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Schedule of income tax and social contribution recognized in shareholders' equity (Details) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Income tax and social contribution
Actuarial gains on defined benefit pension plan	[1]	R$ 104,532	R$ 170,604
Estimated losses for deferred income and social contribution tax credits - actuarial gains			(172,520)
Exchange differences on translating foreign operations		(325,350)	(325,350)
Cash flow hedge accounting		1,959,556	1,742,520
Estimated losses for deferred income and social contribution tax credits - cash flow hedge			(1,742,520)
total		R$ 1,738,738	R$ (327,266)
[1] The Company taxes exchange variations on a cash basis to calculate income tax and social contribution on net income.

X

- Definition

The aggregate current and deferred tax relating to particular items that are charged or credited directly to equity, for example: (a) an adjustment to the opening balance of retained earnings resulting from either a change in accounting policy that is applied retrospectively or the correction of an error; and (b) amounts arising on initial recognition of the equity component of a compound financial instrument. [Refer: Deferred tax relating to items credited (charged) directly to equity; Retained earnings; Financial instruments, class [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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-IssueDate 2021-01-01
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X

- Definition

The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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-IssueDate 2021-01-01
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- Definition

The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)]

+ References

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