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Financial instruments - Liquidity risk management (Details) - Liquidity risk [member] - BRL (R$) R$ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
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Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | R$ 106,715,757 | R$ 93,045,196
Financial Liabilities, Undiscounted Cash Flows | 143,249,522 | 126,570,983
2024 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 21,130,774 | 15,929,888
2025 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 10,349,756 | 15,384,365
Later than two years and not later than five years [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 46,463,461 | 35,377,689
Later than five years [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 65,305,531 | 59,879,041
Trade accounts payable |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | 5,058,959 | 5,572,219
Financial Liabilities, Undiscounted Cash Flows | 5,058,959 | 5,572,219
Trade accounts payable | 2024 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 5,058,959 | 5,572,219
Loans, financing and debentures |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | 88,624,374 | 77,172,692
Financial Liabilities, Undiscounted Cash Flows | 118,976,266 | 105,526,852
Loans, financing and debentures | 2024 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 13,708,238 | 7,648,237
Loans, financing and debentures | 2025 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 8,967,446 | 12,983,542
Loans, financing and debentures | Later than two years and not later than five years [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 42,773,201 | 31,355,362
Loans, financing and debentures | Later than five years [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 53,527,381 | 53,539,711
Leases |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | 6,604,352 | 6,243,782
Financial Liabilities, Undiscounted Cash Flows | 11,631,398 | 11,021,519
Leases | 2024 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 1,230,619 | 1,172,568
Leases | 2025 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 1,113,432 | 1,045,795
Leases | Later than two years and not later than five years [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 2,930,245 | 2,743,793
Leases | Later than five years [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 6,357,102 | 6,059,363
Liabilities for assets acquisitions and subsidiaries |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | 211,226 | 187,187
Financial Liabilities, Undiscounted Cash Flows | 210,946 | 215,891
Liabilities for assets acquisitions and subsidiaries | 2024 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 91,922 | 94,948
Liabilities for assets acquisitions and subsidiaries | 2025 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 18,624 | 18,314
Liabilities for assets acquisitions and subsidiaries | Later than two years and not later than five years [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 85,035 | 87,520
Liabilities for assets acquisitions and subsidiaries | Later than five years [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 15,365 | 15,109
Derivative Liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | 5,732,329 | 2,436,072
Financial Liabilities, Undiscounted Cash Flows | 6,887,436 | 2,801,258
Derivative Liabilities | 2024 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 615,555 | 66,433
Derivative Liabilities | 2025 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 191,218 | 1,278,953
Derivative Liabilities | Later than two years and not later than five years [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 674,980 | 1,191,014
Derivative Liabilities | Later than five years [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 5,405,683 | 264,858
Dividends and interests on own capital payable |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | 3,010 | 1,316,528
Financial Liabilities, Undiscounted Cash Flows | 3,010 | 1,316,528
Dividends and interests on own capital payable | 2024 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 3,010 | 1,316,528
Other liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | 481,507 | 116,716
Financial Liabilities, Undiscounted Cash Flows | 481,507 | 116,716
Other liabilities | 2024 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | 422,471 | 58,955
Other liabilities | 2025 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial Liabilities, Undiscounted Cash Flows | R$ 59,036 | R$ 57,761

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- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) 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 deliver 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, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are 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. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_25&doctype=Standard -URIDate 2023-03-23 + Details
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