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Consolidated Statements of Stockholders' Equity - USD ($)
shares in Millions, $ in Millions
Total
Common Stock
Treasury Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2017   418 (97)      
Beginning balance at Dec. 31, 2017 $ 4,805 $ 4 $ (890) $ 2,127 $ 3,564 $ 0
Net (loss) income 189       189  
Other comprehensive income (loss) (3)         (3)
Vesting of restricted stock units (in shares)   1        
Vesting of restricted stock units 7   $ (7)      
Stock compensation expense 28     28    
Stock issued under crewmember stock purchase plan (in shares)   3        
Shares issued under Crewmember Stock Purchase Plan 48     48    
Shares repurchased (in shares)     19      
Shares repurchased (375)   $ (375) 0    
Ending balance at Dec. 31, 2018 4,685 $ 4 $ (1,272) 2,203 3,753 (3)
Ending balance (in shares) at Dec. 31, 2018   422 (116)      
Net (loss) income 569       569  
Other comprehensive income (loss) 5         5
Vesting of restricted stock units (in shares)   2        
Vesting of restricted stock units 6   $ (6)      
Stock compensation expense 31     31    
Stock issued under crewmember stock purchase plan (in shares)   3        
Shares issued under Crewmember Stock Purchase Plan 51     51    
Shares repurchased (in shares)     29      
Shares repurchased (536)   $ (504) (32)    
Ending balance at Dec. 31, 2019 4,799 $ 4 $ (1,782) 2,253 4,322 2
Ending balance (in shares) at Dec. 31, 2019   427 (145)      
Net (loss) income (1,354)       (1,354)  
Other comprehensive income (loss) (2)         (2)
Vesting of restricted stock units (in shares)   1        
Vesting of restricted stock units 7   $ (7)      
Stock compensation expense 28     28    
Stock issued under crewmember stock purchase plan (in shares)   4        
Shares issued under Crewmember Stock Purchase Plan 35     35    
Shares repurchased (in shares)     13      
Shares repurchased (160)   $ (192) 32    
CARES Act warrant issuance 28     28    
Shares issued under common stock offering (in shares)   42        
Shares issued under common stock offering 584 $ 1   583    
Ending balance at Dec. 31, 2020 $ 3,951 $ 5 $ (1,981) $ 2,959 $ 2,968 $ 0
Ending balance (in shares) at Dec. 31, 2020   474 (158)