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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2024
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table provides a reconciliation between basic and diluted earnings per share for the years ended December 31:
Millions, Except Per Share Amounts | 2024 | 2023 | 2022
Net income | $ | 6,747 |  | $ | 6,379 |  | $ | 6,998 |
Weighted-average number of shares outstanding: |  |  |
Basic | 607.6 |  | 609.2 |  | 622.7 |
Dilutive effect of stock options | 0.4 |  | 0.4 |  | 0.6 |
Dilutive effect of retention shares and units | 0.6 |  | 0.6 |  | 0.7 |
Diluted | 608.6 |  | 610.2 |  | 624.0 |
Earnings per share - basic | $ | 11.10 |  | $ | 10.47 |  | $ | 11.24 |
Earnings per share - diluted | $ | 11.09 |  | $ | 10.45 |  | $ | 11.21 |

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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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