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CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Profit or loss [abstract]      
NET INCOME FOR THE YEAR R$ 4,094 R$ 3,753 R$ 2,865
Items that will not be reclassified to profit or loss in subsequent periods      
Post retirement liabilities - remeasurement of obligations of the defined benefit plans 697 301 (10)
Income tax and social contribution tax on remeasurement of defined benefit plans (Note 10c) (237) (102) 4
Other comprehensive income 1 (1)
Equity gain (loss) on other comprehensive income in subsidiary and jointly controlled entity  461 199 (7)
COMPREHENSIVE INCOME FOR THE YEAR  4,555 3,952 2,858
Total of comprehensive income for the year attributed to:      
Equity holders of the parent 4,553 3,950 2,857
Non-controlling interests R$ 2 R$ 2 R$ 1