XML 327 R119.htm IDEA: XBRL DOCUMENT
v3.22.1

The effects on the result, considering the probable scenarios, 1 and 2 are shown below: (Details) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 BRL (R$)
Probable Scenario [Member] | Ordinary Shares One [Member] |
IfrsStatementLineItems [Line Items] |
Sensitivity analysis for stock price risks | R$ (77,353)
Probable Scenario [Member] | Preference Sharesone [Member] |
IfrsStatementLineItems [Line Items] |
Sensitivity analysis for stock price risks | (41,799)
Probable Scenario [Member] | Preference Shares Two [Member] |
IfrsStatementLineItems [Line Items] |
Sensitivity analysis for stock price risks | (9,516)
Scenario I I Three [Member] | Ordinary Shares One [Member] |
IfrsStatementLineItems [Line Items] |
Sensitivity analysis for stock price risks | (386,767)
Scenario I I Three [Member] | Preference Sharesone [Member] |
IfrsStatementLineItems [Line Items] |
Sensitivity analysis for stock price risks | (208,997)
Scenario I I Three [Member] | Preference Shares Two [Member] |
IfrsStatementLineItems [Line Items] |
Sensitivity analysis for stock price risks | (47,580)
Scenario I I Two [Member] | Ordinary Shares One [Member] |
IfrsStatementLineItems [Line Items] |
Sensitivity analysis for stock price risks | (773,534)
Scenario I I Two [Member] | Preference Sharesone [Member] |
IfrsStatementLineItems [Line Items] |
Sensitivity analysis for stock price risks | (417,995)
Scenario I I Two [Member] | Preference Shares Two [Member] |
IfrsStatementLineItems [Line Items] |
Sensitivity analysis for stock price risks | R$ (95,160)

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

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Name: | sid_SensitivityAnalysisForStockPriceRisks
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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Name: | ifrs-full_ProbabilityOfDefaultAxis=sid_ProbableScenarioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=sid_OrdinarySharesOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=sid_PreferenceSharesoneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=sid_PreferenceSharesTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ProbabilityOfDefaultAxis=sid_ScenarioIIThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ProbabilityOfDefaultAxis=sid_ScenarioIITwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |