v3.26.1
PROVISIONS - Schedule of Changes in Provisions (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of other provisions [line items]      
Other liabilities R$ 1,774,675 R$ 4,179,036 R$ 3,140,853
Movements (1,539,352) 589,123  
Write-offs (605,141) (423,133)  
Interest incurred 187,372 76,989  
Effect of plan experience 1,014 (2,811)  
Foreign currency exchange R$ (448,254) R$ 798,015  
Nominal discount rate 17.90% 10.80%  
Return of aircraft and engines      
Disclosure of other provisions [line items]      
Other liabilities R$ 1,507,285 R$ 3,948,332 2,573,170
Movements (2,134,403) 503,080  
Write-offs (39,818) (77,086)  
Interest incurred 181,428 151,153  
Effect of plan experience 0 0  
Foreign currency exchange (448,254) 798,015  
Tax, civil and other risks      
Disclosure of other provisions [line items]      
Other liabilities 257,176 222,479 557,773
Movements 594,898 85,889  
Write-offs (565,204) (346,047)  
Interest incurred 5,003 (75,136)  
Effect of plan experience 0 0  
Foreign currency exchange 0 0  
Post -employment benefit      
Disclosure of other provisions [line items]      
Other liabilities 10,214 8,225 R$ 9,910
Movements 153 154  
Write-offs (119) 0  
Interest incurred 941 972  
Effect of plan experience 1,014 (2,811)  
Foreign currency exchange R$ 0 R$ 0