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Trade Receivables and Reseller Financing - Breakdown of Reseller Financing, Gross of Loss Allowance for Expected Credit Losses (Detail) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Summary of trade receivables [line items] |  |
Reseller financing, gross of loss allowance for expected credit losses | R$ 1,183,312 | R$ 1,165,395
Current [member] |  |
Summary of trade receivables [line items] |  |
Reseller financing, gross of loss allowance for expected credit losses | 770,008 | 787,904
Less than 30 days [member] |  |
Summary of trade receivables [line items] |  |
Reseller financing, gross of loss allowance for expected credit losses | 19,260 | 10,230
31 to 60 days [member] |  |
Summary of trade receivables [line items] |  |
Reseller financing, gross of loss allowance for expected credit losses | 24,290 | 15,237
61-90 days [member] |  |
Summary of trade receivables [line items] |  |
Reseller financing, gross of loss allowance for expected credit losses | 14,373 | 21,200
91-180 days [member] |  |
Summary of trade receivables [line items] |  |
Reseller financing, gross of loss allowance for expected credit losses | 26,685 | 28,989
More than 180 days [member] |  |
Summary of trade receivables [line items] |  |
Reseller financing, gross of loss allowance for expected credit losses | R$ 328,696 | R$ 301,835

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