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SHARE-BASED COMPENSATION PLAN - Long term compensation plans ("PS and SAR") (Details) | 12 Months Ended
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Dec. 31, 2022 EquityInstruments item R$ / shares | Dec. 31, 2021 EquityInstruments R$ / shares | Dec. 31, 2020 EquityInstruments
SHARE-BASED COMPENSATION PLAN |  |  |
Number of share-based compensation plans | item | 3 |  |
PSO |  |  |
Number of shares |  |  |
Opening balance | 5,415,754 | 5,772,356 | 5,996,437
Granted during of the year | 4,152,200 | 1,906,343 | 1,770,384
Exercised | (1,474,506) | (1,860,334) | (1,789,413)
Exercised due to resignation | (175,552) | (86,196) | (21,253)
Abandoned / cancelled due to resignation | (334,711) | (316,415) | (183,799)
Closing balance | 7,583,185 | 5,415,754 | 5,772,356
Average exercise price | R$ / shares | R$ 48.79 | R$ 60.30 |
SAR and PLUS | PSO |  |  |
SHARE-BASED COMPENSATION PLAN |  |  |
Required investment, as a percentage of total phantom share options at grant date | 5.00% |  |
Required investment, as a percentage of total phantom share options three years after grant date | 20.00% |  |
Phantom shares measurement period | 90 days |  |
SAR and PLUS | PSO | Minimum |  |  |
SHARE-BASED COMPENSATION PLAN |  |  |
Vesting period | 3 years |  |
SAR and PLUS | PSO | Maximum |  |  |
SHARE-BASED COMPENSATION PLAN |  |  |
Vesting period | 5 years |  |

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