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TRADE ACCOUNTS RECEIVABLE - Main customers (Details)	Dec. 31, 2019 customer
Credit risk
Disclosure of nature and extent of risks arising from financial instruments [line items]
Number of customers representing greater than 10% of net sales of pulp	1

X

- 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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X

- Definition

Number of customers in concentration of risk analysis representing 10% or greater of total net sales.

+ References

No definition available.

+ Details

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Namespace Prefix:	suzby_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: