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Income (Loss) per Share
 6 Months Ended
Jun. 30, 2024
Earnings Per Share [Abstract]  
Income (Loss) per Share Income per Share
Basic income or loss per share is based on the weighted average number of common shares outstanding during the period. Diluted income per share includes additional common shares that would have been outstanding if potential common shares with a dilutive effect had been issued. Antidilutive securities represent potentially dilutive securities which are excluded from the computation of diluted income or loss per share as their impact was antidilutive.

A reconciliation of the number of shares used for the basic and diluted income per share computations is as follows:
Three Months Ended
June 30,		Six Months Ended
June 30,
Millions of shares2024202320242023
Basic weighted average common shares outstanding884 901 886 902 
Dilutive effect of awards granted under our stock incentive plans2 2 2 3 
Diluted weighted average common shares outstanding886 903 888 905 
Antidilutive shares:
Options with exercise price greater than the average market price10 13 10 14 
Total antidilutive shares10 13 10 14