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

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

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury.

No definition available.

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

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

No definition available.

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

Number of shares of common and preferred stock retired from treasury during the period.

No definition available.

Name:	suz_IfrsTreasuryStockSharesRetired
Namespace Prefix:	suz_
Data Type:	xbrli:sharesItemType
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 cash value of shares repurchased during the period.

No definition available.

Name:	suz_TreasuryStockCashValueOfSharesRepurchased
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

The weighted average price per share of treasury shares.

No definition available.