XML 78 R59.htm IDEA: XBRL DOCUMENT v3.21.1

21. PROVISION FOR ENVIRONMENTAL LIABILITIES AND ASSET RETIREMMENT OBLIGATIONS (Tables)

12 Months Ended

Dec. 31, 2020

Provision For Environmental Liabilities And Asset Retirement Obligations

Schedule of provision for environmental liabilities and asset retirement obligation

The balance of provisions for environmental liabilities and deactivation of assets can be shown as follows:

			Consolidated
	12/31/2020		12/31/2019
Environmental liabilities	192,830		192,270
Asset retirement obligations	611,005		331,731
	803,835		524,001

X

- References

No definition available.

+ Details

Name:	sid_ProvisionForEnvironmentalLiabitiesAndAssetRetiremmentObligationsAbstract
Namespace Prefix:	sid_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Schedule disclosing information related to the summary of transactions with subsidiaries joint ventures associates exclusive funds and other related parties by company assets and liabilities .

+ References

No definition available.

+ Details

Name:	sid_SummaryOfProvisionForEnvironmentalLiabilitiesAndAssetRetirementObligationTableTextBlock
Namespace Prefix:	sid_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration