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Earnings per Share
 3 Months Ended
Mar. 31, 2025
Earnings Per Share [Abstract]  
Earnings per Share Earnings per Share
The computations of basic and diluted earnings per share were as follows:
Three Months Ended March 31,
2025
2024
(in millions, except per share amounts)
Numerator:
Net income$583 $990 
Denominator:
Basic: Weighted-average common shares outstanding98.5 102.8 
Effect of potentially dilutive nonqualified stock options and other share-based awards1.5 1.8 
Diluted: Weighted-average common shares outstanding100.0 104.6 
Earnings per share:
Basic$5.92 $9.63 
Diluted$5.83 $9.46 
The calculation of diluted earnings per share includes the dilutive effect of the assumed exercise or issuance of stock-based awards using the treasury stock method. The calculation excludes the incremental effect of 0.1 million and nil options for the three months ended March 31, 2025 and 2024, respectively, due to their anti-dilutive effect.