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EMPLOYEE BENEFITS (Details 2) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |
Cost of service | R$ 1,225 | R$ 1,253 | R$ 968
Interest cost | 324,041 | 231,009 | 236,551
Defined benefit plans other than multi-employer plans, state plans and plans that share risks between entities under common control [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Present value of obligations at the beginning of the year | 3,151,609 | 3,645,822 | 3,581,460
Consolidation of CSN Cimentos Brasil | 67,640 |  |
Cost of service | 1,225 | 1,253 | 968
Interest cost | 324,041 | 231,009 | 236,551
Participant contributions made in the period | 1,382 | 1,398 | 1,998
Benefits paid | (310,471) | (283,393) | (278,960)
Actuarial loss/(gain) | (124,578) | (444,480) | 103,805
Present value of obligations at the ending of the year | R$ 3,110,848 | R$ 3,151,609 | R$ 3,645,822

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- Definition The amount of benefits paid or payable for retirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2022-03-24 -Paragraph 35 -Subparagraph b -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2022-en-r&anchor=para_35_b_v&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from contributions to a defined benefit plan. [Refer: Net defined benefit liability (asset); Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 141 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_141_f&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from employee service in the current period. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 141 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_141_a&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_57_a&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 141 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_141_b&doctype=Standard -URIDate 2022-03-24 + Details
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