XML 227 R194.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

EMPLOYEE BENEFITS (Details 11) R$ in Thousands | Dec. 31, 2023 BRL (R$)
--- | ---
IfrsStatementLineItems [Line Items] |
Defined benefit plan forecast future benefit payment | R$ 2,863,475
Defined benefit plans other than multi-employer plans, state plans and plans that share risks between entities under common control [member] |
IfrsStatementLineItems [Line Items] |
Year 1 | 339,223
Year 2 | 316,898
Year 3 | 309,058
Year 4 | 299,948
Year 5 | 291,230
Next 5 years | R$ 1,307,118

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

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

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

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

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

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

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

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

X
- Details
Name: | ifrs-full_DefinedBenefitPlansAxis=ifrs-full_DefinedBenefitPlansOtherThanMultiemployerPlansStatePlansAndPlansThatShareRisksBetweenEntitiesUnderCommonControlMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |