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Net Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2023
Earnings Per Share [Abstract]  
Summary of net earnings per share
Net earnings per share were computed as follows:
 Three months ended 
 June 30,
Six months ended 
 June 30,
 2023202220232022
 (in millions, except per share amounts)
Net earnings attributable to common stockholders$527 $1,165 $1,087 $2,048 
Basic earnings per common share:    
Weighted-average common shares outstanding194.6 208.2 195.4 208.4 
Net earnings attributable to common stockholders$2.71 $5.59 $5.56 $9.83 
Diluted earnings per common share:    
Weighted-average common shares outstanding194.6 208.2 195.4 208.4 
Dilutive common shares—stock-based awards0.4 0.7 0.5 1.0 
Diluted weighted-average common shares outstanding195.0 208.9 195.9 209.4 
Net earnings attributable to common stockholders$2.70 $5.58 $5.55 $9.78