XML 209 R150.htm IDEA: XBRL DOCUMENT v3.23.1

LEASE LIABILITIES (Details Narrative)	12 Months Ended
	Dec. 31, 2022
Bottom of range [member] | Operational Facilities [Member]
IfrsStatementLineItems [Line Items]
Lease agreement remaining term	1 year
Top of range [member] | Operational Facilities [Member]
IfrsStatementLineItems [Line Items]
Lease agreement remaining term	13 years
Two Year Arrangement [Member]
IfrsStatementLineItems [Line Items]
Average increment rate	14.00%
Five Year Arrangement [Member]
IfrsStatementLineItems [Line Items]
Average increment rate	18.02%

X

- References

No definition available.

+ Details

Name:	sid_AverageIncrementalRate
Namespace Prefix:	sid_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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_LeaseAgreementRemainingTerm
Namespace Prefix:	sid_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=sid_OperationalFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=sid_TwoYearArrangementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=sid_FiveYearArrangementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: