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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Earnings Per Share, Basic and Diluted | The following table presents the calculation of net income available to common shareholders and basic and diluted EPS. For the periods presented in the table below, diluted EPS calculated under the two-class method was more dilutive.
| Millions of Dollars (except per share amounts)
| Three Months Ended September 30 | Nine Months Ended September 30
| 2023 | 2022 | 2023 | 2022
Basic earnings per share |  |  |  |
Net Income | $ | 2,798 |  | 4,527 | 7,950 | 15,431
Less: Dividends and undistributed earnings |  |  |  |
allocated to participating securities | 9 | 16 | 26 | 47
Net Income available to common shareholders | $ | 2,789 |  | 4,511 | 7,924 | 15,384
Average common shares outstanding (in Millions) | 1,197 | 1,266 | 1,208 | 1,286
Net Income Per Share of Common Stock | $ | 2.33 |  | 3.56 | 6.56 | 11.96
Diluted earnings per share |  |  |  |
Net Income available to common shareholders | $ | 2,789 |  | 4,511 | 7,924 | 15,384
Average common shares outstanding (in Millions) | 1,197 | 1,266 | 1,208 | 1,286
Add: Dilutive impact of options and unvested |  |  |  |
non-participating RSU/PSUs (in Millions) | 3 | 3 | 3 | 4
Average diluted shares outstanding (in Millions) | 1,200 | 1,269 | 1,211 | 1,290
Net Income Per Share of Common Stock | $ | 2.32 |  | 3.55 | 6.54 | 11.93

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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