XML 155 R136.htm IDEA: XBRL DOCUMENT
v3.21.1

16. LEASES (Details 5) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
PresentationOfLeasesForLesseeLineItems [Line Items] |  |  |
Lease Liability | R$ 530,131 | R$ 474,390 | R$ 640,989
Right of net use | 511,882 | 472,345 |
Financial expenses | (50,513) | (49,118) |
Depreciation | (57,342) | (53,826) |
Rate in nominal terms and actual flow [member] |  |  |
PresentationOfLeasesForLesseeLineItems [Line Items] |  |  |
Lease Liability | 595,193 | 579,390 |
Right of net use | 547,671 | 567,905 |
Financial expenses | (63,744) | (57,556) |
Depreciation | R$ (59,560) | R$ (57,356) |

X
- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_LeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of depreciations. + References No definition available. + Details
Name: | sid_Depreciations
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of financial expense. + References No definition available. + Details
Name: | sid_FinancialExpense
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | sid_PresentationOfLeasesForLesseeLineItems
Namespace Prefix: | sid_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represent information about the right of use. + References No definition available. + Details
Name: | sid_RightOfUse
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | sid_RateAxis=sid_RateInNominalTermsAndActualFlowMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |