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Net Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
Summary of 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