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Earnings per Share
 6 Months Ended
Jun. 30, 2024
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 June 30,
Six Months Ended June 30,
2024
2023
2024
2023
(in millions, except per share amounts)
Numerator:
Net income$829 $890 $1,819 $1,307 
Denominator:
Basic: Weighted-average common shares outstanding101.6 106.4 102.2 107.1 
Effect of potentially dilutive nonqualified stock options and other share-based awards1.8 2.0 1.8 2.1 
Diluted: Weighted-average common shares outstanding103.4 108.4 104.0 109.2 
Earnings per share:
Basic$8.16 $8.36 $17.80 $12.20 
Diluted$8.02 $8.21 $17.49 $11.97 
The calculation of diluted earnings per share excludes the incremental effect of nil options for both the three months ended June 30, 2024 and 2023, and 0.1 million and 0.2 million options for the six months ended June 30, 2024 and 2023, respectively, due to their anti-dilutive effect.