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Loss Per Share
 3 Months Ended
Mar. 31, 2024
Earnings Per Share [Abstract]  
Loss Per Share Loss Per Share
Basic loss per share is calculated by dividing net loss by the weighted average number of shares outstanding. Diluted loss per share is calculated similarly but includes potential dilution from restricted stock units, the crewmember stock purchase plan, convertible notes, warrants issued under various federal payroll support programs, and any other potentially dilutive instruments using the treasury stock and if-converted method. Anti-dilutive common stock equivalents excluded from the computation of diluted loss per share amounts were 3.8 million and 1.6 million for the three months ended March 31, 2024 and March 31, 2023, respectively.
The following table shows how we computed basic and diluted loss per common share for the three months ended March 31, 2024 and 2023 (dollars and share data in millions):
Three Months Ended March 31,
 20242023
Net loss$(716)$(192)
Weighted average basic shares339.7 327.6 
Effect of dilutive securities— — 
Weighted average diluted shares$339.7 327.6 
Loss per common share
Basic$(2.11)$(0.58)
Diluted$(2.11)$(0.58)