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Earnings per share (Tables) | 9 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Computation for basic and diluted earnings per share | The computations for basic and diluted EPS were as follows (in millions, except per-share data):
| Three months ended September 30, |  | Nine months ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Income (Numerator): |  |  |  |  |  |  |
Net income for basic and diluted EPS | $ | 1,730 |  |  | $ | 2,143 |  |  | $ | 5,950 |  |  | $ | 4,936 |
Shares (Denominator): |  |  |  |  |  |  |
Weighted-average shares for basic EPS | 535 |  |  | 535 |  |  | 535 |  |  | 539 |
Effect of dilutive securities | 3 |  |  | 3 |  |  | 3 |  |  | 3 |
Weighted-average shares for diluted EPS | 538 |  |  | 538 |  |  | 538 |  |  | 542 |
Basic EPS | $ | 3.23 |  |  | $ | 4.01 |  |  | $ | 11.12 |  |  | $ | 9.16 |
Diluted EPS | $ | 3.22 |  |  | $ | 3.98 |  |  | $ | 11.06 |  |  | $ | 9.11 |

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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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