IMPAIRMENT (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
IfrsStatementLineItems [Line Items]
Book value	R$ 4,378,615	R$ 4,340,252
TLSA [Member]
IfrsStatementLineItems [Line Items]
Book value	R$ 1,796,451
Cash Flow Period	2025 to 2057 (end of concession)
Gross Margin	Estimated based on market study to capture loads and operating costs according to market trend studies
Cost estimate	Costs based on study and market trends and simulations that calculate diesel costs, main operating cost
Perpetuity growth rate	No growth rate was considered due to the projected model until the end of the concession in 2057
Measurement of recoverable value	VIU
Range of prices projected for rail transport	Market-based data
Sensitivity of key assumptions	An 18% reduction in sales volume would result in the estimated recoverable amount equal to the carrying amount of this asset
Test result	The recoverable amount of the investment is higher than its book values, and no impairment loss is recognized
TLSA [Member] \| Bottom of range [member]
IfrsStatementLineItems [Line Items]
Discount rate, in real terms	5.56%
TLSA [Member] \| Top of range [member]
IfrsStatementLineItems [Line Items]
Discount rate, in real terms	6.68%

The amount by which a cash-generating unit's (group of units') recoverable amount exceeds its carrying amount. [Refer: Carrying amount [member]; Total for all cash-generating units [member]]

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The description of the basis on which the cash-generating unit's (group of units') recoverable amount has been determined (ie value in use or fair value less costs of disposal). [Refer: Total for all cash-generating units [member]]

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The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Total for all cash-generating units [member]]

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The description of the justification for using any growth rate to extrapolate cash flow projections that exceeds the long-term average growth rate for the products, industries or country (countries) in which the entity operates, or for the market to which a cash-generating unit (group of units) is dedicated. [Refer: Total for all cash-generating units [member]]

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The description of key assumptions on which management has based its cash flow projections for the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). Key assumptions are those to which the unit's (group of units') recoverable amount is most sensitive. [Refer: Total for all cash-generating units [member]]

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