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v3.23.1

INSURANCE (Details Narrative) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 BRL (R$)
Insurance |
Indemnity limit | R$ 600
Deductible material damages | R$ 385

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

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

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