v3.26.1
Financial risk management - Summary Of Macro Economic Variables (Detail)
Dec. 31, 2025
Dec. 31, 2024
2025 [Member] | Optimistic Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Unemployment Rate   (3.90%)
Real Disposable Income Per Capita Percentage   1.70%
Real formal average salary rate   1.80%
Private Formal Employment Percentage   3.50%
Real informal average salary rate   1.40%
2025 [Member] | Base Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Unemployment Rate   (2.60%)
Real Disposable Income Per Capita Percentage   1.10%
Real formal average salary rate   1.30%
Private Formal Employment Percentage   3.00%
Real informal average salary rate   1.00%
2025 [Member] | Pessimistic Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Unemployment Rate   (0.70%)
Real Disposable Income Per Capita Percentage   (0.70%)
Real formal average salary rate   0.00%
Private Formal Employment Percentage   2.10%
Real informal average salary rate   0.30%
2026 [Member] | Optimistic Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Unemployment Rate   (4.70%)
Real Disposable Income Per Capita Percentage 5.70% 2.40%
Real formal average salary rate 3.70% 0.90%
Private Formal Employment Percentage   3.00%
Real informal average salary rate 3.70% 1.30%
Gross Domestic Product Percentage 3.30%  
2026 [Member] | Base Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Unemployment Rate   (3.40%)
Real Disposable Income Per Capita Percentage 4.60% 2.00%
Real formal average salary rate 2.00% 0.50%
Private Formal Employment Percentage   2.60%
Real informal average salary rate 1.80% 0.50%
Gross Domestic Product Percentage 3.00%  
2026 [Member] | Pessimistic Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Unemployment Rate   (0.10%)
Real Disposable Income Per Capita Percentage 2.50% 1.30%
Real formal average salary rate 0.60% (0.10%)
Private Formal Employment Percentage   2.10%
Real informal average salary rate 0.80% (0.10%)
Gross Domestic Product Percentage 2.20%  
2027 [Member] | Optimistic Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Unemployment Rate   (7.60%)
Real Disposable Income Per Capita Percentage 3.00% 3.20%
Real formal average salary rate 2.10% 1.40%
Private Formal Employment Percentage   3.20%
Real informal average salary rate 2.10% 1.20%
Gross Domestic Product Percentage 3.00%  
2027 [Member] | Base Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Unemployment Rate   (4.00%)
Real Disposable Income Per Capita Percentage 2.20% 2.70%
Real formal average salary rate 1.10% 0.70%
Private Formal Employment Percentage   2.80%
Real informal average salary rate 1.10% 0.70%
Gross Domestic Product Percentage 2.60%  
2027 [Member] | Pessimistic Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Unemployment Rate   (0.40%)
Real Disposable Income Per Capita Percentage 1.70% 2.30%
Real formal average salary rate (0.10%) 0.10%
Private Formal Employment Percentage   2.30%
Real informal average salary rate 0.00% 0.10%
Gross Domestic Product Percentage 2.00%  
2028 [Member] | Optimistic Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Real Disposable Income Per Capita Percentage 4.40%  
Real formal average salary rate 2.70%  
Real informal average salary rate 2.40%  
Gross Domestic Product Percentage 3.50%  
2028 [Member] | Base Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Real Disposable Income Per Capita Percentage 3.50%  
Real formal average salary rate 1.40%  
Real informal average salary rate 1.30%  
Gross Domestic Product Percentage 3.10%  
2028 [Member] | Pessimistic Case Scenario [Member]    
Disclosure Of Macro Economic Variables [Line Items]    
Real Disposable Income Per Capita Percentage 2.90%  
Real formal average salary rate 0.60%  
Real informal average salary rate 0.00%  
Gross Domestic Product Percentage 2.50%