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LEASE - Lease liabilities (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
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Lease Liabilities |  |  |
Adjustment to lease liabilities upon adoption of new accounting standard |  | R$ 18,225 |
Present value of liabilities | R$ 3,984,070 |  | R$ 0
IFRS 16, Leases |  |  |
Lease Liabilities |  |  |
Adjustment to lease liabilities upon adoption of new accounting standard |  |  | R$ 18,225
Present value of liabilities |  | R$ 3,428,897 |
Lands and Farms | IFRS 16, Leases |  |  |
Lease Liabilities |  |  |
Average rate - % per annual |  | 10.89% |
Present value of liabilities |  | R$ 1,761,273 |
Machinery and equipment | IFRS 16, Leases |  |  |
Lease Liabilities |  |  |
Average rate - % per annual |  | 10.15% |
Present value of liabilities |  | R$ 214,569 |
Buildings | IFRS 16, Leases |  |  |
Lease Liabilities |  |  |
Average rate - % per annual |  | 10.92% |
Present value of liabilities |  | R$ 41,391 |
Ships and boats | IFRS 16, Leases |  |  |
Lease Liabilities |  |  |
Average rate - % per annual |  | 10.76% |
Present value of liabilities |  | R$ 1,410,474 |
Vehicles | IFRS 16, Leases |  |  |
Lease Liabilities |  |  |
Average rate - % per annual |  | 8.99% |
Present value of liabilities |  | R$ 1,190 |

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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The weighted average lessee's incremental borrowing rate applied to lease liabilities recognised in the statement of financial position at the date of initial application of IFRS 16. The incremental borrowing rate is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph C12 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_C12_a&doctype=Appendix&subtype=C -URIDate 2019-03-27 + Details
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Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition The amounts recognized as operating lease liabilities due to the initial application of IFRS 16 for the remaining balances of agreements previously classified as financial leases under IAS17. + References No definition available. + Details
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Namespace Prefix: | suzby_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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