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Income (Loss) per Share | 3 Months Ended
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Mar. 31, 2023
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 March 31 |
Millions of shares | 2023 | 2022 |  |
Basic weighted average common shares outstanding | 904 |  | 899 |  |  |
Dilutive effect of awards granted under our stock incentive plans | 3 |  | 4 |  |  |
Diluted weighted average common shares outstanding | 907 |  | 903 |  |  |
Antidilutive shares: |  |  |  |
Options with exercise price greater than the average market price | 14 |  | 16 |  |  |
Total antidilutive shares | 14 |  | 16 |  |  |

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