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

An entity’s own equity instruments, held by the entity or other members of the consolidated group.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 78
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_78_e&doctype=Standard
-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 32
-IssueDate 2022-03-24
-Paragraph 34
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=32&code=ifrs-tx-2022-en-r&anchor=para_34&doctype=Standard
-URIDate 2022-03-24

Name:	ifrs-full_TreasuryShares
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Number of shares issued under share-based payment arrangement.

No definition available.

Name:	suz_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
Namespace Prefix:	suz_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

No definition available.

Name:	suz_IfrsStockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	suz_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	suz_IfrsStockRepurchaseProgramPeriodInForce
Namespace Prefix:	suz_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the market value of treasury shares.

No definition available.

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

The nominal value of capital issued from share-based compensation plan.

No definition available.

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

Price of shares issued under share-based payment arrangement.

No definition available.

Name:	suz_ShareBasedCompensationArrangementByShareBasedPaymentAwardPricePerShareOfSharesIssuedInPeriod
Namespace Prefix:	suz_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

The amount of transaction costs from share repurchase transactions.

No definition available.

Name:	suz_ShareRepurchaseTransactionCosts
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The price paid per share to purchase the targeted number of shares.

No definition available.

Name:	suz_ShareRepurchasesPricePaidPerShare
Namespace Prefix:	suz_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

Market value of shares repurchased during the period.

No definition available.

Name:	suz_StockRepurchasedDuringPeriodMarketValue
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date.

No definition available.

Name:	suz_TreasuryStockNumberOfShares
Namespace Prefix:	suz_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Equity impact of the value of stock that has been repurchased during the period, including transaction costs and has not been retired and is not held in treasury.

No definition available.

Name:	suz_ValueOfStockRepurchasedDuringPeriodNetOfTransactionCosts
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The weighted average price per share of treasury shares.

No definition available.

Name:	suz_WeightedAveragePricePerShareTreasuryShares
Namespace Prefix:	suz_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

Name:	suz_IfrsShareRepurchaseProgramAxis=suz_RepurchaseProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	suz_IfrsShareRepurchaseProgramAxis=suz_ShareRepurchaseProgramOctober2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	suz_IfrsShareRepurchaseProgramAxis=suz_ShareRepurchaseProgramMay2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	suz_IfrsShareRepurchaseProgramAxis=suz_ShareRepurchaseProgramJuly2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: