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8. INVESTMENTS (Details 6) - CBSI - Companhia Brasileira De Servicos De Infraestrutura [Member] R$ in Thousands | Nov. 29, 2019 BRL (R$)
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InvestmentsLineItems [Line Items] |  |
Consideration paid for the acquisition of the remaining 50% interest in CBSI | R$ 24,000 | [1]
Fair value of the stake previously held by CSN | 8,775 | [2]
Total consideration paid for the acquisition of CBSI | 32,775 |
Fair value of CBSI's shareholders' equity on the acquisition date | (17,550) |
Goodwill | R$ 15,225 |
[1] | Total amount paid for another 50% of the CBSI company.
[2] | 50% of the stake held prior to the acquisition;

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- Definition The acquisition-date fair value of equity interest in the acquiree held by the acquirer immediately before the acquisition date in a business combination achieved in stages. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B64 -Subparagraph p -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_p_i&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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- Definition The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B64 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_f&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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