XML 191 R132.htm IDEA: XBRL DOCUMENT
v3.23.1

FINANCIAL INSTRUMENTS (Details 7) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
IfrsStatementLineItems [Line Items] |  |
Other income and expenses | R$ (52,290) | R$ (27,728)
Exchange variation | (4,333) | 16,790
Appreciation asset position | 4,841,261 |
Appreciation liability position | (5,258,194) |
Fair value (market) Amounts receivable / (payable) | (416,933) |
Other comprehensive income | 341,269 |
Settled Date 1 [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Other income and expenses |  | (27,728)
Exchange variation |  | R$ 16,790
Settled Date 2 [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Other income and expenses | 23,374 |
Exchange variation | (1,087) |
Settled Date 3 [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Other income and expenses | (75,664) |
Exchange variation | 667 |
Appreciation asset position | 797,721 |
Appreciation liability position | (873,385) |
Fair value (market) Amounts receivable / (payable) | (75,664) |
Settled Date 4 [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exchange variation | (1,484) |
Appreciation asset position | 1,098,354 |
Appreciation liability position | (1,218,934) |
Fair value (market) Amounts receivable / (payable) | (120,580) |
Other comprehensive income | 120,580 |
Settled Date 5 [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exchange variation | (1,244) |
Appreciation asset position | 1,087,106 |
Appreciation liability position | (1,197,361) |
Fair value (market) Amounts receivable / (payable) | (110,255) |
Other comprehensive income | 110,255 |
Settled Date 6 [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exchange variation | (938) |
Appreciation asset position | 696,149 |
Appreciation liability position | (770,062) |
Fair value (market) Amounts receivable / (payable) | (73,913) |
Other comprehensive income | 73,913 |
Settled Date 7 [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exchange variation | (131) |
Appreciation asset position | 372,109 |
Appreciation liability position | (385,572) |
Fair value (market) Amounts receivable / (payable) | (13,463) |
Other comprehensive income | 13,463 |
Settled Date 8 [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exchange variation | (81) |
Appreciation asset position | 392,861 |
Appreciation liability position | (404,946) |
Fair value (market) Amounts receivable / (payable) | (12,085) |
Other comprehensive income | 12,085 |
Settled Date 9 [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exchange variation | (35) |
Appreciation asset position | 396,961 |
Appreciation liability position | (407,934) |
Fair value (market) Amounts receivable / (payable) | (10,973) |
Other comprehensive income | R$ 10,973 |

X
- Definition Appreciation asset position. + References No definition available. + Details
Name: | sid_AppreciationAssetPosition
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Appreciation liability position. + References No definition available. + Details
Name: | sid_AppreciationLiabilityPosition
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | sid_ExchangeVariation
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | sid_FairValueMarketAmountsReceivablePayable
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- References No definition available. + Details
Name: | sid_OtherComprehensiveIncomes
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | sid_OtherOperatingIncomeExpenses
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_MaturityAxis=sid_SettledDate1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=sid_SettledDate2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=sid_SettledDate3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=sid_SettledDate4Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=sid_SettledDate5Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=sid_SettledDate6Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=sid_SettledDate7Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=sid_SettledDate8Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=sid_SettledDate9Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |