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Net Earnings Per Share
 12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Net Earnings Per Share Net Earnings Per Share
Net earnings per share were computed as follows:
 Year ended December 31,
 202420232022
 (in millions, except per share amounts)
Net earnings attributable to common stockholders$1,218 $1,525 $3,346 
Basic earnings per common share:
Weighted-average common shares outstanding180.4 193.3 203.3 
Net earnings attributable to common stockholders$6.75 $7.89 $16.45 
Diluted earnings per common share:
Weighted-average common shares outstanding180.4 193.3 203.3 
Dilutive common shares—stock-based awards0.3 0.5 0.9 
Diluted weighted-average common shares outstanding180.7 193.8 204.2 
Net earnings attributable to common stockholders$6.74 $7.87 $16.38 
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, 2024, 2023 and 2022.