v3.25.2
Long-term Debt, Short-term Borrowings and Finance Lease Obligations - Narrative (Details) - USD ($)
6 Months Ended
Feb. 28, 2025
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Aug. 31, 2024
Oct. 21, 2022
Line of Credit Facility [Line Items]            
Reduction in outstanding debt and capital lease obligations   $ 228,000,000 $ 166,000,000      
Pledged assets not separately reported flight equipment   7,400,000,000        
Morgan Stanley | Line of Credit            
Line of Credit Facility [Line Items]            
Line of credit facility, maximum borrowing capacity   200,000,000        
Short-term debt   0   $ 0    
TrueBlue® senior secured term loan facility, due through 2029 | Line of Credit            
Line of Credit Facility [Line Items]            
Line of credit facility, maximum borrowing capacity         $ 765,000,000  
Debt instrument, variable rate 4.75%          
Second Amended And Restated Agreement | Citibank | Line of Credit            
Line of Credit Facility [Line Items]            
Line of credit facility, maximum borrowing capacity           $ 600,000,000
Long-term line of credit   $ 0   $ 0    
0.50% convertible senior notes, due through 2026            
Line of Credit Facility [Line Items]            
Debt instrument, interest rate, stated percentage (in percent)   0.50%