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Financial Instruments and Risk Management - Schedule of Financial Instruments at Interest Rates (Details) R$ in Millions	Dec. 31, 2024 BRL (R$)
Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets held for managing liquidity risk	R$ 19,374
Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets held for managing liquidity risk	22,326
Not later than one month [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	5
Interest	2
Not later than one month [member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	2,792
Interest	2
Later than one month and not later than three months [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	335
Interest	221
Later than one month and not later than three months [member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	498
Interest	221
Later than three months and not later than one year [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	2,462
Interest	727
Later than three months and not later than one year [member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	2,464
Interest	727
Later than one year and not later than five years [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	5,672
Interest	2,298
Later than one year and not later than five years [member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	5,672
Interest	2,298
Later than five years [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	6,124
Interest	1,528
Later than five years [member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	6,124
Interest	1,528
Loans Financings And Debentures [Member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets held for managing liquidity risk	18,646
Loans Financings And Debentures [Member] | Not later than one month [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal		[1]
Interest
Loans Financings And Debentures [Member] | Later than one month and not later than three months [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	324
Interest	216
Loans Financings And Debentures [Member] | Later than three months and not later than one year [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	2,414
Interest	706
Loans Financings And Debentures [Member] | Later than one year and not later than five years [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	5,354
Interest	2,217
Loans Financings And Debentures [Member] | Later than five years [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	5,902
Interest	1,513
Onerous Concessions [Member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets held for managing liquidity risk	33
Onerous Concessions [Member] | Not later than one month [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal
Interest
Onerous Concessions [Member] | Later than one month and not later than three months [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	1
Interest
Onerous Concessions [Member] | Later than three months and not later than one year [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	3
Interest
Onerous Concessions [Member] | Later than one year and not later than five years [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	14
Interest
Onerous Concessions [Member] | Later than five years [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	15
Interest
Deficit of the pension plan (forluz) [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets held for managing liquidity risk	695
Deficit of the pension plan (forluz) [member] | Not later than one month [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	5
Interest	2
Deficit of the pension plan (forluz) [member] | Later than one month and not later than three months [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	10
Interest	5
Deficit of the pension plan (forluz) [member] | Later than three months and not later than one year [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	45
Interest	21
Deficit of the pension plan (forluz) [member] | Later than one year and not later than five years [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	304
Interest	81
Deficit of the pension plan (forluz) [member] | Later than five years [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	207
Interest	15
Suppliers [Member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets held for managing liquidity risk	2,952
Suppliers [Member] | Not later than one month [member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	2,787
Interest
Suppliers [Member] | Later than one month and not later than three months [member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	163
Interest
Suppliers [Member] | Later than three months and not later than one year [member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal	2
Interest
Suppliers [Member] | Later than one year and not later than five years [member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal
Interest
Suppliers [Member] | Later than five years [member] | Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Principal
Interest
[1] The lease payment flow is presented in note 17.

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Financial assets held for managing liquidity risk, interest.

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph B11E
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B11E&doctype=Appendix&subtype=B
-URIDate 2024-03-27

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