v3.26.1
RIGHT-OF-USE ASSETS - Schedule of Right-of-Use Assets (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Changes in property, plant and equipment [abstract]    
Balance, beginning of period R$ 3,034,554  
Balance, end of period 2,772,299 R$ 3,034,554
Right-of-use assets | Cost    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period 21,534,996 17,856,235
Acquisitions 3,170,930 4,223,811
Write-offs (1,390,282) (642,066)
Modifications (2,337,355) 30,768
Transfers 156,729 66,248
Balance, end of period 21,135,018 21,534,996
Right-of-use assets | Cost | Aircraft, engines and simulators    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period 16,856,505 14,279,939
Acquisitions 1,634,904 2,701,036
Write-offs (879,183) (439,430)
Modifications (740,610) 248,712
Transfers 0 66,248
Balance, end of period 16,871,616 16,856,505
Right-of-use assets | Cost | Maintenance    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period 2,178,896 1,552,036
Acquisitions 1,069,595 744,988
Write-offs (353,081) (105,738)
Modifications (86,016) (12,390)
Transfers 156,729 0
Balance, end of period 2,966,123 2,178,896
Right-of-use assets | Cost | Restoration    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period 2,148,670 1,699,610
Acquisitions 450,509 713,649
Write-offs (156,566) (56,491)
Modifications (1,531,091) (208,098)
Transfers 0 0
Balance, end of period 911,522 2,148,670
Right-of-use assets | Cost | Others    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period 350,925 324,650
Acquisitions 15,922 64,138
Write-offs (1,452) (40,407)
Modifications 20,362 2,544
Transfers 0 0
Balance, end of period 385,757 350,925
Right-of-use assets | Depreciation    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period (10,064,317) (8,844,677)
Acquisitions (2,479,628) (2,052,183)
Write-offs 975,610 621,037
Modifications 558,341 211,506
Transfers 0 0
Balance, end of period (11,009,994) (10,064,317)
Right-of-use assets | Depreciation | Aircraft, engines and simulators    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period (8,163,584) (7,417,554)
Acquisitions (1,543,402) (1,185,460)
Write-offs 683,500 439,430
Modifications 0 0
Transfers 0 0
Balance, end of period (9,023,486) (8,163,584)
Right-of-use assets | Depreciation | Maintenance    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period (883,821) (616,379)
Acquisitions (487,586) (362,563)
Write-offs 135,790 95,121
Modifications 5,410 0
Transfers 0 0
Balance, end of period (1,230,207) (883,821)
Right-of-use assets | Depreciation | Restoration    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period (880,533) (701,501)
Acquisitions (389,013) (445,171)
Write-offs 155,852 54,633
Modifications 552,931 211,506
Transfers 0 0
Balance, end of period (560,763) (880,533)
Right-of-use assets | Depreciation | Others    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period (136,379) (109,243)
Acquisitions (59,627) (58,989)
Write-offs 468 31,853
Modifications 0 0
Transfers 0 0
Balance, end of period R$ (195,538) R$ (136,379)
Right-of-use assets | Depreciation | Weighted rate | Aircraft, engines and simulators    
Disclosure of detailed information about property and equipment [line items]    
Weighted average rate (p.a.) 9.00% 8.00%
Right-of-use assets | Depreciation | Weighted rate | Maintenance    
Disclosure of detailed information about property and equipment [line items]    
Weighted average rate (p.a.) 22.00% 23.00%
Right-of-use assets | Depreciation | Weighted rate | Restoration    
Disclosure of detailed information about property and equipment [line items]    
Weighted average rate (p.a.) 18.00% 26.00%
Right-of-use assets | Depreciation | Weighted rate | Others    
Disclosure of detailed information about property and equipment [line items]    
Weighted average rate (p.a.) 17.00% 18.00%
Right-of-use assets | Right-of-use assets, net    
Changes in property, plant and equipment [abstract]    
Balance, beginning of period R$ 11,470,679 R$ 9,011,558
Acquisitions 691,302 2,171,628
Write-offs (414,672) (21,029)
Modifications (1,779,014) 242,274
Transfers 156,729 66,248
Balance, end of period R$ 10,125,024 R$ 11,470,679