EMPLOYEE BENEFITS (Details 1) - BRL (R$) R$ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
IfrsStatementLineItems [Line Items]
Defined benefit obligation at January 1	R$ (2,166.2)	R$ (1,954.6)
Others
Total	(1,982.8)	(2,166.2)	R$ (1,954.6)
Present value of defined benefit obligation [member]
IfrsStatementLineItems [Line Items]
Defined benefit obligation at January 1	(6,591.3)	(6,282.7)	(6,397.5)
Recognized in the income statement
Service costs	(37.8)	(43.3)	(24.1)
Interest costs	(383.7)	(382.1)	(413.4)
Interest income
Administrative costs
Curtailments, settlements and other
Subtotal	(421.5)	(425.4)	(437.5)
Included in the comprehensive income for the period.
Gains/(losses) on settlements or reductions in benefits	3.9	3.7	2.5
Actuarial gains/(losses) - demographic assumptions			11.5
Actuarial gains/(losses) - financial assumptions	32.3	253.1	(297.0)
Experience adjustments	(147.0)	85.7	91.2
Effects of exchange differences	387.7	(750.7)	216.7
Expected return, excluding interest income
Subtotal	276.9	(408.2)	24.9
Others
Contributions by plan participants	(4.4)	(4.8)	(4.2)
Reclassifications	9.9	0.3
Contributions by employer
Transfers
Benefits paid, excluding administrative costs	556.2	529.5	531.6
Subtotal	561.7	525.0	527.4
Total	(6,174.2)	(6,591.3)	(6,282.7)
Plan assets [member]
IfrsStatementLineItems [Line Items]
Defined benefit obligation at January 1	4,943.5	4,604.6	4,543.3
Recognized in the income statement
Service costs
Interest costs
Interest income	316.6	281.3	318.1
Administrative costs	(9.2)	(8.3)	(5.2)
Curtailments, settlements and other	4.0	3.5	(4.8)
Subtotal	311.4	276.5	308.1
Included in the comprehensive income for the period.
Gains/(losses) on settlements or reductions in benefits
Actuarial gains/(losses) - demographic assumptions
Actuarial gains/(losses) - financial assumptions
Experience adjustments
Effects of exchange differences	(250.8)	450.9	(102.0)
Expected return, excluding interest income	86.5	(103.6)	101.7
Subtotal	(164.3)	347.3	(0.3)
Others
Contributions by plan participants	4.4	4.6	4.6
Reclassifications
Contributions by employer	236.5	240.3	280.5
Transfers	(42.4)
Benefits paid, excluding administrative costs	(555.3)	(529.8)	(531.6)
Subtotal	(356.8)	(284.9)	(246.5)
Total	4,733.8	4,943.5	4,604.6
Effect of asset ceiling [member]
IfrsStatementLineItems [Line Items]
Defined benefit obligation at January 1	(367.6)	(182.6)	(163.3)
Recognized in the income statement
Service costs
Interest costs	(40.5)	(16.8)	(16.2)
Interest income
Administrative costs
Curtailments, settlements and other
Subtotal	(40.5)	(16.8)	(16.2)
Included in the comprehensive income for the period.
Gains/(losses) on settlements or reductions in benefits
Actuarial gains/(losses) - demographic assumptions
Actuarial gains/(losses) - financial assumptions	10.5	(168.2)	(3.1)
Experience adjustments
Effects of exchange differences
Expected return, excluding interest income
Subtotal	10.5	(168.2)	(3.1)
Others
Contributions by plan participants
Reclassifications
Contributions by employer
Transfers
Benefits paid, excluding administrative costs
Subtotal
Total	(397.6)	(367.6)	(182.6)
Net Defined Benefit Liability Assets [Member]
IfrsStatementLineItems [Line Items]
Defined benefit obligation at January 1	(2,015.4)	(1,860.7)	(2,017.5)
Recognized in the income statement
Service costs	(37.8)	(43.3)	(24.1)
Interest costs	(424.2)	(398.9)	(429.6)
Interest income	316.6	281.3	318.1
Administrative costs	(9.2)	(8.3)	(5.2)
Curtailments, settlements and other	4.0	3.5	(4.8)
Subtotal	(150.6)	(165.7)	(145.6)
Included in the comprehensive income for the period.
Gains/(losses) on settlements or reductions in benefits	3.9	3.7	2.5
Actuarial gains/(losses) - demographic assumptions			11.5
Actuarial gains/(losses) - financial assumptions	42.8	84.9	(300.1)
Experience adjustments	(147.0)	85.7	91.2
Effects of exchange differences	136.9	(299.8)	114.7
Expected return, excluding interest income	86.5	(103.6)	101.7
Subtotal	123.1	(229.1)	21.5
Others
Contributions by plan participants		(0.2)	0.4
Reclassifications	9.9	0.3
Contributions by employer	236.5	240.3	280.5
Transfers	(42.4)
Benefits paid, excluding administrative costs	0.9	(0.3)
Subtotal	204.9	240.1	280.9
Total	R$ (1,838.0)	R$ (2,015.4)	R$ (1,860.7)

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The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in demographic assumptions that result in remeasurements of the net defined benefit liability (asset). Demographic assumptions deal with matters such as: (a) mortality; (b) rates of employee turnover, disability and early retirement; (c) the proportion of plan members with dependants who will be eligible for benefits; (d) the proportion of plan members who will select each form of payment option available under the plan terms; and (e) claim rates under medical plans. [Refer: Net defined benefit liability (asset)]

+ References

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The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions that result in remeasurements of the net defined benefit liability (asset). Financial assumptions deal with items such as: (a) the discount rate; (b) benefit levels, excluding any cost of the benefits to be met by employees, and future salary; (c) in the case of medical benefits, future medical costs, including claim handling costs (ie the costs that will be incurred in processing and resolving claims, including legal and adjuster's fees); and (d) taxes payable by the plan on contributions relating to service before the reporting date or on benefits resulting from that service. [Refer: Net defined benefit liability (asset)]

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The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from experience adjustments that result in remeasurements of the net defined benefit liability (asset). Experience adjustments deal with the effects of differences between the previous actuarial assumptions and what has actually occurred. [Refer: Net defined benefit liability (asset)]

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The decrease (increase) in net defined benefit liability (asset) resulting from contributions to a defined benefit plan by the employer. [Refer: Net defined benefit liability (asset); Defined benefit plans [domain]]

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The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)]

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The decrease (increase) in the net defined benefit liability (asset) resulting from settlements. Settlements are transactions that eliminate all further legal or constructive obligations for part or all of the benefits provided under a defined benefit plan, other than a payment of benefits to, or on behalf of, employees that is set out in the terms of the plan and included in the actuarial assumptions. [Refer: Net defined benefit liability (asset); Defined benefit plans [domain]; Actuarial assumptions [domain]]

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The increase (decrease) in the net defined benefit liability (asset) resulting from changes in foreign exchange rates. [Refer: Net defined benefit liability (asset)]

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The increase (decrease) in the net defined benefit liability (asset) resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Net defined benefit liability (asset)]

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The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)]

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The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]]

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