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Net Earnings Per Share
 3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Net Earnings Per Share Net Earnings Per Share
Net earnings per share were computed as follows:
 Three months ended 
 March 31,
 20222021
 (in millions, except per share amounts)
Net earnings attributable to common stockholders$883 $151 
Basic earnings per common share:  
Weighted-average common shares outstanding208.6 214.9 
Net earnings attributable to common stockholders$4.23 $0.70 
Diluted earnings per common share:  
Weighted-average common shares outstanding208.6 214.9 
Dilutive common shares—stock-based awards1.3 1.1 
Diluted weighted-average common shares outstanding209.9 216.0 
Net earnings attributable to common stockholders$4.21 $0.70 
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 1.2 million in the three months ended March 31, 2021.