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Earnings per Share
 9 Months Ended
Sep. 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 September 30,
Nine Months Ended September 30,
2024
2023
2024
2023
(in millions, except per share amounts)
Numerator:
Net income$511 $872 $2,330 $2,179 
Denominator:
Basic: Weighted-average common shares outstanding100.4 104.9 101.6 106.4 
Effect of potentially dilutive nonqualified stock options and other share-based awards1.8 2.2 1.8 2.1 
Diluted: Weighted-average common shares outstanding102.2 107.1 103.4 108.5 
Earnings per share:
Basic$5.09 $8.31 $22.93 $20.48 
Diluted$5.00 $8.14 $22.53 $20.08 
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 nil options for both the three months ended September 30, 2024 and 2023, and nil and 0.2 million options for the nine months ended September 30, 2024 and 2023, respectively, due to their anti-dilutive effect.