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Earnings per share
 6 Months Ended
Jun. 30, 2024
Earnings Per Share [Abstract]  
Earnings per share Earnings per share
The computation of basic EPS is based on the weighted-average number of our common shares outstanding. The computation of diluted EPS is based on the weighted-average number of our common shares outstanding and dilutive potential common shares, which primarily include shares that may be issued under our stock option, restricted stock and performance unit award programs (collectively, dilutive securities), as determined by using the treasury stock method.
The computations for basic and diluted EPS were as follows (in millions, except per-share data):
 Three months ended
June 30,		Six months ended
June 30,
 2024202320242023
Income (Numerator):
Net income for basic and diluted EPS$746 $1,379 $633 $4,220 
Shares (Denominator):
Weighted-average shares for basic EPS537 535 537 534 
Effect of dilutive securities4 2 4 3 
Weighted-average shares for diluted EPS541 537 541 537 
Basic EPS$1.39 $2.58 $1.18 $7.90 
Diluted EPS$1.38 $2.57 $1.17 $7.86 
For the three and six months ended June 30, 2024 and 2023, the number of antidilutive employee stock-based awards excluded from the computation of diluted EPS was not significant.