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Net Earnings Per Share
 3 Months Ended
Mar. 31, 2024
Earnings Per Share [Abstract]  
Net Earnings Per Share
Net earnings per share were computed as follows:
 Three months ended 
 March 31,
 20242023
 (in millions, except per share amounts)
Net earnings attributable to common stockholders$194 $560 
Basic earnings per common share:  
Weighted-average common shares outstanding187.6 196.2 
Net earnings attributable to common stockholders$1.03 $2.86 
Diluted earnings per common share:  
Weighted-average common shares outstanding187.6 196.2 
Dilutive common shares—stock-based awards0.5 0.7 
Diluted weighted-average common shares outstanding188.1 196.9 
Net earnings attributable to common stockholders$1.03 $2.85 
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 in both the three months ended March 31, 2024 and 2023.