XML 125 R106.htm IDEA: XBRL DOCUMENT v3.21.1

13. BORROWINGS AND FINANCING (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
BorrowingsAndFinancingLineItems [Line Items]
New debts	R$ 8,116,247	R$ 10,149,381
Repayment	(6,448,658)	(11,775,093)	R$ (5,019,978)
Interest payment	(1,922,130)	R$ (2,039,112)
Prepayment [member]
BorrowingsAndFinancingLineItems [Line Items]
New debts	177,420
Repayment	(1,028,606)
Interest payment	(245,125)
Bonds, Perpetual Bonds, ACC and Facility [member]
BorrowingsAndFinancingLineItems [Line Items]
New debts	7,917,929
Repayment	(4,458,888)
Interest payment	(1,237,396)
BNDES/FINAME, Debentures, NCE and CCB [member]
BorrowingsAndFinancingLineItems [Line Items]
New debts	20,898
Repayment	(961,164)
Interest payment	R$ (439,609)

X

- Definition

The amount of interest expense on borrowings. [Refer: Interest expense; Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_InterestExpenseOnBorrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2020-01-01
-Paragraph 17
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_17_d&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount refers to additional funding transactions.

+ References

No definition available.

+ Details

Name:	sid_AdditionalFundingTransactions
Namespace Prefix:	sid_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=sid_PrepaymentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=sid_BondsPerpetualBondsACCAndFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=sid_BNDESFINAMEDebenturesNCEAndCCBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: