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Income per Share Income per Share (Tables)
 12 Months Ended
Dec. 31, 2024
Weighted average shares outstanding and antidilutive shares [Line Items]  
Weighted average shares outstanding and antidilutive shares
A reconciliation of the number of shares used for the basic and diluted income per share computations is as follows:
Year Ended December 31,
Millions of shares202420232022
Basic weighted average common shares outstanding882 899 904 
Dilutive effect of awards granted under our stock incentive plans1 3 4 
Diluted weighted average common shares outstanding883 902 908 
Antidilutive shares:
Options with exercise price greater than the average market price10 12 15 
Total antidilutive shares10 12 15