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Financial Assets and Liabilities - Summary of Trade Receivables (Detail) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of Trade Receivables [line items] |  |
Trade receivables | R$ 2,745,853 | R$ 2,033,441
Current | 2,580,776 | 2,007,140
Non-current | 165,077 | 26,301
Cost [member] |  |
Disclosure of Trade Receivables [line items] |  |
Trade receivables | 2,860,905 | 2,169,465
Expected credit losses [member] |  |
Disclosure of Trade Receivables [line items] |  |
Trade receivables | (115,052) | (136,024)
Unbilled receivables |  |
Disclosure of Trade Receivables [line items] |  |
Trade receivables | 975,588 | 667,793
Domestic - Brazilian Reais [member] |  |
Disclosure of Trade Receivables [line items] |  |
Trade receivables | 1,810,867 | 1,432,805
Export - Foreign currency [member] |  |
Disclosure of Trade Receivables [line items] |  |
Trade receivables | R$ 74,450 | R$ 68,867

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