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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2018
Summary Of Significant Accounting Policies Tables Abstract  
Subsidiaries, joint ventures and joint operations

 

    Equity interests (%)  
Companies   12/31/2018   12/31/2017   Core business
             
Direct interest in subsidiaries: full consolidation            
CSN Islands VII Corp.    100.00     100.00    Financial transactions
CSN Islands XI Corp.    100.00     100.00    Financial transactions
CSN Islands XII Corp.    100.00     100.00    Financial transactions
CSN Minerals S.L.U. (1)        100.00    Equity interests
CSN Export Europe, S.L.U. (1)        100.00    Financial transactions and Equity interests
CSN Metals S.L.U. (1)        100.00    Equity interests and Financial transactions 
CSN Americas S.L.U. (1)        100.00    Equity interests and Financial transactions 
CSN Steel S.L.U.    100.00     100.00    Equity interests and Financial transactions 
TdBB S.A (*)    100.00     100.00    Equity interests
Sepetiba Tecon S.A.    99.99     99.99    Port services
Minérios Nacional  S.A.    99.99     99.99    Mining and Equity interests
Companhia Florestal do Brasil    99.99     99.99    Reforestation
Estanho de Rondônia S.A.    99.99     99.99    Tin Mining 
Companhia Metalúrgica Prada    99.99     99.99    Manufacture of containers and distribution of steel products
CSN Gestão de Recursos Financeiros Ltda. (*)    99.99     99.99    Management of funds and securities portfolio
CSN Mineração S.A.     87.52     87.52    Mining and Equity interests
CSN Energia S.A.     99.99     99.99    Sale of electric power
FTL - Ferrovia Transnordestina Logística S.A.     91.69     90.78    Railroad logistics
Nordeste Logística S.A.    99.99     99.99    Port services
Aceros México CSN (2)    0.08        Commercial representation, sales of steel and related activities
CSN Inova Ltd.(3)    100.00        Advisory and implementation of new development projects
             
Indirect interest in subsidiaries: full consolidation            
Companhia Siderúrgica Nacional (4)        100.00    Steel
Lusosider Projectos Siderúrgicos S.A.    100.00     99.94    Equity interests and product sales
Lusosider Aços Planos, S. A.    99.99     99.99    Steel and Equity interests
CSN Resources S.A.    100.00     100.00    Financial transactions and Equity interests
Companhia Brasileira de Latas     99.00     99.99    Sale of cans and containers in general and Equity interests
Companhia de Embalagens Metálicas - MMSA     99.67     99.67    Production and sale of cans and related activities
Companhia de Embalagens Metálicas - MTM     99.67     99.67    Production and sale of cans and related activities
CSN Steel Holdings 1, S.L.U.     100.00     100.00    Financial transactions, product sales and Equity interests
CSN Productos Siderúrgicos S.L.    100.00     100.00    Financial transactions, product sales and Equity interests
Stalhwerk Thüringen GmbH     100.00     100.00    Production and sale of long steel and related activities
CSN Steel Sections UK Limited (*)    100.00     100.00    Sale of long steel
CSN Steel Sections Polska Sp.Z.o.o     100.00     100.00    Financial transactions, product sales and Equity interests
CSN Asia Limited     100.00     100.00    Commercial representation
CSN Mining Holding, S.L      87.52     87.52    Financial transactions, product sales and Equity interests
CSN Mining GmbH    87.52     87.52    Financial transactions, product sales and Equity interests
CSN Mining Asia Limited     87.52     87.52    Commercial representation
Aceros México CSN (2)                 99.92               100.00   Commercial representation, sale of steel and related activities
Lusosider Ibérica S.A               100.00                 99.94   Steel, commercial and industrial activities and equity interests
CSN Mining Portugal, Unipessoal Lda.                 87.52                 87.52   Commercial and representation of products
Companhia Siderúrgica Nacional, LLC (4)               100.00       Import and distribution/resale of products
             
Direct interest in joint operations            
Itá Energética S.A.    48.75     48.75    Electric power generation
Consórcio da Usina Hidrelétrica de Igarapava    17.92     17.92    Electric power consortium
             
Direct interest in joint ventures            
MRS Logística S.A.    18.64     18.64    Railroad transportation
Aceros Del Orinoco S.A.     31.82     31.82    Dormant company
CBSI - Companhia Brasileira de Serviços de Infraestrutura     50.00     50.00    Equity interests and product sales and iron ore
Transnordestina Logística S.A.     46.30     46.30    Railroad logistics
             
Indirect interest in joint ventures            
MRS Logística S.A.    16.30     16.30    Railroad transportation
             
Direct interest in associates            
Arvedi Metalfer do Brasil S.A.     20.00     20.00    Metallurgy and Equity interests
Exclusive funds
    Equity interests (%)  
Exclusive funds   12/31/2018   12/31/2017   Core business
Direct interest: full consolidation            
Diplic II - Private credit balanced mutual fund    100.00    100.00   Investment fund
Caixa Vértice - Private credit balanced mutual fund    100.00    100.00   Investment fund
VR1 - Private credit balanced mutual fund    100.00    100.00   Investment fund
Concessions

 

Concession   Net book value (R$)   Classification in balance sheet
Sepetiba Tecon S.A. (TECON)   347 million   Fixed assets and intangible (Software)
       
Tecar (CSN Mineração)   1,616 million   Fixed assets and intangible (Software)
       
FTL - Ferrovia Transnordestina Logística S.A. (FTL)   227 million   Fixed assets
Transnordestina logística S.A. (TLSA)   8,439 million (1) Investment
New standards and interpretations issued and not yet adopted

 

Standard Main items introduced by the standard Effective date

 

 

 

 

IFRS16 – Leases

This new standard defines the principles for recognition, measurement, presentation and disclosure of leases and introduces a single model for the accounting of leases in the balance sheet for the lessees. A lessee recognizes a right of use asset that represents his right to use the leased asset and a lease liability that represents his obligation to make lease payments. Optional exemptions are available for short-term leases and low-value items. For lessors, accounting treatment remains practically the same, with the classification of leases as operating leases or financial leases.

 

IFRS 16 replaces existing lease standards, including IAS 17 - Leasing operations and IFRIC 4, SIC 5 and SIC 27 - Complementary aspects of leasing operations

 January 1, 2019
IFRIC 23 – Uncertainty over Income Tax Treatments Can be unclear how tax law applies to a particular transaction or circumstance. This interpretation complements IAS 12 – Income Tax, to clarify how to reflect the effects of uncertainty over income tax treatments. January 1, 2019

 

The Conceptual framework for financial reporting

 

 Review of the Conceptual Framework by establishing a comprehensive set of concepts for guidance on financial performance reporting; better definitions and guidelines, highlighting the definition of a liability; and clarification in relevant areas.

 

January 1, 2020