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EMPLOYEE BENEFIT PLANS - Defined Contribution Plans (Details) - BRL (R$) R$ in Thousands | 6 Months Ended | 12 Months Ended
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Jun. 30, 2020 | Dec. 31, 2019
Suzano Prev pension plan |  |
Defined contribution plans |  |
Employer contributions | R$ 3,505 | R$ 5,993
FUNSEJEM |  |
Defined contribution plans |  |
Employer contributions | R$ 4,363 | R$ 9,920

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- Definition The amount of employer contributions to retirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2019-01-01 -Paragraph 35 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=26&code=ifrs-tx-2019-en-r&anchor=para_35_b_i&doctype=Standard -URIDate 2019-03-27 + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |