XML 113 R80.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

BUSINESS COMBINATION (Details 7) - Santa Ana Energetica And Topazio Energetica S A [Member] R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 BRL (R$)
Business Property Plant And Equipment 1 [Member] |
IfrsStatementLineItems [Line Items] |
Description of basis of valuation of assets available for benefits | The amounts of property, plant and equipment were adjusted by the difference between the fair value of the PP&E and their respective net carrying amounts, as per the technical valuation conducted by an independent appraiser for the groups of assets represented by improvements, constructions, vehicles, furniture and fixtures. The useful lives follow the periods disclosed in Note 11
Carrying Amount 1 [Member] |
IfrsStatementLineItems [Line Items] |
Property, plant and equipment | R$ 201,657
Total | 201,657
Fair Value Adjustments 1 [Member] |
IfrsStatementLineItems [Line Items] |
Property, plant and equipment | (68,835)
Total Fair Value 1 [Member] |
IfrsStatementLineItems [Line Items] |
Property, plant and equipment | R$ 132,822
Intangible Assets 1 [Member] |
IfrsStatementLineItems [Line Items] |
Description of basis of valuation of assets available for benefits | Evaluated by the MPEEM method that measures the present value of future income to be generated during the remaining useful life of a given asset. Using the analysis of the company's projected results as a reference, the pre-tax cash flows directly attributable to the asset are calculated, as of the base date stipulated in the evaluation
Fair Value Adjustments 2 [Member] |
IfrsStatementLineItems [Line Items] |
Intangible assets | R$ 328,437
Total | 259,602
Total Fair Value 2 [Member] |
IfrsStatementLineItems [Line Items] |
Intangible assets | 328,437
Total | R$ 461,259

X
- Definition The description of the basis of valuation of assets available for benefits in retirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2023-01-01 -Paragraph 35 -Subparagraph a -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2023-en-r&anchor=para_35_a_ii&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_DescriptionOfBasisOfValuationOfAssetsAvailableForBenefits
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
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_IntangibleAssets
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | sid_PropertyPlantAndEquipment2
Namespace Prefix: | sid_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=sid_BusinessPropertyPlantAndEquipment1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=sid_SantaAnaEnergeticaAndTopazioEnergeticaSAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=sid_CarryingAmount1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=sid_FairValueAdjustments1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=sid_TotalFairValue1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=sid_IntangibleAssets1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=sid_FairValueAdjustments2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=sid_TotalFairValue2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |