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23. SHAREHOLDERS' EQUITY (Details 3) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of classes of share capital [abstract]
Profit for the year	R$ 3,794,295	R$ 1,789,067	R$ 5,074,136
Weighted average number of shares	1,380,114,547	1,380,114,547	1,373,250,595
Basic and diluted earnings (loss) per share	R$ 2.74926	R$ 1.29632	R$ 3.69498

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- Definition

The amount of earnings per share when the basic and diluted measurements are equal. [Refer: Basic earnings (loss) per share; Diluted earnings (loss) per share]

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- Definition

The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

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