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Trade Receivables and Reseller Financing - Summary of Movements in the Allowance Losses on Doubtful Debts (Detail) - BRL (R$) R$ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Reseller Financing - Ipiranga [member] |  |
Disclosure of financial assets [line items] |  |
Beginning balance | R$ 156,006 | R$ 139,699
Additions | 74,745 | 30,601
Reversals | (29,791) | (14,294)
Write-offs | (3,949) |
Ending balance | 197,011 | 156,006
Trade receivables [member] |  |
Disclosure of financial assets [line items] |  |
Beginning balance | 404,886 | 385,080
Additions | 194,220 | 189,192
Reversals | (203,994) | (119,640)
Write-offs | (13,016) | (49,746)
Ending balance | R$ 382,096 | R$ 404,886

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- Definition The amount of additional allowance for credit losses of financial assets recognised in profit or loss. [Refer: Allowance account for credit losses of financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The amount of impairment loss on financial assets. [Refer: Financial assets; Impairment loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_20_e&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The decrease in an allowance account for credit losses of financial assets resulting from the reversal of impairment. [Refer: Allowance account for credit losses of financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Details
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- Details
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