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Financial Instruments - Summary of the financial assets and financial liabilities measured at fair value (Detail) - BRL (R$) R$ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	R$ 14,141,119	R$ 13,947,322
Financial assets, fair value	14,141,119	13,947,322
Financial liabilities, carrying value	19,444,439	18,188,573
Financial liabilities, fair value	19,184,180	17,995,389
Level 3 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	42,186	112,196	R$ 0
Financial liabilities at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	6,200,103	7,029,386
Financial liabilities at amortised cost, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	13,244,336	11,159,187
Cash and bank [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	405,840	125,152
Financial assets, fair value	405,840	125,152
Cash and cash equivalents, Securities and funds in local currency [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	1,286,152	5,476,726
Financial assets, fair value	1,286,152	5,476,726
Cash and cash equivalents, Securities and funds in foreign currency [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	379,601	323,810
Financial assets, fair value	379,601	323,810
Financial investments, Securities and funds in local currency [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	2,271,979	82,592
Financial assets, fair value	2,271,979	82,592
Financial investments, Securities and funds in foreign currency [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	2,854,126
Financial assets, fair value	2,854,126
Derivative instruments [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	833,986	1,162,283
Financial assets, fair value	833,986	1,162,283
Energy trading futures contracts [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	404,695
Financial assets, fair value	404,695
Trade Receivables [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	3,913,004	4,269,473
Financial assets, fair value	3,913,004	4,269,473
Reseller Financing [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	1,404,883	1,189,886
Financial assets, fair value	1,404,883	1,189,886
Other receivables and other assets [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	386,853	393,036
Financial assets, fair value	386,853	393,036
Trade receivables - sale of subsidiaries
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value		924,364
Financial assets, fair value		924,364
Financing [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	9,089,176	6,034,309
Financial liabilities, fair value	8,871,550	5,853,165
Financing [member] | Financial liabilities at fair value through profit or loss, category [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	2,085,149	1,584,452
Financing [member] | Financial liabilities at amortised cost, category [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	7,004,027	4,449,857
Debentures [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	4,771,334	5,106,973
Financial liabilities, fair value	4,728,701	5,094,933
Debentures [member] | Financial liabilities at fair value through profit or loss, category [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	3,468,647	4,618,704
Debentures [member] | Financial liabilities at amortised cost, category [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	1,302,687	488,269
Derivative instruments [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	441,600	626,735
Financial liabilities, fair value	441,600	626,735
Derivative instruments [member] | Financial liabilities at fair value through profit or loss, category [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	441,600	626,735
Derivative instruments [member] | Financial liabilities at amortised cost, category [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	0	0
Energy trading futures contracts [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	114,776
Financial liabilities, fair value	114,776
Energy trading futures contracts [member] | Financial liabilities at fair value through profit or loss, category [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	114,776
Energy trading futures contracts [member] | Financial liabilities at amortised cost, category [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	0
Trade payables [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	3,518,385	4,682,671
Financial liabilities, fair value	3,518,385	4,682,671
Trade payables [member] | Financial liabilities at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	0	0
Trade payables [member] | Financial liabilities at amortised cost, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	3,518,385	4,682,671
Trade payables – reverse factoring [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	1,014,504	1,039,366
Financial liabilities, fair value	1,014,504	1,039,366
Trade payables – reverse factoring [member] | Financial liabilities at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	0	0
Trade payables – reverse factoring [member] | Financial liabilities at amortised cost, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	1,014,504	1,039,366
Subscription warrant – indemnification [member] | Level 1 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	47,745	87,299
Financial liabilities, fair value	47,745	87,299
Subscription warrant – indemnification [member] | Financial liabilities at fair value through profit or loss, category [member] | Level 1 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	47,745	87,299
Subscription warrant – indemnification [member] | Financial liabilities at amortised cost, category [member] | Level 1 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	0	0
Financial liabilities of customers [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	180,225	308,934
Financial liabilities, fair value	180,225	308,934
Financial liabilities of customers [member] | Financial liabilities at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	0	0
Financial liabilities of customers [member] | Financial liabilities at amortised cost, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	180,225	308,934
Contingent consideration [member] | Level 3 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	95,174	112,196
Financial liabilities, fair value	95,174	112,196
Contingent consideration [member] | Financial liabilities at fair value through profit or loss, category [member] | Level 3 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	42,186	112,196
Contingent consideration [member] | Financial liabilities at amortised cost, category [member] | Level 3 [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	52,988	0
Other Payables [Member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	171,520	190,090
Financial liabilities, fair value	171,520	190,090
Other Payables [Member] | Financial liabilities at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	0	0
Other Payables [Member] | Financial liabilities at amortised cost, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, carrying value	171,520	190,090
Financial assets at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	3,510,660	1,244,875
Financial assets at fair value through profit or loss, category [member] | Cash and bank [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	0	0
Financial assets at fair value through profit or loss, category [member] | Cash and cash equivalents, Securities and funds in local currency [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	0	0
Financial assets at fair value through profit or loss, category [member] | Cash and cash equivalents, Securities and funds in foreign currency [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	0	0
Financial assets at fair value through profit or loss, category [member] | Financial investments, Securities and funds in local currency [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	2,271,979	82,592
Financial assets at fair value through profit or loss, category [member] | Financial investments, Securities and funds in foreign currency [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	0
Financial assets at fair value through profit or loss, category [member] | Derivative instruments [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	833,986	1,162,283
Financial assets at fair value through profit or loss, category [member] | Energy trading futures contracts [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	404,695
Financial assets at fair value through profit or loss, category [member] | Trade Receivables [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	0	0
Financial assets at fair value through profit or loss, category [member] | Reseller Financing [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	0	0
Financial assets at fair value through profit or loss, category [member] | Other receivables and other assets [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	0	0
Financial assets at fair value through profit or loss, category [member] | Trade receivables - sale of subsidiaries
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value		0
Financial assets at amortised cost, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	10,630,459	12,702,447
Financial assets at amortised cost, category [member] | Cash and bank [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	405,840	125,152
Financial assets at amortised cost, category [member] | Cash and cash equivalents, Securities and funds in local currency [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	1,286,152	5,476,726
Financial assets at amortised cost, category [member] | Cash and cash equivalents, Securities and funds in foreign currency [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	379,601	323,810
Financial assets at amortised cost, category [member] | Financial investments, Securities and funds in local currency [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	0	0
Financial assets at amortised cost, category [member] | Financial investments, Securities and funds in foreign currency [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	2,854,126
Financial assets at amortised cost, category [member] | Derivative instruments [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	0	0
Financial assets at amortised cost, category [member] | Energy trading futures contracts [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	0
Financial assets at amortised cost, category [member] | Trade Receivables [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	3,913,004	4,269,473
Financial assets at amortised cost, category [member] | Reseller Financing [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	1,404,883	1,189,886
Financial assets at amortised cost, category [member] | Other receivables and other assets [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value	R$ 386,853	393,036
Financial assets at amortised cost, category [member] | Trade receivables - sale of subsidiaries
Disclosure of detailed information about financial instruments [line items]
Financial assets, carrying value		R$ 924,364

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities]

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