarbon processing and power generation [member] Represents information pertaining to hydrocarbon processing and power generation. Represents information pertaining to industrial and other. Industrial and other [member] Inventories at the beginning of the year Inventories including discontinued operations Less: Inventories at the end of the year The amount of current inventories including discontinued operations. Increase in inventory due to business combinations Represents the amount of increase in inventory during the period due to business combinations. The amount of decrease in inventory during the period due to sale of subsidiaries. Decrease in inventory due to sale of subsidiaries Decrease in inventory due to sale of subsidiaries Expenses by nature [abstract] Plus: Charges of the year Raw materials, energy, consumables and other Cost of sales raw materials energy consumables and other Amount of raw materials, energy, consumables and other expense attributable to cost of sales. Cost of sales services and fees Amount of services and fees expense attributable to cost of sales. Services and fees Labor cost Cost of sales labor cost Amount of labor cost attributable to cost of sales. Depreciation of property, plant and equipment Cost of sales depreciation of property plant and equipment Amount of depreciation of property, plant and equipment attributable to cost of sales. Amortization of intangible assets Cost of sales amortization of intangible assets Amount of amortization of intangible assets attributable to cost of sales. Depreciation of right-of-use assets Depreciation of right of use assets inventory impact on cost of sales Represents the cost of sales impact of depreciation of right-of-use assets during the period. Maintenance expenses Cost of sales maintenance expenses Amount of maintenance expenses attributable to cost of sales. Allowance for obsolescence Cost of sales allowance for obsolescence Amount of allowance for obsolescence attributable to cost of sales. Taxes Cost of sales taxes Amount of tax expense attributable to cost of sales. Other Cost of sales other Amount of other expense attributable to cost of sales. Cost of sales including discontinued operations Cost of sales including discontinued operations Amount of cost of sales including discontinued operations. Cost of sales discontinued operations From discontinued operations Amount of expense attributable to cost of sales from discontinued operations. Cost of sales, labor cost severance charges Amount of labor cost severance charges attributable to cost of sales. Cost of sales labor cost severance charges Selling general and administrative expenses services and fees Services and fees Amount of services and fees attributable to selling, general and administrative expenses. Selling general and administrative expenses labor cost Labor cost Amount of labor cost attributable to selling, general and administrative expenses. Selling general and administrative expenses depreciation of property plant and equipment Amount of depreciation of property, plant and equipment attributable to selling, general and administrative expenses. Depreciation of property, plant and equipment Amount of amortization of depreciation of right-of-use assets attributable to selling, general and administrative expenses. Selling general and administrative expenses depreciation of right of use assets Depreciation of right-of-use assets Selling general and administrative expenses commissions freight and other selling expenses Commissions, freight and other selling expenses Amount of commissions, freight and other selling expenses attributable to selling, general and administrative expenses. Selling general and administrative expenses provisions for contingencies Provisions for contingencies Amount of provisions for contingencies attributable to selling, general and administrative expenses. Allowances for doubtful accounts Amount of allowances for doubtful accounts attributable to selling, general and administrative expenses. Selling general and administrative expenses allowances for doubtful accounts Selling general and administrative expenses taxes Taxes Amount of taxes attributable to selling, general and administrative expenses. Selling general and administrative expenses other Other Amount of other expenses attributable to selling, general and administrative expenses. Selling, general and administrative expenses, labor cost severance charges Selling general and administrative expenses labor cost severance charges Amount of labor cost severance charges attributable to selling, general and administrative expenses. ifrs-full_ShorttermEmployeeBenefitsExpense Wages, salaries and social security costs Severance indemnities Defined contribution plans ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans Pension benefits - defined benefit plans Employee retention and long-term incentive program Employee retention and long term incentive program expenses (income) The amount of expense in relation to employee retention and long-term incentive program expenses (income). Total employee benefits expense ifrs-full_EmployeeBenefitsExpense Total employee benefits expense Disclosure of geographical areas [table] Mexico Brazil Romania Colombia Indonesia Japan Geographical areas not otherwise defined. Other Disclosure of geographical areas [line items] ifrs-full_NumberOfEmployees Number of employees Disclosure of impairment loss recognised or reversed for cash-generating unit [table] NKKTUBES [member] The entity NKKTUBES. Individual assets or cash-generating units [axis] Entity's total for individual assets or cash-generating units [member] IPSCO [Member] The cash generating unit IPSCO. Coiled Tubing [member] The cash generating unit Coiled Tubing. Rods USA [Member] The cash generating unit Rods (USA). Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] The growth rate used in the current estimate of the present value of the future cash flows expected to be derived from an asset or cash-generating unit. Growth rates used in current estimate of value in use Growth rate used in current estimate of value in use The carrying amount after impairment. Carrying amount after impairment Carrying amount after impairment Investments in joint ventures accounted for using equity method Carrying amounts after the recognition of impairment charges Investment in joint venture Percentage of reasonably possible increase (decrease) in key assumption resulting additional impairment The reasonably possible percentage of the increase (decrease) in the key assumption resulting additional impairment. Percentage of reasonably possible increase (decrease) in key assumption resulting additional impairment Disclosure of detailed information about other operating income and expenses [table] Schedule reflecting each material business divestitures completed during the period, including background, timing, and recognized assets and liabilities. Subsidiaries [member] Subsidiaries Business divestitures [axis] Information by business divestitures. Entity's total for business divestitures [member] Identification of the acquiree in a material business divestitures, which may include the name or other type of identification of the acquiree. Geneva Structural Tubes Llc [Member] Geneva Structural Tubes LLC (“Geneva”) This member stands for the information pertaining to Geneva Structural Tubes LLC (“Geneva”), a acquiree in a material business divestitures. Business divestitures, acquirer [axis] Information by business divestitures, acquirer name or other type of identification of the acquirer. Entity's total for business divestitures, acquirer [domain] Identification of the acquirer in a material business divestitures, which may include the name or other type of identification of the acquirer. Mkk Usa Inc [Member] MKK USA Inc This member stands for the information pertaining to MKK USA Inc, a acquirer in a material business divestiture. Disclosure of detailed information about other operating income and expenses [line items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. The amount of tax expense (credit) from Program of Social Integration (“PIS”) and Contribution for Financing of Social Security (“COFINS”) during the reporting period. Tax expense (credit) from PIS and COFINS Tax expense credit from program of social integration and contribution for financing of social security Tax credit from PIS and COFINS recognized in other operating income The amount of tax credit from Program of Social Integration (“PIS”) and Contribution for Financing of Social Security (“COFINS”) recognized in other operating income during the reporting period. Tax recovery in Brazilian subsidiaries Tax credit from program of social integration and contribution for financing of social security other operating income Non-financial interest related to PIS and COFINS taxes recovery in Brazilian subsidiaries Interest income on tax assets Tax credit from PIS and COFINS recognized in financial results The amount of interest income on tax assets during the reporting period. The amount of tax expense on gain from tax claims of Program of Social Integration (“PIS”) and Contribution for Financing of Social Security (“COFINS”) during the reporting period. Tax expense on gain from tax claims of Program of Social Integration and Contribution for Financing of Social Security Tax charge related to gain from tax claims of PIS and COFINS The percentage of the voting equity interests divested in a business divestiture. Percentage of voting equity interests divested Percentage of voting equity interests divested Consideration paid (received) Aggregate selling price of subsidiary Gains (losses) recognised when control of subsidiary is lost Gain on sale of subsidiaries Other operating income: Net income from other sales Other operating income net income from other sales Amount of other operating income attributable to net income from other sales. Rental income Net rents Other ifrs-full_MiscellaneousOtherOperatingIncome Amount of other operating income attributable to recovery on allowance for doubtful accounts. Recovery on allowance for doubtful receivables Other operating income recovery on allowance for doubtful accounts Other operating expenses: Contributions to welfare projects and non-profits organizations Other operating expense contributions to welfare projects and nonprofits organizations Amount of other operating expense attributable to contributions to welfare projects and non-profits organizations. Allowance for doubtful receivables Other operating expenses allowance for doubtful receivables Amount of other operating expenses attributable to allowance for doubtful receivables. Interest related to instruments carried at FVPL Interest income on financial assets designated at fair value through profit or loss Interest Income Net financial income on changes in FV of financial assets at FVTPL Represents the net financial income on changes in fair value of financial assets at fair value through profit os loss. Net result on changes in FV of financial assets at FVPL Impairment result on financial assets at FVTOCI Impairment loss on financial assets Foreign exchange gain (loss) Net foreign exchange transactions results Foreign exchange derivatives contracts results The amount of income or cost associated with foreign exchange derivatives contracts. Other finance cost Other Argentina And Mexico [Member] Argentina and Mexico This member stands for the information pertaining to "Argentina and Mexico", a geographical region of the reporting entity. Applicable tax rate Corporate income tax rate After tax effect of expense not deductible in determining profit loss After tax effect of expense not deductible in determining profit (loss) The amount represents the difference between the after tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to expenses not deductible in determining profit (loss). Charge related to withholding taxes for intra group international operations Represents the amount of charge related to withholding taxes for intra group international operations during the period. Charge related to withholding taxes for intra group international operations Disclosure of income tax [line items] Current tax Current tax Deferred tax Deferred tax Income before income tax without impairment charges The profit (loss) before impairment loss or reversal of impairment loss recognised and income tax expense or income. Profit (loss) before impairment loss reversal of impairment loss recognised and income tax Tax calculated at the tax rate in each country Changes in the tax rates Utilization of previously unrecognized tax losses Tax revaluation, withholding tax and others Tax effect of revenues exempt from taxation and expense not deductible in determining taxable profit tax loss Represents the amount of difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to revenues that are exempt from taxation and to expenses not deductible in determining taxable profit (tax loss). ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare Dividends recognised as distributions to owners per share (in dollars per share) Dividends paid, per American Depositary Security (in dollars per share) Dividends payable amount per american depositary security The amount of a dividend declared or approved, but not yet paid (Dividends payable) per American Depositary Security (ADS). Each ADS equals two shares. Dividends payable, amount per ads (in dollars per share) The amount of dividends approved by Board of Directors. Payments for dividends approved Payments for dividends approved The amount of dividends paid per share including interim dividend. Dividends paid, amount per share including interim dividend (in dollars per share) Dividends paid amount per share including interim dividend Dividends payable amount per share including interim dividend Dividends payable, amount per share including interim dividend (in dollars per share) The per share amount of a dividend payable including an interim dividend previously paid. Dividends paid, amount per ADS including interim dividend (in dollars per share) The amount of dividends paid, amount per ADS including interim dividend. Dividends paid amount per american depositary security including interim dividend The amount of a dividend payable including an interim dividend paid previously per American Depositary Security (ADS). Each ADS equals two shares. Dividends payable, amount per ADS including interim dividend (in dollars per share) Dividends payable amount per american depositary security including interim dividend Dividends paid, ordinary shares per share (in dollars per share) ifrs-full_DividendsPaidOrdinarySharesPerShare Dividends paid, ordinary shares per share (in dollars per share) Dividends paid per american depositary security Dividends paid, per ADS (in dollars per share) The amount of dividends paid per American Depositary Security ("ADS"). Each ADS equals two shares. The amount of property plant and equipment capitalized interest. Property, plant and equipment, capitalized interest Property plant and equipment capitalized interest Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Carrying amount [member] Gross carrying amount [member] Accumulated depreciation, amortisation and impairment [member] Land and civil buildings [member] Refers to information regarding land and civil buildings. Industrial buildings, plant and production equipment [member] Refers to information regarding the industrial buildings, plant and production equipment. Vehicles, furniture and fixtures [member] This member stands for a class of property, plant and equipment representing vehicles and furniture and fixtures used in the entity's operations. Construction in progress [member] Work in progress [member] Spare parts and equipment [member] This member stands for a class of property, plant and equipment representing spare parts and equipment used in the entity's operations. Reconciliation of changes in property, plant and equipment [abstract] ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment Currency translation adjustment Increase due to business combinations ifrs-full_AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment Additions ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment ifrs-full_DisposalsAndRetirementsPropertyPlantAndEquipment Disposals / Consumptions Impairment loss recognised in profit or loss, property, plant and equipment Impairment charge (See note 5) Transfers / Reclassifications ifrs-full_IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment Decrease through loss of control of subsidiary, property, plant and equipment Decrease due to sale of subsidiaries Depreciation charge ifrs-full_DepreciationPropertyPlantAndEquipment Disclosure of reconciliation of changes in goodwill [table] Disclosure of reconciliation of changes in goodwill [line items] Goodwill Goodwill at end of period Disclosure of reconciliation of changes in intangible assets and goodwill [table] Licenses, patents and trademarks [member] Intangible assets classified as licenses, patents and trademarks. Goodwill [member] Disclosure of reconciliation of changes in intangible assets and goodwill [line items] Reconciliation of changes in intangible assets and goodwill [abstract] Currency translation adjustment ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill Translation differences ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill Increase due to business combinations ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill Additions ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill Amortization charge Impairment loss recognised in profit or loss, intangible assets and goodwill Impairment charge ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesIntangibleAssetsAndGoodwill Transfers / Reclassifications ifrs-full_DisposalsIntangibleAssetsAndGoodwill Disposals Disclosure of information for cash-generating units [table] Other business combinations [Member] This member stands for the information pertaining to "other business combinations", which an acquirer obtains control of one or more businesses. Other acquisition [member] Tamsa (Hydril and other) [member] The cash generating unit Tamsa (Hydril and other). Siderca (Hydril and other) [member] The cash generating unit Siderca (Hydril and other). Hydril [member] The cash generating unit Hydril. Other CGU [member] The cash generating unit classified as other. Disclosure of information for cash-generating units [line items] Disclosure of maturity analysis of operating lease payments [table] Maturity [axis] Aggregated time bands [member] Not later than one year [member] Later than one year and not later than five years [member] Later than five years [member] Disclosure of maturity analysis of operating lease payments [line items] Remaining lease payments to be made percentage Remaining lease payments to be made, percentage Percentage of total remaining payments to be made. Reconciliation of changes in right of use assets [abstract] Currency translation adjustment Increase decrease through net exchange differences right of use assets The increase (decrease) in right-of-use assets resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. ifrs-full_DepreciationRightofuseAssets Depreciation charge Increase due to business combinations Acquisitions through business combinations right of use assets The increase (decrease) in right-of-use assets resulting from acquisitions through business combinations. Additions to right-of-use assets Additions Transfers / Reclassifications Increase decrease through transfers reclassifications and other changes right of use assets The increase (decrease) in right-of-use assets resulting from transfers, reclassifications and other changes. Disposals consumptions right of use assets Disposals The decrease in right-of-use assets resulting from disposals and consumptions. ts_RightofuseAssetsAccumulatedDepreciation Accumulated at the beginning of the year Accumulated at the end of the year Represents the amount of accumulated depreciation for right-of-use assets. ts_RightofuseAssetsCost Opening net book amount Closing net book amount Represents the cost of right-of-use assets as of the specified date. Lease liabilities increase due to business combinations Increase due to business combinations Represents the increase in lease liabilities during the period due to business combinations. Lease liabilities translation differences Translation differences Represents the impact of translation differences on lease liabilities during the period. Lease liabilities additions Additions Represents the amount of additions to lease liabilities during the period. Represents the change in lease liabilities during the period attributable to cancellations. Cancellations Lease liabilities cancellations Lease liabilities repayments Repayments Represents the change in lease liabilities during the period from repayments. Lease liabilities interest accrued Interest accrued Represents the change in lease liabilities during the period attributable to interest accrued. Disclosure of unconsolidated structured entities [table] Ternium and Usiminas [member] Related to Ternium and Usiminas. Categories of related parties [axis] Entity's total for related parties [member] Borrowings by name [axis] Borrowings by name [member] Several banks, to refinance obligations [member] Related to several banks borrowings, used to refinance obligations. Disclosure of unconsolidated structured entities [line items] Closing price per american depositary security Closing price, per ads (in dollars per share) The amount of a closing price per American Depositary Security (ADS) as quoted on the New York Stock Exchange. Each ADS equals two shares. ifrs-full_FairValueOfInvestmentsInAssociatesWherePriceQuotationsPublished Fair value of investments in associates for which there are quoted market prices Closing price per share Closing price, per share (in BRL per share) Represents the quoted closing price per share of stock. Transportation capacity agreement, purchasing capacity of natural gas per day Represents the amount of purchasing capacity of MMBtu/Gas per day under a transportation capacity agreement. Transportation capacity agreement purchasing capacity of natural gas per day Exposure to transportation capacity agreements Exposure to transportation capacity agreements Represents the amount of exposure risk from transportation capacity agreements. Represents the amount of exposure related to contracts for the purchase of power generation equipment and other services related to the equipment. Exposure to purchase and other service agreements Exposure to purchase and other service agreements Exposure to the purchase of clean energy certificates Exposure to the purchase of clean energy certificates The amount of exposure to the purchase of clean energy certificates. Proceeds from repayments of loans receivable from related parties Proceeds From (Repayments of Loans) Receivable From Related Parties The amount of proceeds from (repayments of loans) receivable from related parties. ifrs-full_LoansAndReceivables Loans and receivables ifrs-full_DebtSecurities Debt instruments issued Proportion of corporate guarantee covering obligations Proportion of corporate guarantee covering obligations Represents the proportion of a corporate guarantee that covers obligations made under a syndicated loan agreement. Debt service coverage ratio covered percent Debt service coverage ratio, covered, percent The percent amount of covered debt service coverage ratio. Letters of credit covered Letters of credit, covered The amount of covered letters of credit. Represents the amount of a corporate guarantee that covers obligations made under a loan agreement. Amount of exposure under the corporate guarantees Corporate guarantee covering obligations Reconciliation of changes in investments in subsidiaries joint ventures and associates [abstract] The amount of income (loss) from equity method investments in non-consolidated companies. Income loss from equity method investments in nonconsolidated companies Equity in earnings of non-consolidated companies Investments in subsidiaries joint ventures and associates increase due to business combinations Increase due to business combinations Represents the increase in investments in subsidiaries, joint ventures and associates during the period due to business combinations. Represents the amount of divdends declared by nonconsolidated companies. Dividends and distributions declared Dividends declared by nonconsolidated companies Increase in equity reserves and others The entity's share of the other comprehensive income of associates and joint ventures accounted for using the equity method, including dividends declared, net of tax. Share of other comprehensive income of associates and joint ventures accounted for using equity method Including dividends declared net of tax Other [member] Information related to other non-consolidated companies. SAUDI ARABIA Employee advances and loans Noncurrent receivables employee advances and loans The amount of non-current receivables from employee advances and loans. ifrs-full_NoncurrentReceivablesFromTaxesOtherThanIncomeTax Tax credits Receivables from related parties ifrs-full_NoncurrentReceivablesDueFromRelatedParties Advances to suppliers and other advances Noncurrent receivables advances to suppliers and other advances The amount of non-current receivables from advances to suppliers and other advances. The amount of non-current receivables from interest in Venezuelan companies. Receivable Venezuelan subsidiaries Noncurrent receivables from interest in venezuelan companies Others ifrs-full_OtherNoncurrentReceivables Finished goods Goods in process Raw materials Supplies Goods in transit Inventories gross Inventories, Gross Amount of inventories before allowance for obsolescence. The amount of the allowance for obsolescence for inventories. Allowance for obsolescence, see note 24 (i) Inventories allowance for obsolescence Prepaid expenses and other receivables The amount of prepaid expenses and other receivables attributable to current receivables and prepayments. Current receivables and prepayments prepaid expenses and other receivables The amount of government entities attributable to current receivables and prepayments. Government entities Current receivables and prepayments government entities Employee advances and loans The amount of employee advances and loans that are attributable to current receivables and prepayments. Current receivables and prepayments employee advances and loans Advances to suppliers and other advances The amount of advances to suppliers and other advances that are attributable to current receivables and prepayments. Current receivables and prepayments advances to suppliers and other advances Current receivables from taxes other than income tax Government tax refunds on exports Receivables from related parties Current receivables and prepayments receivables from related parties The amount of current receivables from related parties that are attributable to receivables and prepayments. Others Other current receivables Current receivables and prepayments gross The gross amount of current receivables and prepayments. Receivables and prepayments, gross Represents a valuation allowance for other doubtful accounts due to an Entity within one year (or one operating cycle if longer) that are expected to be uncollectible. Allowance for other doubtful accounts, see note 24 (i) Current allowance for other doubtful accounts Income tax assets Current income tax assets The amount of current income tax assets. V.A.T. credits Current prepaid taxes Represents the amount of current prepaid taxes. Other prepaid taxes Income tax liabilities Current income tax liabilities The amount of current income tax liabilities. V.A.T. liabilities Other taxes Current other tax liabilities Represents the amount of current other tax liabilities. Current accounts Current trade receivables current accounts Represents the amount of current accounts attributable to current trade receivables. Receivables from related parties Current trade receivables, gross Current trade receivables gross Guaranteed and not guaranteed The gross amount of current trade receivables. Allowance for doubtful accounts, see note 24 (i) Current trade receivables allowance for doubtful accounts Represents a valuation allowance for trade receivables due to an Entity within one year (or one operating cycle if longer) that are expected to be uncollectible. Statement Table [Table] Disclosure of financial assets that are either past due or impaired [table] Current trade receivables, not due [member] Information related to current trade receivables that currently not due. Current trade receivables, past due, less than 180 days [member] Information about current trade receivables that are less than 180 days past due. Current trade receivables, past due, greater than 180 days [member] Information related to current trade receivables that are greater than 180 days past due. Disclosure of financial assets that are either past due or impaired [line items] Guaranteed Current trade receivables guaranteed Represents the amount current trade receivables that are guaranteed. Not guaranteed Current trade receivables not guaranteed Represents the amount of current trade receivables that are not guaranteed. Expected loss rate Current trade receivables expected loss rate The expected loss rate of current trade receivables. The amount of allowance for doubtful accounts, net of nominative allowances. Allowances for doubtful accounts Allowance for doubtful accounts net of nominative allowances The amount of nominative allowances for doubtful accounts from current trade receivables. Current trade receivables nominative allowances for doubtful accounts Nominative allowances for doubtful accounts Cash at banks Liquidity funds Short-term investments Other investments current [abstract] Other investments - current Other investments current fixed income Fixed income (time-deposit, zero coupon bonds, commercial papers) The amount of fixed income current investments which may include but not limited to time-deposit, zero coupon bonds, commercial papers. The amount of bonds and other fixed income current investments. Bonds and other fixed income Other investments current bonds and other fixed income Other investments noncurrent [abstract] Other investments - non-current The amount of bonds and other fixed income non-current investments. Bonds and other fixed income Other investments noncurrent bonds and other fixed income Others' with proposed documentation "The amount of other non-current investments. Others Other investments noncurrent others Disclosure of detailed information about borrowings [table] Bank borrowings [member] Represents bank borrowings. Bank overdrafts [member] Represents bank overdrafts. Finance lease liabilities [member] Represents finance lease liabilities. Disclosure of detailed information about borrowings [line items] Non-current borrowings before costs of issue of debt Total borrowings The amount of non-current borrowings before the costs of issue of debt. Noncurrent costs of issue of debt Non-current costs of issue of debt The amount of costs of issue of debt classified as non-current. Current borrowings before costs of issue of debt The amount of current borrowings before the costs of issue of debt. Current costs of issue of debt Current costs of issue of debt The amount of costs of issue of debt classified as current. Other borrowings [member] Represents other borrowings. Later than one year and not later than two years [member] Later than two years and not later than three years [member] Later than three years and not later than four years [member] Later than four years and not later than five years [member] Interest to be accrued (*) Borrowings including interest to be accrued Total The amount of borrowings including interest to be accrued. Significant borrowings as of closing date [member] Refers to information regarding significant borrowings as of closing date. Significant borrowings one, as of closing date [member] This member stands for the information pertaining to "Significant borrowings one, as of closing date". Significant borrowings one, as of closing date [member] Significant borrowings two, as of closing date [member] This member stands for the information pertaining to "Significant borrowings two, as of closing date". Significant borrowings two, as of closing date [member] Maverick Tube Corporation and Subsidiaries One [Member] The entity MAVERICK TUBE CORPORATION and subsidiaries, One. Maverick Tube Corporation and Subsidiaries Two [Member] The entity MAVERICK TUBE CORPORATION and subsidiaries, Two. Tamsa Hydril and Other One [Member] The cash generating unit Tamsa (Hydril and other), One. Tamsa Hydril and Other Two [Member] The cash generating unit Tamsa (Hydril and other), Two. Tamsa Hydril and Other Three [Member] The cash generating unit Tamsa (Hydril and other), Three. SIDERCA S.A.I.C. and subsidiaries [member] The entity SIDERCA S.A.I.C. and subsidiaries. Tamsa [Member] This member stands for the information pertaining to "Tamsa". Tamsa Weighted average [member] Total borrowings, weighted average interest rates Saudi Arabia, Riyals Euro Member Countries, Euro Mexico, Pesos Argentina, Pesos Other currency [member] Represents currencies not otherwise specified. Translation differences, noncurrent The increase (decrease) in the non-current portion of non-current borrowings resulting from translation differences. Effect of translation differences on long term borrowings The increase (decrease) in the current borrowings and current portion of non-current borrowings resulting from translation differences. Effect of translation differences on current borrowings and current portion of noncurrent borrowings Translation differences, current Proceeds and repayments, net, noncurrent The increase (decrease) in the non-current portion of non-current borrowings resulting from net proceeds and repayments. Effect of net proceeds and repayments on long term borrowings Effect of net proceeds and repayments on current borrowings and current portion of noncurrent borrowings The increase (decrease) in the total current borrowings and current portion of non-current borrowings resulting from net proceeds and repayments. Proceeds and repayments, net, current Interests accrued less payments, noncurrent Effect of interests accrued net of payments on long term borrowings The increase (decrease) in the non-current portion of non-current borrowings resulting from interests accrued net of payments. Effect of interests accrued net of payments on current borrowings and current portion of noncurrent borrowings Interests accrued less payments, current The increase (decrease) in the non-current portion of non-current borrowings resulting from interests accrued net of payments. Reclassifications, noncurrent The increase (decrease) in the non-current portion of non-current borrowings resulting from reclassifications. Effect of reclassifications on long term borrowings Reclassifications, current Effect of reclassifications on current borrowings and current portion of noncurrent borrowings The increase (decrease) in the total current borrowings and current portion of non-current borrowings resulting from reclassifications. Represents the effect of business combinations on long-term borrowings. Increase due to business combinations, noncurrent Effect of business combinations on long term borrowings Represents the effect of business combinations on current borrowing borrowings and the current portion of non-current borrowings. Increase due to business combinations, current Effect of business combinations on current borrowings and current portion of noncurrent borrowings The increase (decrease) in the non-current portion of non-current borrowings resulting from overdrafts variation. Effect of overdrafts variation on long term borrowings Overdrafts variation, noncurrent Effect of overdrafts variation on current borrowings and current portion of noncurrent borrowings Overdrafts variation, current The increase (decrease) in the current borrowings and current portion of non-current borrowings resulting from overdrafts variation. Disclosure of temporary difference, unused tax losses and unused tax credits [table] Disclosure of temporary difference, unused tax losses and unused tax credits [line items] Represents the amount of deferred tax assets related to taxable losses of the entity's subsidiaries. Deferred tax assets related to taxable losses of subsidiaries Deferred tax assets related to taxable losses of subsidiaries Represents the percentage of recognized tax losses expected to expire within one year. Recognized tax losses expiring within one year, percentage Recognized tax losses expiring within one year percentage Represents the percentage of recognized tax losses expected to expire in two to five years. Recognized tax losses expiring in two to five years, percentage Recognized tax losses expiring in two to five years percentage Represents the percentage of recognized tax losses expected to expire in more than five years. Recognized tax losses expiring in more than five years, percentage Recognized tax losses expiring in more than five years percentage ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised Unused tax losses for which no deferred tax asset recognised Regarding the unused tax losses for which no deferred tax asset is recognized in the statement of financial position, this element represents the percentage expiring in less than one year. Unused tax losses for which no deferred tax asset recognised, percent expiring in less than one year Unused tax losses for which no deferred tax asset recognised percent expiring in less than one year Regarding the unused tax losses for which no deferred tax asset is recognized in the statement of financial position, this element represents the percentage expiring in two to five years. Unused tax losses for which no deferred tax asset recognised, percent expiring between two and five years Unused tax losses for which no deferred tax asset recognised percent expiring between two and five years Regarding the unused tax losses for which no deferred tax asset is recognized in the statement of financial position, this element represents the percentage expiring in more than five years. Unused tax losses for which no deferred tax asset recognised, percent expiring in more than five years Unused tax losses for which no deferred tax asset recognised percent expiring in more than five years Deferred tax liabilities, fixed assets [member] This member stands for deferred tax liability attributable to taxable temporary differences from fixed assets. Deferred tax liabilities, inventory [member] This member stands for deferred tax consequences attributable to taxable temporary differences derived from inventory. Deferred tax liabilities, intangible assets and other [member] This member stands for deferred tax liability attributable to taxable temporary differences from intangible assets and other assets. This member stands for deferred tax liabilities. Deferred Tax liabilities [member] Deferred tax assets, provisions and allowances [member] This member stands for deferred tax asset attributable to deductible temporary differences from provisions and allowances. Deferred tax assets, inventory [member] This member stands for deferred tax asset attributable to deductible temporary differences from inventory. Deferred tax assets, tax loss [member] This member stands for deferred tax asset attributable to deductible temporary differences from tax loss. Deferred tax assets, other [member] This member stands for deferred tax asset attributable to deductible temporary differences, classified as other. Deferred tax assets [member] This member stands for deferred tax assets. ifrs-full_DeferredTaxLiabilityAsset Net deferred tax liability (asset) At the beginning of the year At the end of the year Translation differences ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset Increase (decrease) through loss of control of subsidiary, deferred tax liability (asset) Decrease due to sale of subsidiaries Increase due to business combinations ifrs-full_IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset Increase due to business combinations Charged directly to other comprehensive income Charged to other comprehensive income Income statement charge / (credit) Effect of adoption of new standards Effect of adoption of new standards The amount of increase (decrease) in deferred tax assets due to adoption of new accounting standards. Deferred tax asset increase decrease due to adoption of new accounting standards The amount of increase (decrease) in deferred tax assets due to the adoption of new accounting standards. Effect of adoption of new standards Later than one year [member] Reconciliation of changes in deferred tax liability (asset) [abstract] Disclosure of defined benefit plans [table] Post-employment benefits Pension defined benefit plans [member] Funding arrangements of defined benefit plans [axis] Funding arrangements of defined benefit plans [member] Wholly unfunded defined benefit plans [member] Unfunded Wholly or partly funded defined benefit plans [member] Funded Actuarial assumptions [axis] Actuarial assumptions [member] Actuarial assumption of discount rates [member] Actuarial assumption of expected rates of salary increases [member] Disclosure of defined benefit plans [line items] ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset Actuarial losses (gains) arising from changes in demographic assumptions, net defined benefit liability (asset) ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset Actuarial losses (gains) arising from changes in financial assumptions, net defined benefit liability (asset) ifrs-full_PercentageOfReasonablyPossibleIncreaseInActuarialAssumption Percentage of reasonably possible increase in actuarial assumption ifrs-full_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption ifrs-full_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption Defined benefit plan in which retirement benefits are payable directly from plan assets segregated and restricted to provide such benefits and for which plan assets exceed benefit obligation of plan designed to provide retirement benefits. Overfunded Plan Overfunded plan ifrs-full_EstimateOfContributionsExpectedToBePaidToPlan Estimate of contributions expected to be paid to plan for next annual reporting period Post-employment benefits The amount of non-current post-employment benefits. Noncurrent post employment benefits Other long-term benefits Other noncurrent benefits The amount of other non-current benefits. The amount of other non-current miscellaneous liabilities. Other noncurrent miscellaneous liabilities Miscellaneous Current service cost ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset Interest cost Interest accrued ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset The decrease (increase) in the net defined benefit liability (asset) resulting from curtailments and settlements. Curtailments and settlements Gains (losses) arising from curtailments and settlements, net defined benefit liability asset ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset Remeasurements ifrs-full_IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset Translation differences Translation differences ifrs-full_IncreaseDecreaseThroughBusinessCombinationsAndDisposalsNetDefinedBenefitLiabilityAsset Increase due to business combinations Benefits paid Benefits paid from the plan Benefits paid Reclassified to current liabilities The decrease (increase) in a net defined benefit liability (asset) resulting from reclassified to current liabilities. Decrease (increase) in net defined benefit liability (asset) resulting from reclassified to current liabilities ifrs-full_IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset Other ifrs-full_DefinedBenefitObligationAtPresentValue Present value of funded obligations ifrs-full_PlanAssetsAtFairValue Fair value of plan assets ifrs-full_SurplusDeficitInPlan Asset Discount rate Rate of compensation increase Fair value of funded post-employment benefits [member] This member stands for the fair value of funded post-employment benefits. ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset Return on plan assets ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset Remeasurements ifrs-full_ContributionsToPlanNetDefinedBenefitLiabilityAsset Contributions paid to the plan Equity instruments Equity instruments percent contributed to fair value of plan assets The percent that instruments representing equity (rather than debt) constitute of the fair value of defined benefit plan assets. Debt instruments Debt instruments percent contributed to fair value of plan assets The percent that instruments representing debt (rather than equity) constitute of the fair value of defined benefit plan assets. The percent that other types of assets not separately disclosed constitute of the fair value of defined benefit plan assets. Others Other assets percent contributed to fair value of plan assets The amount of current employee related liabilities. Current employee related liabilities Payroll and social security payable The amount of other current miscellaneous liabilities. Other current miscellaneous liabilities Miscellaneous Disclosure of other provisions [table] Provision for non-current liabilities [member] Represents the provision for non-current liabilities. Disclosure of other provisions [line items] Reconciliation of changes in other provisions [abstract] Values at the beginning of the year Values at the end of the year ifrs-full_OtherProvisions Total other provisions Values at the beginning of the year Values at the end of the year Translation differences Translation differences ifrs-full_AcquisitionsThroughBusinessCombinationsOtherProvisions Increase due to business combinations Increase due to business combinations Additional provisions Reclassifications Used Used Allowance for other doubtful accounts - other receivables [member] Represents the allowance for other doubtful accounts attributable to other receivables. Allowance for inventory obsolescence [member] Represents the allowance for inventory obsolescence. Reconciliation of changes in allowance account for credit losses of financial assets [abstract] Values at the beginning of the year Values at the end of the year ifrs-full_AllowanceAccountForCreditLossesOfFinancialAssets Decrease due to sale of subsidiaries Decrease through loss of control of subsidiary, other provisions Decrease due to sale of subsidiaries The increase (decrease) through reversals and (additional) allowances. (Additional) / reversal allowances Increase decrease through reversals and additional allowances Increase decrease additional allowances other provisions (Additional) allowances The amount of increase (decrease) due to additional allowances, of other provisions. Used ifrs-full_UtilisationAllowanceAccountForCreditLossesOfFinancialAssets ts_IncreaseDecreaseDueToEffectOfAdoptionOfNewAccountingStandardsOtherProvisions Effect of adoption of new standards The amount of increase (decrease) due to the effect of adoption of new accounting standards, of other provisions. Sales risks [member] Represents the sales risks provision. Miscellaneous other provisions [member] Provision for current liabilities [member] Represents the provision for current liabilities. The amount of additional other provisions (reversals) made. Additional provisions Additional provisions other provisions reversals Disclosure of information about credit exposures designated as measured at fair value through profit or loss [table] Financial instruments measured at fair value through profit or loss because credit derivative is used to manage credit risk [axis] Financial instruments measured at fair value through profit or loss because credit derivative is used to manage credit risk [member] Derivatives hedging borrowings and investments [member] Related to derivatives used for hedging borrowings and investments. Other derivatives [member] Related to other derivatives. Disclosure of information about credit exposures designated as measured at fair value through profit or loss [line items] Fair value of derivatives The amount of financial assets (liabilities) classified as derivative instruments. Total Derivative financial assets liabilities Disclosure of detailed information about hedging instruments [table] Foreign exchange contract, purchase currency MXN, sell currency USD [member] Represents a foreign exchange contract where the purchase currency is MXN and the sell currency USD. Foreign exchange contract, purchase currency USD, sell currency MXN [member] Represents a foreign exchange contract where the purchase currency is USD and the sell currency MXN. Foreign exchange contract, purchase currency EUR, sell currency USD [member] Represents a foreign exchange contract where the purchase currency is EUR and the sell currency USD. Foreign exchange contract, purchase currency USD, sell currency EUR [member] Represents a foreign exchange contract where the purchase currency is USD and the sell currency EUR. Foreign exchange contract, purchase currency JPY, sell currency USD [member] Represents a foreign exchange contract where the purchase currency is JPY and the sell currency USD. Foreign exchange contract, purchase currency USD, sell currency BRL [member] Represents a foreign exchange contract where the purchase currency is USD and the sell currency BRL. Foreign exchange contract, purchase currency USD, sell currency KWD [member] Represents a foreign exchange contract where the purchase currency is USD and the sell currency KWD. Foreign exchange contract, purchase currency USD, sell currency CAD [member] Represents a foreign exchange contract where the purchase currency is USD and the sell currency CAD. Foreign exchange contract, purchase currency USD, sell currency GPB [member] Represents a foreign exchange contract where the purchase currency is USD and the sell currency GBP. Foreign exchange contract, purchase currency USD, sell currency CNY [member] Represents a foreign exchange contract where the purchase currency is USD and the sell currency CNY. Represents a foreign exchange contract where the purchase currency is BRL and the sell currency USD. Foreign exchange contract, purchase currency BRL, sell currency USD [member] Foreign exchange contract, Other [member] Represents a foreign exchange contract classified as other. Types of hedges [axis] Hedges [member] Cash flow hedges [member] Term, One [member] This member stands for a term, one. Term Two [Member] This member stands for a term, two. Disclosure of detailed information about hedging instruments [line items] Movements Disclosure of contingent liabilities [table] DALMINE S.p.A. [member] Information related to the entity DALMINE S.p.A. TENARIS BAY CITY, INC. [member] The entity TENARIS BAY CITY, INC. Items of contingent liabilities [axis] Items of contingent liabilities [member] Product Liability Litigation [Member] Product liability litigation This member stands for a component of product liability litigation. Classes of contingent liabilities [axis] Contingent liabilities [member] Legal proceedings contingent liability [member] Contingent liability for guarantees [member] Commitments and guarantees Tax contingent liability [member] Tax contingent liability related to fiscal years 2014 and 2015 [member] This member stands for the information pertaining to tax contingent liabilities related to fiscal years 2014 and 2015. Tax contingent liability related to fiscal years 2014 and 2015 [member] Tax contingent liability related to fiscal years 2014 and 2015, principal [member] This member stands for the information pertaining to principal portion of tax contingent liabilities related to fiscal years 2014 and 2015. Tax contingent liability related to fiscal years 2014 and 2015, principal [member] Tax contingent liability related to fiscal years 2014 and 2015, principal, interest and penalties [member] This member stands for the information pertaining to interest and penalties portion of tax contingent liabilities related to fiscal years 2014 and 2015. Tax contingent liability related to fiscal years 2014 and 2015, principal, interest and penalties [member] Tax contingent liability related to fiscal year 2014 [member] Represents information about a tax contingent liability related to the 2014 fiscal year. Tax contingent liability related to fiscal year 2014, principal [member] This member stands for the portion of a contingent liability, related to the 2014 fiscal year, for taxes attributable to principal. Tax contingent liability related to fiscal year 2014, interest and penalties [member] Represents the interest and penalties portion of tax contingent liabilities related to fiscal year 2014. Tax contingent liability related to fiscal year 2015 [member] Represents information about a tax contingent liability related to the 2015 fiscal year. Tax contingent liability related to fiscal year 2015, principal [member] This member stands for the portion of a contingent liability, related to the 2015 fiscal year, for taxes attributable to principal. Tax contingent liability related to fiscal year 2015, interest and penalties [member] Represents the interest and penalties portion of tax contingent liabilities related to fiscal year 2015. OCTG product [member] This member stands for the information pertaining to "OCTG product". OCTG product [member] Steel line pipe product [member] This member stands for the information pertaining to "Steel line pipe product". Steel line pipe product [member] Counterparty Name [Axis] Counterparty Name [Domain] Companhia Siderúrgica Nacional [member] The entity Companhia Siderúrgica Nacional. Tribunal de Contas da Uniao [member] Related to the Tribunal de Contas da Uniao. Transportadora de Gas del Norte S.A. [member] Refers to information regarding Transportadora de Gas del Norte S.A. Praxair S.A. [member] Refers to information regarding the company Praxair S.A. Graftech [member] Refers to information regarding the company Graftech. Vale International S.A. [member] Related to the entity Vale International S.A. Canadian National Railway [member] Related to the Canadian National Railway. Air Liquide Mexico S. de R.L. de C.V. [member] Related to a certain entity. Nucor Steel Memphis Inc. [member] Represents information related to Nucor Steel Memphis Inc. Ternium México S.A. de C.V. [member] This member stands for the information pertaining to "Ternium México S.A. de C.V.", a counterparty of the reporting entity. Ternium México S.A. de C.V. [member] Voestalpine Grobblech GmbH [member] This member stands for the information pertaining to "Voestalpine Grobblech GmbH", a counterparty of the reporting entity. Voestalpine Grobblech GmbH [member] Chubb [member] Related to the entity Chubb. Veracel Celulose S.A. [member] The entity Veracel Celulose S.A. Disclosure of contingent liabilities [line items] Contingencies, commitments and restrictions on the distribution of profits Tag-along tender offer to non-controlling interests, percentage Tagalong tender offer to noncontrolling interests percentage The required Tag-along tender offer to non-controlling interests in an acquisition expressed as a percentage of the price per share paid in such acquisition. Tagalong tender offer to noncontrolling interests Tag-along tender offer to non-controlling interests (in BRL per share) The required tag-along tender offer to non-controlling interests in an acquisition. Tagalong tender offer to noncontrolling interests shares Tag-along tender offer to non-controlling interests, shares (in shares) The required tag-along tender offer to non-controlling interests in an acquisition expressed in shares. Tag-along tender offer to non-controlling interests, contingent liability Tagalong tender offer to noncontrolling interests contingent liability The percentage of the tag-along tender offer to non-controlling interests accounted for as a contingent liability. The amount of payments made for settlements. Payments for settlement Payments for settlement The amount of liability associated with amount ordered to pay in a settlement. Settlement, amount ordered to pay Settlement amount ordered to pay The amount ordered to pay in a settlement, related to the insurance deductible. Settlement, amount ordered to pay, insurance deductible Settlement amount ordered to pay insurance deductible The amount of settlement ordered to be pay, related to damages. Settlement, amount ordered to pay, damages Settlement amount ordered to pay damages The reducable amount of alleged price overcharges on goods supplied under a supply contract. Alleged overprice that will be reduced amount Alleged overprice that will be reduced amount ifrs-full_EstimatedFinancialEffectOfContingentLiabilities Estimated financial effect of contingent liabilities Represents the amount of fine imposed, expressed as a percentage of the allegedly undue credits. Fine imposed, percentage of allegedly undue credits Fine imposed percentage of allegedly undue credits Term of supply contract Term of supply contract (Year) The term of a supply contract. Purchase commitments Purchase commitments The amount liable for purchase commitments. The percentage of purchase commitments to be made under purchase contract. Purchase commitments percentage to be made Purchase commitments percentage to be made Proportion of power generation capacity Proportion of power generation capacity Represents the proportion of power generation capacity. The percent of annual iron ore needs that will be supplied. Percent of annual iron ore needs supplied Percent of annual iron ore needs supplied The maximum number of metric tons of pellets supplied annually. Maximum number of tons of pellets supplied annually (Metric Ton) Maximum number of tons of pellets supplied annually Represents the amount of performance guarantees issued as of the specified date. Performance Guarantees Issued Performance guarantees issued Master distribution agreement term Master distribution agreement, term (Year) Represents the term of a master distribution agreement, wherein the acquirer is the exclusive distributor of products. Term of supply contract available extension Term of supply contract, available extension Represents the term of supply contract, available extension. The amount of expenses arising from penalties imposed. Penalties imposed Penalties imposed Dumping rate imposed The percentage of the dumping duty rate imposed. Dumping rate imposed Favourable percentage expected of duties and tariffs on import value of product The favourable percentage expected of duties and tariffs on import value of product under agreement. Favourable percentage expected of duties and tariffs on import value of product Renewable term of supply contract (Year) The renewable period of a supply contract term. Renewable term of supply contract The area of land held by the entity. Area of land (in square meters) Area of land 1 Percentage of ownership Proportion of ownership interest in subsidiary Proportion of ownership interest in subsidiary Land plots, carrying value Land Percentage of entitys net equity The percentage of the entity's net equity. Percentage of entity's net equity Inventories ifrs-full_AdjustmentsForDecreaseIncreaseInInventories Adjustments for increase decrease in receivables and prepayments and current tax assets Adjustments for increase (decrease) in receivables and prepayments and current tax assets to reconcile profit (loss) to net cash flow from (used in) operating activities. Receivables and prepayments and current tax assets Income statement (credit) / charge Trade receivables ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables Other liabilities ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities Customer advances ifrs-full_AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToCustomers Trade payables ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables Income tax accruals less payments Income tax accruals less payments [abstract] ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities Taxes paid Interest accruals less payments, net Interest accruals less payments net [abstract] The amount of interest accrued during the period. Interest accrued Interest accrued Interest received Adjustments for interest income Interest paid Interest paid ifrs-full_InterestPaidClassifiedAsOperatingActivities Disclosure of transactions between related parties [table] San Faustin S.A. [member] Represents San Faustin S.A. Key management personnel of entity or parent [member] Disclosure of transactions between related parties [line items] Percentage of the voting interest owned by the reporting entity (directly or indirectly). Percentage of ownership interest Proportion of ownership interest in associate ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits Key management personnel compensation, short-term employee benefits The number of units issued in a related party transaction. Units issued, related party transactions (in shares) Units issued related party transactions ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment Key management personnel compensation, share-based payment Associates [member] Other related parties [member] Sales of goods to related parties ifrs-full_RevenueFromSaleOfGoodsRelatedPartyTransactions Sales of services to related parties ifrs-full_RevenueFromRenderingOfServicesRelatedPartyTransactions The amount of revenue arising from related party transactions. Revenue related party transactions Revenue, related party transactions Purchases of goods to related parties ifrs-full_PurchasesOfGoodsRelatedPartyTransactions Purchases of services to related parties ifrs-full_PurchasesOfPropertyAndOtherAssetsRelatedPartyTransactions The amount of purchases of goods and services in related party transactions. Purchases of goods and services related party transactions Purchases of goods and services, related party transactions Receivables from non-consolidated parties ifrs-full_AmountsReceivableRelatedPartyTransactions ifrs-full_AmountsPayableRelatedPartyTransactions Payables to non-consolidated parties The amounts receivable (payable) resulting from related party transactions. Amounts receivable payable related party transactions Amounts receivable (payable), related party transactions Finance lease liabilities from non-consolidated parties Represents the amount of finance lease liabilities from non-consolidated parties as of the specified date. Finance lease liabilities from other related parties Finance lease liabilities from other related non-consolidated parties Represents the amount of finance lease liabilities from other related parties as of the specified date. Represents the amount of financial debt with related parties. Financial debt, related parties Financial debt related parties Audit fees The amount of fees paid or payable to the entity's auditors for other audit-related fees. Auditors remuneration for audit related fees Audit-related fees Tax fees All other fees ifrs-full_AuditorsRemuneration Total Disclosure of subsidiaries [table] HYDRIL COMPANY and subsidiaries [member] The entity HYDRIL COMPANY and subsidiaries. Technical Drilling & Production Services Nigeria. Ltd [member] The entity Technical Drilling & Production Services Nigeria. Ltd. Tenaris Supply Chain S.A. [member] The entity Tenaris Supply Chain S.A. Tubular Technical Services and Pipe Coaters [member] The entity Tubular Technical Services and Pipe Coaters. Amaja Tubular Services Limited [member] The entity Amaja Tubular Services Limited. Tubular Services Angola Lda. [member] Represents information regarding Tubular Services Angola Lda. Tenaris Baogang Baotou Steel Pipes Ltd [member] Represents information regarding Tenaris Baogang Baotou Steel Pipes Ltd. Disclosure of subsidiaries [line items] KAZAKHSTAN PORTUGAL NETHERLANDS URUGUAY UNITED KINGDOM SWITZERLAND ALGOMA TUBES INC. [member] The entity ALGOMA TUBES INC. IPSCO TUBULARS INC. and subsidiaries [member] The entity IPSCO TUBULARS INC. and subsidiaries. Kazakhstan Pipe Threaders Limited [member] Related to Kazakhstan Pipe Threaders Limited. MAVERICK TUBE CORPORATION and subsidiaries [member] The entity MAVERICK TUBE CORPORATION and subsidiaries. PT SEAMLESS PIPE INDONESIA JAYA [member] The entity PT SEAMLESS PIPE INDONESIA JAYA. PRUDENTIAL STEEL LTD. [member] The entity PRUDENTIAL STEEL LTD. S.C. SILCOTUB S.A. [member] The entity S.C. SILCOTUB S.A. SIAT SOCIEDAD ANONIMA [member] The entity SIAT SOCIEDAD ANONIMA. The entity TALTA—TRADING E MARKETING SOCIEDADE UNIPESSOAL LDA. TALTA—TRADING E MARKETING SOCIEDADE UNIPESSOAL LDA. [member] TALTA—TRADING E MARKETING SOCIEDADE UNIPESSOAL LDA. [member] TENARIS CONNECTIONS BV [member] The entity TENARIS CONNECTIONS BV. TENARIS FINANCIAL SERVICES S.A. [member] The entity TENARIS FINANCIAL SERVICES S.A. TENARIS GLOBAL SERVICES (CANADA) INC. [member] The entity TENARIS GLOBAL SERVICES (CANADA) INC. TENARIS GLOBAL SERVICES (U.S.A.) CORPORATION [member] The entity TENARIS GLOBAL SERVICES (U.S.A.) CORPORATION. TENARIS GLOBAL SERVICES (UK) LTD [member] The entity TENARIS GLOBAL SERVICES (UK) LTD. TENARIS GLOBAL SERVICES S.A. and subsidiaries [member] The entity TENARIS GLOBAL SERVICES S.A. and subsidiaries. Tenaris Investments (NL) B.V. [member] Represents information regarding Tenaris Investments (NL) B.V. TENARIS INVESTMENTS (NL) B.V. and subsidiaries [member] The entity TENARIS INVESTMENTS (NL) B.V. and subsidiaries. TENARIS INVESTMENTS S.àr.l. [member] The entity TENARIS INVESTMENTS S.àr.l. TENARIS INVESTMENTS SWITZERLAND AG and subsidiaries [member] The entity TENARIS INVESTMENTS SWITZERLAND AG and subsidiaries. TENARIS TUBOCARIBE LTDA. [member] The entity TENARIS TUBOCARIBE LTDA. TUBOS DE ACERO DE MEXICO S.A. [member] The entity TUBOS DE ACERO DE MEXICO S.A. The amount of reimbursement expenses associated with the nationalization of subsidiaries. Nationalization of subsidiaries, reimbursement expenses ifrs-full_PercentageOfVotingEquityInterestsAcquired Percentage of voting equity interests acquired ifrs-full_CashTransferred Cash transferred Consideration transferred, acquisition-date fair value Acquisition price fully paid Goodwill recognized ifrs-full_GoodwillRecognisedAsOfAcquisitionDate The amount of steel pipe manufacturing capacity. Manufacturing capacity, steel pipes (Metric Ton) Manufacturing capacity steel pipes Awards purchase agreement [member] This member stands for the information pertaining to awards purchase agreement. Awards Purchase Agreement [member] Property, Plant and Equipment Intangible assets Intangible assets The amount of working capital recognised as of acquisition date. Working capital recognised as of acquisition date Working capital Cash and Cash Equivalents ifrs-full_BorrowingsRecognisedAsOfAcquisitionDate Borrowings The amount recognised as of the acquisition date for provisions assumed in a business combination. Provisions Provisions recognised as of acquisition date Other assets and liabilities, net The amount recognised as of the acquisition date for other assets and liabilities, net acquired in a business combination. Other assets and liabilities net recognised as of acquisition date Net assets acquired ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed Venezuelan Companies [Member] Venezuelan Companies This member stands for the information pertaining to "Venezuelan Companies". Matesi Materiales Siderúrgicos S.A [member] The entity Matesi Materiales Siderúrgicos S.A. Tavsa and Comsigua [member] The entities AVSA - Tubos de Acero de Venezuela S.A. and Complejo Siderúrgico de Guayana, C.A. VENEZUELA Litigation Case [Axis] Litigation Case [Domain] International Centre for Settlement of Investment Disputes in Washington D C [Member] ICSID in Washington D.C. [member] This member stands for the information pertaining to "International Centre for Settlement of Investment Disputes {"ICSID"} in Washington D.C.". Federal Court in District of Columbia [Member] Federal court in District of Columbia [member] This member stands for the information pertaining to "Federal court in District of Columbia". The amount awarded, not including pre-award interest, as compensation for the nationalization of subsidiaries. Nationalization of subsidiaries, compensation award not including pre-award interest Nationalization of subsidiaries compensation award not including pre award interest The amount of pre-award interest associated with compensation for the nationalization of subsidiaries. Nationalization of subsidiaries, pre-award interest Nationalization of subsidiaries pre award interest Nationalization of subsidiaries compensation award including preaward interest and legal fees Nationalization of subsidiaries, compensation award including pre-award interest and legal fees The amount awarded, including pre-award interest and legal fees, as compensation for the nationalization of subsidiaries. Nationalization of subsidiaries reimbursement of legal fees Nationalization of subsidiaries, reimbursement of legal fees and administrative costs The amount of reimbursement of legal fees associated with the nationalization of subsidiaries. The grace period granted from the date of the award to make payment related to compensation for the nationalization of subsidiaries. Nationalization of subsidiaries, grace period granted from date of award to make payment Nationalization of subsidiaries grace period granted from date of award to make payment Nationalization of subsidiaries, post-award interest rate Nationalization of subsidiaries post award interest rate The rate at which interest will accrue if compensation for the nationalization of subsidiaries is not received by the due date. The period of post-award interest from the date of the award to payment in default related to compensation for the nationalization of subsidiaries. Nationalization of subsidiaries, period of post-award interest from date of award to payment in default Nationalization of subsidiaries period of post award interest from date of award to payment in default The amount of post-award interest for compensation for the nationalization of subsidiaries. Nationalization of subsidiaries, compensation award post-award interest Nationalization of subsidiaries compensation award postaward interest The amount awarded, including pre-award interest, as compensation for the nationalization of subsidiaries. Nationalization of subsidiaries, compensation award including pre-award interest Nationalization of subsidiaries compensation award including preaward interest Nationalization of subsidiaries compensation award including principal and post award interest Nationalization of subsidiaries, compensation award including including principal and post-award interest The amount awarded, including principal and post-award interest, as compensation for the nationalization of subsidiaries. Nationalization of subsidiaries, compensation award post-judgment interest Nationalization of subsidiaries compensation award post judgment interest The amount awarded, including pre-award interest and legal fees, as compensation for the nationalization of subsidiaries. Nationalization of subsidiaries compensation award including principal post award interest and post judgment interest Nationalization of subsidiaries, compensation award including principal, post-award interest and post-judgment interest The amount awarded, including pre-award interest and legal fees, as compensation for the nationalization of subsidiaries. The basis (reference rate) used for calculation of the interest rate on compensation for the nationalization of subsidiaries. Nationalization of subsidiaries, interest rate basis spread Nationalization of subsidiaries interest rate basis spread Nationalization of subsidiaries, basis spread on variable rate Nationalization of subsidiaries basis spread on variable rate Percentage points added to the reference rate to compute the variable rate on the interest receivable associated with the nationalization of subsidiaries. ifrs-full_InterestReceivable Interest receivable Disclosure of joint ventures [table] Welded pipe plant in West Siberia [member] Related to a welded pipe plant in West Siberia. Steel Pipe Premium Connection Threading Plant in Baotou [Member] Related to a steel pipe premium connection threading plant in Baotou. PAO Severstal [member] Related to PAO Severstal. Inner Mongolia Baotou Steel Union Company Ltd [Member] Related to Inner Mongolia Baotou Steel Union Company Ltd. JFE [member] Represents JFE. Disclosure of joint ventures [line items] Disclosure of joint ventures [line items] ifrs-full_OtherCashPaymentsToAcquireInterestsInJointVenturesClassifiedAsInvestingActivities Other cash payments to acquire interests in joint ventures ifrs-full_InvestmentsInJointVentures Investments in joint ventures The amount of estimated investments in joint ventures to be completed in next fiscal year. Estimated investments in joint ventures for next fiscal year Initial investment which is estimated to be completed during 2022 Annual manufacturing capacity which is estimated in the next fiscal year Estimated manufacturing capacity steel Pipes for next fiscal year The number of steel pipe manufacturing capacity estimated in the next fiscal year. Reserve of exchange differences on translation ifrs-full_ReserveOfExchangeDifferencesOnTranslation Currency translation adjustment reserve Unusual or Infrequent Item 1 [Table] Disclosure of information about the nature and financial statement effect of an event or transaction that is unusual in nature or infrequent in occurrence, or both. Commodities derivative contracts, Houston Ship Channel Gas [member] This member stands for the information pertaining to Houston Ship Channel Gas, commodities derivative contracts. Commodities derivative contracts, Houston Ship Channel Gas [member] Purchase Commodity [member] This member stands for the information pertaining to purchase commodity contracts. Purchase commodity contract [Member] Hedged items [member] Hedged items [axis] Unusual or Infrequent Item 1 [line items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Disclosure of non-adjusting events after reporting period [table] Non-adjusting events after reporting period [axis] Non-adjusting events after reporting period [member] Major business combination [member] Annual Dividend Proposal [Member] Represents annual dividend proposal. This member stands for the information pertaining to "Wind farm in Argentina". Wind farm in Argentina [member] Wind farm in Argentina Disclosure of non-adjusting events after reporting period [line items] Estimated investments in plan The amount of estimated investments to be made in a plan windfarm. Estimated investments plan windfarm The volume of estimated reduction of Carbon dioxide ("CO2") emissions of reporting entity in that country. Estimated reduction of Carbon dioxide emissions of reporting entity in that country Estimated reduction of carbon dioxide emissions in that country The percentage of energy requirements in that mill to be supplied by a specific plan. Percentage of energy requirements in that city to be supplied Percentage of energy requirements in that mill to be supplied Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share Annual dividend proposed to be distributed (in dollars per share) The amount, per American Depositary Security (ADS), of dividends proposed or declared before financial statements were authorised for issue but not recognised as distribution to owners. Each ADS equals two shares. Annual dividend proposed to be distributed, amount per ads (in dollars per share) Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owner per american depositary security Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners Annual dividend proposed to be distributed The per share amount of a dividend payable. Dividends payable, amount per share (in dollars per share) Dividends payable amount per share The amount of annual dividend payable. Annual dividend payable Annual dividend payable RUSSIAN FEDERATION Russia Other assets The amount recognised as of the acquisition date for other assets acquired in a business combination. The amount recognised as of the acquisition date for other liabilities assumed in a business combination. Other liabilities Other liabilities recognised as of acquisition date Deferred Tax Liabilities ifrs-full_DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate Disclosure of analysis of single amount of discontinued operations [table] Disposal groups classified as held for sale [member] Disclosure of analysis of single amount of discontinued operations [line items] Net income Income from discontinued operations ifrs-full_CashAndCashEquivalentsClassifiedAsPartOfDisposalGroupHeldForSale Cash at the beginning Cash at the end ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations (Decrease) Increase in cash (Used in) provided by operating activities Provided by (used in) investing activities Used in financing activities Total assets of disposal group classified as held for sale ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners Total liabilities of disposal group classified as held for sale ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale The gross cash inflow from the disposal of non-current assets or disposal groups classified as held for sale and discontinued operations. Gross proceeds from disposal of noncurrent assets or disposal groups classified as held for sale and discontinued operations Cash received Transaction and other costs Transaction and other costs related to disposals of discontinued operations The amount of transaction and other costs related to disposals of discontinued operations. The amount of net assets sold during the period in a disposal at carrying value. Carrying amount of net assets sold Net assets sold in disposal carrying amount The gross gain (loss) recognised on the measurement to fair value less costs to sell or on the disposal of the assets or disposal group(s) constituting the discontinued operation. Gross gain loss recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation Gain on sale before income tax ifrs-full_TaxExpenseRelatingToGainLossOnDiscontinuance Income tax expense on gain After tax gain on the sale of Conduit Gain (loss) recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation Gain on sale after income tax Result for discontinued operations Net Income for discontinued operations Industrial, Power and Others Significant borrowings three, as of closing date [member] Significant borrowings three, as of closing date [member] This member stands for the information pertaining to "Significant borrowings three, as of closing date". Significant borrowings four, as of closing date [member] This member stands for the information pertaining to "Significant borrowings four, as of closing date". Significant borrowings four, as of closing date [member] Reclassification adjustments on exchange differences on translation of foreign operations, net of tax Reclassification of currency translation adjustment reserve Adjustments for Reclassification of Foreign Exchange Reserve Reclassification of currency translation adjustment reserve The amount of adjustments for reclassification foreign exchange to reconcile profit (loss) to net cash flow from (used in) operating activities. Currency translation adjustment, working capital The amount of currency translation adjustment working capital to reconcile profit (loss) to net cash flow from (used in) operating activities. Currency translation adjustment working capital Oil and Gas Processing Plants [Member] Oil and Gas processing plants [member] This member stands for the information pertaining to oil and gas processing plants. Other Operating Income Reclassification of Currency Translation Adjustment Reserve Reclassification of currency translation adjustment reserve Amount of other operating income attributable to reclassification of currency translation adjustment reserve. Other Operating Expense Securities Exchange Commission Investigation Settlement Securities Exchange Commission investigation settlement Amount of other operating expense attributable to securities Exchange Commission investigation settlement. Disclosure of Financial Results [Table] Schedule disclosing information related to financial result. This member stands for the information pertaining to argentine sovereign bonds. Argentine sovereign bonds Argentine Sovereign Bonds [Member] Loss Arising from Dividend Paid in Kind Loss arising from dividend paid in kind Amount of loss arising from dividend paid in kind. Disclosure of Financial Results [Line Items] Schedule disclosing information related to financial result. Land [member] Property, plant and equipment, restrictions on title Restricted assets Saudi Arabia Percentage of ownership interest in subsidiary Other assets [member] Lease Liabilities Capital Repayments Repayments of lease liabilities The amount of capital repayments of lease liabilities. Interest expense on lease liabilities Net disposals Cancellations of lease liabilities Non-current Receivables [Table] Schedule disclosing information related to non-current receivables. Non-current Receivables [Line Items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. PIS and COFINS [member] This member stands for the information pertaining to Social Integration Program (PIS) and Contribution for Social Security Financing (COFINS). Used and other movements CHINA Tenaris Qingdao Steel Pipes Ltd [Member] TENARIS QINGDAO STEEL PIPES LTD. [member] This member stands for the information pertaining to Tenaris Qingdao Steel Pipes Ltd. This member stands for the information pertaining to Parques Eolicos de la Buena Ventura S.A. which acquired by entity through business combination. Parques Eolicos de la Buena Ventura S.A. [member] Fair value of acquired assets and liabilities Nationalization of subsidiaries, reimbursement expenses Benteler Steel and Tube Manufacturing Corporation [member] This member stands for the information pertaining to Benteler Steel & Tube Manufacturing Corporation. Benteler Steel & Tube Manufacturing Corporation [member] Definitive Agreement [member] This member stands for the information pertaining to definitive agreement. Definitive agreement [member] Impairment loss on investment in joint venture The amount of Impairment loss on investment in joint venture. Impairment loss on investment in joint venture Disclosure of Climate Change [Abstract] Disclosure of climate change. [abstract] Note 37 - Climate change The disclosure of climate change. Disclosure of climate change [text block] Time horizon [axis] Time horizon [axis] Time horizon [member] Time horizon [Member] Medium term target [member] This member stands for the information pertaining to medium term target, climate change time horizon. Medium term target [member] Disclosure of climate change [line items] Disclosure of climate change [line items] Percentage of target for reducing carbon emissions intensity The percentage of the target for reducing the intensity of carbon emissions. Percentage of target for reducing carbon emissions intensity Period over climate-related target applies The description of the period over which the climate-related target applies. Period over climate-related target applies Baseline from which progress for climate-related target is measured The description of the baseline from which progress for climate-related target is measured. Baseline from which progress for climate-related target is measured Commodities derivative contracts, London Metal Exchange Scrap [member] This member stands for the information pertaining to London Metal Exchange Scrap, commodities derivative contracts. Commodities derivative contracts, LME Scrap [member] Commodities derivative contracts, Iron Ore [member] This member stands for the information pertaining to Iron Ore, commodities derivative contracts. Commodities derivative contracts, Iron Ore [member] Commodities derivative contracts, Electric Energy [member] This member stands for the information pertaining to Electric Energy, commodities derivative contracts. Commodities derivative contracts, Electric Energy [member] Commodities derivative contracts, Title Transfer Facility Gas [member] This member stands for the information pertaining to Title Transfer Facility Gas, commodities derivative contracts. Commodities derivative contracts, TTF Gas [member] Purchase foreign exchange contract [Member] This member stands for the information pertaining to purchase foreign exchange contracts. Purchase currency [member] Other investments current, fund investments The amount of current investment related to fund investments. Fund investments Finite-lived intangible asset, reviewed useful life The useful life, measured as period of time, reviewed for intangible assets other than goodwill. Finite-lived intangible asset, reviewed useful life (Year) Useful life measured as period of time, intangible assets other than goodwill Intangible assets other than goodwill, useful life (Year) U.S. dollar / Brazilian Real foreign exchange risk [member] This member stands for the information pertaining to U.S. dollar / Brazilian Real foreign exchange risk. U.S. dollar / Brazilian Real foreign exchange risk [member] One percent change, Brazilian Real / U.S. dollar foreign exchange risk [member] This member stands for the information pertaining to one percent change in Brazilian Real / U.S. dollar foreign exchange risk. One percent change, Brazilian Real / U.S. dollar foreign exchange risk [member] Net receivables Level 3 [member] Mutual fund financial instruments [member] This member stands for the information pertaining to Securities classified as Mutual Fund. Mutual Fund [member] Operating income (loss) Impairment loss recognised in profit or loss in non-consolidated companies The amount of impairment loss recognised in profit or loss in non-consolidated companies. Impairment loss in non-consolidated companies EEW [member] This member stands for the information pertaining to EEW. EEW [member] Write-downs of investment The amount recognised resulting from the write-down of investment. Write-downs of investment Period over which management has projected cash flows Period over which management has projected cash flows based on financial budgets/forecasts approved by management. Period over which management has projected cash flows Proportion of ownership interest in associate after acquisitions The proportion of ownership interest after acquisitions in a joint operation attributable to the entity. Proportion of ownership interest in associate after acquisitions Increase in corporate guarantee covering obligations The amount of increase in corporate guarantee that covers obligations made under a loan agreement. Increase in corporate guarantee covering obligations Dividends and distributions declared Less impairment charges (non-deductible) Later than three years [member] Tubos del Caribe [member] This member stands for the information pertaining to Tubos del Caribe. Tubos del Caribe [member] Argentine sovereign bonds [member] Distribution of dividend in kind The amount of distribution of dividend in kind. Distribution of dividend in kind Financial instrument, market valuation Financial instruments designated as hedging instruments, at fair value Gains (losses) on hedging instrument, fair value hedges Contingent liability for disgorgement and prejudgment interest [member] This member stands for the information pertaining to contingent liability for disgorgement and prejudgment interest. Contingent liability for disgorgement and prejudgment interest [member] Contingent liability for civil penalty [member] This member stands for the information pertaining to contingent liability for civil penalty. Contingent liability for civil penalty [member] Petroleo Brasileiro S.A. [member] This member stands for the information pertaining to Petroleo Brasileiro S.A. (“Petrobras”). Petróleo Brasileiro S.A. (“Petrobras”) [member] Luxembourg Vestas Group [member] This member stands for the information pertaining to Vestas Group. Vestas Group [member] Ternium USA, Inc. [member] This member stands for the information pertaining to Ternium USA, Inc. Ternium USA, Inc. [member] Presidente Nestor Kirchner Gas Pipeline [member] This member stands for the information pertaining to Presidente Nestor Kirchner Gas Pipeline (“GPNK”). Presidente Nestor Kirchner Gas Pipeline (“GPNK”) [member] Percent of minimum transfer of net profit to legal reserve The proportion of minimum transfer of net profit to legal reserve. Percent of minimum transfer of net profit to legal reserve Percent of minimum transfer of net profit until legal reserve equals issued share capital The proportion of minimum transfer of net profit until legal reserve equals issued share capital. Percent of minimum transfer of net profit until legal reserve equals issued share capital Reclassification of currency translation adjustment reserve Tax expense (income) at applicable tax rate Tax effect from change in tax rate Tax effect of tax losses Income tax relating to exchange differences on translation of foreign operations included in other comprehensive income Effect of currency translation on tax base Decrease (increase) in net defined benefit liability (asset) resulting from payments from plan Geographical [Axis] Geographical [Domain] Provision used other provisions movements Used and other movements The amount used (ie incurred and charged against the provision) and other provisions movements. One percent change, All foreign exchange exposure vs USD dollar foreign exchange risk [member] One percent change, All foreign exchange exposure vs USD dollar foreign exchange risk [member] Number of shares to be purchased under agreement Foreign exchange and commodities derivatives contracts [member] This member stands for the information pertaining to foreign exchange and commodities derivatives contracts. Foreign Exchange & Commodities [member] Non-current legal deposits The amount of non-current legal deposits. Legal deposits Impairment loss (reversal of impairment loss) non-deductible The amount of impairment loss or reversal of impairment loss non-deductible. Less impairment charges (non-deductible) Major purchases of assets [member] International market [member] This member stands for the information pertaining to international market. International market [member] Other Stakeholder [member] Other stakeholder [member] This member stands for the information pertaining to other stakeholder. This member stands for the information pertaining to Tenaris SA. Tenaris SA [member] Tenaris SA [member] At the end of the year Loss on interest rate risk if market interest rates were higher At the beginning of the year European sovereign counterparties [member] This member stands for the information pertaining to European sovereign counterparties. Other current Non-current benefits Liability outstanding The amount of other current non-current benefits. Tax inflation adjustments Tax revaluation, withholding tax and others, includes a net tax income The amount represents the difference between the after tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to expenses not deductible in determining profit (loss). Values at the beginning of the year Values at the end of the year Nationalization of subsidiaries purchase agreement The amount of price of the purchase agreement associated with the nationalization of subsidiaries. Purchase agreement Nationalization of subsidiaries non-refundable signing payment as reimbursement of expenses Non-refundable signing payment as reimbursement of expenses The amount of non-refundable signing payment as reimbursement of expenses associated with the nationalization of subsidiaries. Other currencies hedged to U.S. dollar [member] Other currencies hedged to U.S. dollar [member] This member stands for the information pertaining to other currencies hedged to U.S. dollar. Income taxes accrued Tax accrued The amount of income taxes accrued. C.T.A foreign exchange risk currency exposure CTA foreign exchange risk currency exposure The amount of exchange differences arise from CTA foreign exchange risk currency exposure. Gains (losses) on exchange differences on translation of foreign operations, before tax Currency translation adjustment Reclassification of currency translation adjustment reserve The percentage of company voting capital in control group upon the closing of the transaction under share purchase agreement. Percentage of voting capital in control group Majority percentage of control group shares The majority percentage of control group shares for ordinary decisions. Majority percentage of control group shares Thresold number of trading days immediately prior to date of exercising option The thresold number of trading days immediately prior to date of exercising option to calculate moving average share price. Thresold number of trading days immediately prior to date of exercising option Number of trading days to calculate moving average share price The number of trading days to calculate moving average share price. Number of trading days to calculate moving average share price Number of shares outstanding in control group