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Net Earnings Per Share
 12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
Net Earnings Per Share Net Earnings Per Share
Net earnings per share were computed as follows:
 Year ended December 31,
 202320222021
 (in millions, except per share amounts)
Net earnings attributable to common stockholders$1,525 $3,346 $917 
Basic earnings per common share:
Weighted-average common shares outstanding193.3 203.3 215.0 
Net earnings attributable to common stockholders$7.89 $16.45 $4.27 
Diluted earnings per common share:
Weighted-average common shares outstanding193.3 203.3 215.0 
Dilutive common shares—stock-based awards0.5 0.9 1.2 
Diluted weighted-average common shares outstanding193.8 204.2 216.2 
Net earnings attributable to common stockholders$7.87 $16.38 $4.24 
Diluted earnings per common share is calculated using weighted-average common shares outstanding, including the dilutive effect of stock-based awards as determined under the treasury stock method. In the computation of diluted earnings per common share, potentially dilutive stock-based awards are excluded if the effect of their inclusion is anti-dilutive. Shares for anti-dilutive stock-based awards not included in the computation of diluted earnings per common share were zero for the years ended December 31, 2023 and 2022 and 0.9 million for the year ended December 31, 2021.