The amount of outstanding funds that the entity is obligated to repay.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_Borrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_BorrowingsInterestRate
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of current borrowings and current portion of non-current borrowings. [Refer: Borrowings]

+ References

+ Details

Name:	ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowingsByTypeAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of current interest payable. [Refer: Interest payable]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_CurrentInterestPayable
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of interest recognised as a liability.

+ References

+ Details

Name:	ifrs-full_InterestPayable
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The non-current portion of non-current borrowings. [Refer: Borrowings]

+ References

+ Details

Name:	ifrs-full_LongtermBorrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ifrs-full_NoncurrentPortionOfNoncurrentBorrowingsByTypeAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	suz_AggregateBorrowingsCurrentAndNonCurrentAbstract
Namespace Prefix:	suz_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of borrowings before other adjustments.

+ References

No definition available.

+ Details

Name:	suz_BorrowingsBeforeOtherAdjustments
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of current borrowings and current portion of non-current borrowings before other adjustments.

+ References

No definition available.

+ Details

Name:	suz_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowingsBeforeOtherAdjustments
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The non-current portion of non-current borrowings before other adjustments.

+ References

No definition available.

+ Details

Name:	suz_LongTermBorrowingsBeforeOtherAdjustments
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of non-current funding.

+ References

No definition available.

+ Details

Name:	suz_NonCurrentFunding
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of non-current funding relating to current portion.

+ References

No definition available.

+ Details

Name:	suz_NonCurrentFundingCurrent
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of non-current funding relating to non current portion.

+ References

No definition available.

+ Details

Name:	suz_NonCurrentFundingNonCurrent
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	ifrs-full_GeographicalAreasAxis=ifrs-full_ForeignCountriesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=ifrs-full_FixedInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=suz_SOFRFixedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=suz_SOFRMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

Name:	ifrs-full_GeographicalAreasAxis=ifrs-full_CountryOfDomicileMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=suz_CDIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=suz_BNDESUMBNDESMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=suz_BrazilianFederalLongTermInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=suz_BrazilianFederalLongTermRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=suz_SpecialSettlementAndCustodySystemMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=suz_BNDESTRMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=suz_CDIIPCAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LOANS, FINANCING AND DEBENTURES - Breakdown by type (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current
Current borrowings	R$ 10,501,387	R$ 4,758,247
Interest on financing	1,541,312	1,232,810
Non-current funding	8,960,075	3,525,437
Non-current
Non-current borrowings	90,934,144	72,414,445
Non-current funding	90,934,144	72,414,445
Total
Total borrowings	101,435,531	77,172,692	R$ 74,574,591
Interest on financing	1,541,312	1,232,810
Non-current funding	99,894,219	75,939,882
Foreign
Current
Current borrowings before other adjustments	9,607,427	3,603,074
Non-current
Non-current borrowings before other adjustments	73,397,488	57,701,599
Total
Borrowings, before other adjustments	83,004,915	61,304,673
Foreign \| Bonds
Non-current
Non-current borrowings	R$ 49,166,804
Foreign \| Bonds \| Fixed
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	5.00%
Current
Current borrowings before other adjustments	R$ 3,229,641	841,625
Non-current
Non-current borrowings before other adjustments	49,166,804	40,122,749
Total
Borrowings, before other adjustments	52,396,445	40,964,374
Foreign \| Panda Bonds - CNH
Non-current
Non-current borrowings	R$ 1,016,331
Foreign \| Panda Bonds - CNH \| Fixed
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	2.80%
Current
Current borrowings before other adjustments	R$ 4,224
Non-current
Non-current borrowings before other adjustments	1,016,331
Total
Borrowings, before other adjustments	1,020,555
Foreign \| Export credits ("export prepayment")
Non-current
Non-current borrowings	R$ 16,283,736
Foreign \| Export credits ("export prepayment") \| SOFR/Fixed
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	5.40%
Current
Current borrowings before other adjustments	R$ 6,236,806	2,690,891
Non-current
Non-current borrowings before other adjustments	16,283,736	14,487,252
Total
Borrowings, before other adjustments	22,520,542	17,178,143
Foreign \| Assets Financing
Non-current
Non-current borrowings	R$ 298,252
Foreign \| Assets Financing \| SOFR
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	3.70%
Current
Current borrowings before other adjustments	R$ 137,300	61,924
Non-current
Non-current borrowings before other adjustments	298,252	220,199
Total
Borrowings, before other adjustments	435,552	282,123
Foreign \| ECA - Export Credit Agency
Non-current
Non-current borrowings	R$ 769,702
Foreign \| ECA - Export Credit Agency \| SOFR
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	6.30%
Current
Current borrowings before other adjustments	R$ 7,297
Non-current
Non-current borrowings before other adjustments	769,702
Total
Borrowings, before other adjustments	776,999
Foreign \| IFC - International Finance Corporation
Non-current
Non-current borrowings	R$ 5,858,208
Foreign \| IFC - International Finance Corporation \| SOFR
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	6.00%
Current
Current borrowings before other adjustments	R$ (12,051)	731
Non-current
Non-current borrowings before other adjustments	5,858,208	2,871,399
Total
Borrowings, before other adjustments	R$ 5,846,157	2,872,130
Foreign \| Other borrowings \| Fixed
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	1.00%
Current
Current borrowings before other adjustments	R$ 4,210	7,903
Non-current
Non-current borrowings before other adjustments	4,455
Total
Borrowings, before other adjustments	8,665	7,903
Domestic (Brazil)
Current
Current borrowings before other adjustments	893,960	1,155,173
Non-current
Non-current borrowings before other adjustments	17,536,656	14,712,846
Total
Borrowings, before other adjustments	18,430,616	15,868,019
Total borrowings	R$ 101,435,531	77,172,692
Domestic (Brazil) \| Export credits ("export prepayment") \| Fixed
LOANS, FINANCING AND DEBENTURES
Annual average interest rate
Current
Current borrowings before other adjustments		791,306
Non-current
Non-current borrowings before other adjustments
Total
Borrowings, before other adjustments		791,306
Domestic (Brazil) \| Assets Financing
Non-current
Non-current borrowings	R$ 56,956
Domestic (Brazil) \| Assets Financing \| CDI
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	18.10%
Current
Current borrowings before other adjustments	R$ 18,427	17,037
Non-current
Non-current borrowings before other adjustments	56,956	71,235
Total
Borrowings, before other adjustments	R$ 75,383	88,272
Domestic (Brazil) \| BNDES –UMBNDES \| BNDES –UMBNDES
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	7.20%
Current
Current borrowings before other adjustments	R$ 157
Non-current
Non-current borrowings before other adjustments	157,555
Non-current borrowings	157,555
Total
Borrowings, before other adjustments	R$ 157,712
Domestic (Brazil) \| BNDES – TJLP \| TJLP
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	8.60%
Current
Current borrowings before other adjustments	R$ 100,556	49,348
Non-current
Non-current borrowings before other adjustments	101,587	199,988
Non-current borrowings	101,587
Total
Borrowings, before other adjustments	R$ 202,143	249,336
Domestic (Brazil) \| BNDES – TLP \| TLP
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	14.80%
Current
Current borrowings before other adjustments	R$ 94,903	57,060
Non-current
Non-current borrowings before other adjustments	4,607,102	3,123,727
Non-current borrowings	4,607,102
Total
Borrowings, before other adjustments	R$ 4,702,005	3,180,787
Domestic (Brazil) \| BNDES \| Fixed
LOANS, FINANCING AND DEBENTURES
Annual average interest rate
Current
Current borrowings before other adjustments		4,020
Non-current
Non-current borrowings before other adjustments
Total
Borrowings, before other adjustments		4,020
Domestic (Brazil) \| BNDES – SELIC \| SELIC
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	14.50%
Current
Current borrowings before other adjustments	R$ 243,223	65,013
Non-current
Non-current borrowings before other adjustments	704,825	857,419
Non-current borrowings	704,825
Total
Borrowings, before other adjustments	R$ 948,048	922,432
Domestic (Brazil) \| BNDES –TR \| BNDES –TR
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	2.20%
Current
Current borrowings before other adjustments	R$ 84
Non-current
Non-current borrowings before other adjustments	70,015
Non-current borrowings	70,015
Total
Borrowings, before other adjustments	70,099
Domestic (Brazil) \| NCE ("Export Credit Notes")
Non-current
Non-current borrowings	R$ 100,000
Domestic (Brazil) \| NCE ("Export Credit Notes") \| CDI
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	18.50%
Current
Current borrowings before other adjustments	R$ 3,027	3,114
Non-current
Non-current borrowings before other adjustments	100,000	100,000
Total
Borrowings, before other adjustments	103,027	103,114
Domestic (Brazil) \| NCR ("Rural producer certificate")
Non-current
Non-current borrowings	R$ 2,000,000
Domestic (Brazil) \| NCR ("Rural producer certificate") \| CDI
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	14.80%
Current
Current borrowings before other adjustments	R$ 312,652	101,739
Non-current
Non-current borrowings before other adjustments	2,000,000	1,998,270
Total
Borrowings, before other adjustments	2,312,652	2,100,009
Domestic (Brazil) \| Debentures
Non-current
Non-current borrowings	R$ 9,738,616
Domestic (Brazil) \| Debentures \| CDI/IPCA
LOANS, FINANCING AND DEBENTURES
Annual average interest rate	15.40%
Current
Current borrowings before other adjustments	R$ 120,931	66,536
Non-current
Non-current borrowings before other adjustments	9,738,616	8,362,207
Total
Borrowings, before other adjustments	R$ 9,859,547	R$ 8,428,743