COMPANY'S OPERATIONS - Dividends (Details) - BRL (R$) R$ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
COMPANY'S OPERATIONS
Amount of interim dividends declared	R$ 1,500,000	R$ 2,350,000
Amount of supplementary dividends approved		R$ 799,903

The amount of additional proposed supplementary dividends.

No definition available.

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