XML 77 R59.htm IDEA: XBRL DOCUMENT v3.25.1
Financing Activities - Narrative (Details)
 1 Months Ended 3 Months Ended 4 Months Ended
Apr. 17, 2025
USD ($)
Mar. 31, 2025
USD ($)
program
Feb. 19, 2025
$ / shares
May 01, 2020
USD ($)
$ / shares
Apr. 30, 2025
$ / shares
shares
Feb. 28, 2025
USD ($)
shares
Jan. 31, 2025
shares
Mar. 31, 2025
USD ($)
program
aircraft
Dec. 31, 2024
USD ($)
aircraft
Mar. 31, 2024
USD ($)
Apr. 30, 2025
shares
Jan. 31, 2025
$ / shares
shares
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Payroll support programs | program   3           3            
Proceeds from sale-leaseback transactions               $ 24,000,000   $ 0        
Gain on sale-leaseback transactions               3,000,000   0        
Repurchase of common stock               $ 750,000,000   0        
First Quarter 2025 ASR Program                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Repurchase of common stock           $ 750,000,000                
Shares acquired in repurchase (in shares) | shares           19,867,550                
Percentage of total shares acquired on initial delivery           0.80                
Initial price paid per share for shares repurchased (in dollars per share) | $ / shares     $ 30.20                      
Fourth Quarter 2024 ASR Program                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Shares acquired in repurchase (in shares) | shares             1,010,663         7,806,450    
Shares repurchased, average purchase price per share (in dollars per share) | $ / shares                       $ 32.02    
Subsequent Event | First Quarter 2025 ASR Program                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Shares acquired in repurchase (in shares) | shares         4,242,267           24,109,817      
Shares repurchased, average purchase price per share (in dollars per share) | $ / shares         $ 31.11                  
Air Transportation Equipment | Boeing 737 800                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Number of aircraft sale agreements | aircraft                 36          
Number of aircrafts sold | aircraft               1            
Proceeds from sale-leaseback transactions               $ 24,000,000            
Sale leaseback transaction, lease term (in years)               3 years            
Gain on sale-leaseback transactions               $ 3,000,000            
Convertible Debt                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Principal amount   $ 1,600,000,000   $ 2,300,000,000       $ 1,600,000,000 $ 1,600,000,000          
Conversion ratio   0.0275005   0.0259909                    
Initial conversion price (in USD per share) | $ / shares       $ 38.48                    
Principal amount of debt repurchased                         $ 689,000,000 $ 689,000,000
Term (in years)               5 years            
Convertible Debt | 1.25% Convertible Notes (a)                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Amounts outstanding   $ 1,611,000,000           $ 1,611,000,000            
Convertible Debt | 1.25% Convertible Notes (a) | Level 2                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Stated interest rate   1.25%   1.25%       1.25%            
Notes Due 2027                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Effective interest rate   1.90%           1.90%            
Line of Credit                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Borrowing capacity   $ 1,000,000,000           $ 1,000,000,000            
Amounts outstanding   0           0   $ 0        
Unsecured Debt | 1.000% Payroll Support Program Loan due 2030                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Amounts outstanding   976,000,000           976,000,000            
Unsecured Debt | 1.000% Payroll Support Program Loan due 2030 | Subsequent Event                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Early repayments of loan $ 976,000,000                          
Unsecured Debt | 1.000% Payroll Support Program Loan due 2031                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Amounts outstanding   566,000,000           566,000,000            
Unsecured Debt | 1.000% Payroll Support Program Loan Due 2031                            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                            
Amounts outstanding   $ 526,000,000           $ 526,000,000