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Risks and Financial Instruments - Summary of foreign exchange hedging instruments designated as fair value hedge (Detail) R$ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 BRL (R$)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 BRL (R$)	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Ipiranga [member]
Disclosure of detailed information about hedges [line items]
Notional amount | $					$ 309,113	$ 188,621
Result of hedging instruments - gain/(loss) - R$	R$ (891,223)		R$ (129,670)
Adjustment of inventory fair value - US$ | $		$ 34,126		$ (4,352)
Foreign exchange hedging instruments [member]
Disclosure of detailed information about hedges [line items]
Notional amount | $					$ 221,339	$ 175,000
Result of hedging instruments - gain/(loss) - R$	(142,863)		21,812
Fair value adjustment of debt - R$	28,000		47,064
Financial result of the debt - R$	R$ 28,291		R$ (105,059)
Average effective cost - DI %	107.00%	107.00%	104.90%	104.90%
Foreign exchange swap two [member]
Disclosure of detailed information about hedges [line items]
Notional amount	R$ 9,709		R$ 0
Result of hedging instruments - gain/(loss) - R$	2,573		0
Fair value adjustment of debt - R$	R$ (8)		R$ 0
Average effective cost - DI %	112.00%	112.00%	0.00%	0.00%
Interest rate hedging instruments [member]
Disclosure of detailed information about hedges [line items]
Notional amount	R$ 3,226,054		R$ 2,226,054
Result of hedging instruments - gain/(loss) - R$	(143,762)		(17,922)
Fair value adjustment of debt - R$	(44,312)		166,374
Financial result of the debt - R$	R$ (293,955)		R$ (245,710)
Average effective cost - DI %	102.90%	102.90%	102.00%	102.00%
Interest rate swap contract one [member]
Disclosure of detailed information about hedges [line items]
Notional amount	R$ 90,000		R$ 90,000
Result of hedging instruments - gain/(loss) - R$	(5,069)		(10,088)
Fair value adjustment of debt - R$	(486)		11,756
Financial result of the debt - R$	R$ (6,330)		R$ (5,914)
Average effective cost - DI %	99.90%	99.90%	99.90%	99.90%

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The gain (loss) on the change in fair value of the hedging instrument used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 24A
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_24A_c&doctype=Standard
-URIDate 2022-03-24

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- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2022-03-24

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- Definition

The amount of gain (loss) related to fair value adjustment of debt.

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- Definition

The amount of gain (loss) related to fair value adjustment of inventories.

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- Definition

The amount of interest income (expense) on financial liabilities designated at fair value through profit or loss.

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- Definition

The percentage of average effective cost of hedging instruments designated as fair value hedge.

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