Name:	ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix:	ifrs-full_
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The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_47_b&doctype=Standard
-URIDate 2018-03-16

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45&doctype=Standard
-URIDate 2018-03-16

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
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Period Type:	duration

The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement.

Name:	ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

The weighted average exercise price of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement. [Refer: Weighted average [member]]

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

n/a

No definition available.

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Namespace Prefix:	suzby_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Period which the right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The number of other equity instruments (ie other than share options) exercised due to dismissal in a share-based payment arrangement.

No definition available.

Name:	suzby_NumberOfOtherEquityInstrumentsExercisedDueToDismissalInShareBasedPaymentArrangement
Namespace Prefix:	suzby_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

The number of other equity instruments (ie other than share options) forfeited due to dismissal in a share-based payment arrangement.

No definition available.

Name:	suzby_NumberOfOtherEquityInstrumentsForfeitedDueToDismissalInShareBasedPaymentArrangement
Namespace Prefix:	suzby_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

The number of other equity instruments issued in intercompany transfers (ie other than share options) granted in a share-based payment arrangement.

No definition available.

Name:	suzby_NumberOfOtherEquityInstrumentsIssuedInIntercompanyTransfersInShareBasedPaymentArrangement
Namespace Prefix:	suzby_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

The number of share-based compensation plans offered by the Company.

No definition available.

Name:	suzby_NumberOfShareBasedCompensationPlans
Namespace Prefix:	suzby_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The amount of required investment, as a percentage of the total amount corresponding to the number of options of phantom shares at the grant date.

No definition available.

Name:	suzby_RequiredInvestmentAsPercentageOfTotalPhantomShareOptionsAtGrantDate
Namespace Prefix:	suzby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The amount of required investment, as a percentage of the total amount corresponding to the number of options of phantom shares three years after the grant date.

No definition available.

Name:	suzby_RequiredInvestmentAsPercentageOfTotalPhantomShareOptionsThreeYearsAfterGrantDate
Namespace Prefix:	suzby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The weighted average exercise price of other equity instruments (ie other than share options) exercised due to dismissal in a share-based payment arrangement.

No definition available.

Name:	suzby_WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisedDueToDismissalInShareBasedPaymentArrangement
Namespace Prefix:	suzby_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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Namespace Prefix:
Data Type:	na
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Name:	suzby_IfrsPlanNameAxis=suzby_StockAppreciationRights2017AndStockAppreciationRightsPlus2017Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
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