v3.26.3
Commitments and Contingencies - Narrative (Details)
$ in Millions
1 Months Ended 9 Months Ended
Jan. 31, 2023
Sep. 30, 2026
USD ($)
airbus
Dec. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Feb. 28, 2023
lawsuit
Jul. 14, 2022
instructor
Unrecorded Unconditional Purchase Obligation [Line Items]            
Assets held for sale   $ 165 $ 138      
Restricted cash and cash equivalents   264        
Restricted assets pledged under letter of credit   74        
Letters of credit   58        
Restricted cash and cash equivalents [1]   264   $ 239    
Restricted assets pledged related to workers compensation insurance policies and other business partner agreements   $ 67        
Percentage of employees represented by unions under collective bargaining agreements   49.00%        
Number of flight instructor | instructor           35
Collective bargaining agreement contract extension period 2 years          
Employment agreement term   5 years        
Automatic renewal term, employment agreement, term   5 years        
Renewal notice period, employment agreement, period   90 days        
Number of pending claims pertaining to a loss contingency | lawsuit         4  
Pilot            
Unrecorded Unconditional Purchase Obligation [Line Items]            
Percentage of employees represented by unions under collective bargaining agreements, will become amendable within one year   21.00%        
Inflight crewmember            
Unrecorded Unconditional Purchase Obligation [Line Items]            
Percentage of employees represented by unions under collective bargaining agreements, will become amendable within one year   28.00%        
JFK Millennium Partner LLC            
Unrecorded Unconditional Purchase Obligation [Line Items]            
Restricted cash and cash equivalents   $ 65        
Ownership percentage   5.00%        
Airbus A321 neo XLR            
Unrecorded Unconditional Purchase Obligation [Line Items]            
Number of aircraft owned | airbus   2        
IAE V2500 Engine            
Unrecorded Unconditional Purchase Obligation [Line Items]            
Number of aircraft owned | airbus   2        
Embraer E190            
Unrecorded Unconditional Purchase Obligation [Line Items]            
Net gain on disposition of equipment   $ 28        
[1] Restricted cash and restricted cash equivalents primarily consists of principal and interest payments held as a reserve associated with the financing of the TrueBlue® program, funds held for workers compensation obligations and various letters of credit.