v3.26.1
Taxes - Schedule of Realization and Present Value of Tax Credits and From Provision for Deferred Income Tax and Social Contribution (Details) - BRL (R$)
R$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]      
Temporary differences R$ 74,897    
Temporary differences, percentage 100.00%    
Tax loss / social contribution loss carryforwards R$ 513    
Tax loss / social contribution loss carryforwards, percentage 100.00%    
Total R$ 75,410 R$ 70,206 R$ 61,668
Total, percentage 100.00%    
Deferred tax liabilities R$ (12,415)    
Deferred tax liabilities, percentage 100.00%    
Net deferred taxes R$ 62,995    
Net deferred taxes, percentage 100.00%    
Present value of temporary differences R$ 60,235    
Present value of tax loss /social contribution loss carryforwards 484    
Present value of total 60,719    
Present value of deferred taxes liabilities (8,878)    
Present value of net deferred taxes 51,841    
2026      
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]      
Temporary differences R$ 17,848    
Temporary differences, percentage 23.80%    
Tax loss / social contribution loss carryforwards R$ 508    
Tax loss / social contribution loss carryforwards, percentage 99.00%    
Total R$ 18,356    
Total, percentage 24.30%    
Deferred tax liabilities R$ (1,139)    
Deferred tax liabilities, percentage 9.20%    
Net deferred taxes R$ 17,217    
Net deferred taxes, percentage 27.30%    
2027      
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]      
Temporary differences R$ 10,849    
Temporary differences, percentage 14.50%    
Tax loss / social contribution loss carryforwards R$ 0    
Tax loss / social contribution loss carryforwards, percentage 0.00%    
Total R$ 10,849    
Total, percentage 14.40%    
Deferred tax liabilities R$ (478)    
Deferred tax liabilities, percentage 3.90%    
Net deferred taxes R$ 10,371    
Net deferred taxes, percentage 16.50%    
2028      
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]      
Temporary differences R$ 7,658    
Temporary differences, percentage 10.20%    
Tax loss / social contribution loss carryforwards R$ 1    
Tax loss / social contribution loss carryforwards, percentage 0.20%    
Total R$ 7,659    
Total, percentage 10.20%    
Deferred tax liabilities R$ (538)    
Deferred tax liabilities, percentage 4.30%    
Net deferred taxes R$ 7,121    
Net deferred taxes, percentage 11.30%    
2029      
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]      
Temporary differences R$ 6,017    
Temporary differences, percentage 8.00%    
Tax loss / social contribution loss carryforwards R$ 1    
Tax loss / social contribution loss carryforwards, percentage 0.20%    
Total R$ 6,018    
Total, percentage 8.00%    
Deferred tax liabilities R$ (1,355)    
Deferred tax liabilities, percentage 10.90%    
Net deferred taxes R$ 4,663    
Net deferred taxes, percentage 7.40%    
2030      
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]      
Temporary differences R$ 5,710    
Temporary differences, percentage 7.60%    
Tax loss / social contribution loss carryforwards R$ 2    
Tax loss / social contribution loss carryforwards, percentage 0.40%    
Total R$ 5,712    
Total, percentage 7.60%    
Deferred tax liabilities R$ (659)    
Deferred tax liabilities, percentage 5.30%    
Net deferred taxes R$ 5,053    
Net deferred taxes, percentage 8.00%    
After 2030      
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]      
Temporary differences R$ 26,815    
Temporary differences, percentage 35.90%    
Tax loss / social contribution loss carryforwards R$ 1    
Tax loss / social contribution loss carryforwards, percentage 0.20%    
Total R$ 26,816    
Total, percentage 35.50%    
Deferred tax liabilities R$ (8,246)    
Deferred tax liabilities, percentage 66.40%    
Net deferred taxes R$ 18,570    
Net deferred taxes, percentage 29.50%