Income per Share

12 Months Ended

Dec. 31, 2023

Earnings Per Share [Abstract]

Income 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:

	Year Ended December 31
Millions of shares	2023	2022	2021
Basic weighted average common shares outstanding	899	904	892
Dilutive effect of awards granted under our stock incentive plans	3	4	—
Diluted weighted average common shares outstanding	902	908	892
Antidilutive shares:
Options with exercise price greater than the average market price	12	15	22
Total antidilutive shares	12	15	22