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Earnings (Loss) Per Share (Tables) | 6 Months Ended
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Jun. 30, 2024
Earnings Per Share [Abstract] |
Schedule of Earnings (Loss) Per Share Computations | The computations for basic and diluted earnings (loss) per share follow:
|  | Three months ended June 30, |  | Six months ended June 30, |
(Amounts in millions, except per share amounts) |  | 2024 |  | 2023 |  | 2024 |  | 2023 |  |
Numerator: |  |  |  |  |  |  |  |  |  |
Net income (loss) from continuing operations attributable to 3M |  | $ | 1,204 |  |  | $ | (7,171) |  |  | $ | 1,909 |  |  | $ | (6,509) |  |  |
Net income (loss) from discontinued operations, net of taxes |  | (59) |  |  | 330 |  |  | 164 |  |  | 644 |  |  |
Net income (loss) attributable to 3M |  | $ | 1,145 |  |  | $ | (6,841) |  |  | $ | 2,073 |  |  | $ | (5,865) |  |  |
Denominator: |  |  |  |  |  |  |  |  |  |
Denominator for weighted average 3M common shares outstanding – basic |  | 553.8 |  |  | 553.9 |  |  | 554.4 |  |  | 553.3 |  |  |
Dilution associated with stock-based compensation plans |  | 1.0 |  |  | — |  |  | 0.9 |  |  | — |  |  |
Denominator for weighted average 3M common shares outstanding – diluted |  | 554.8 |  |  | 553.9 |  |  | 555.3 |  |  | 553.3 |  |  |
Earnings (loss) per share attributable to 3M common shareholders: |  |  |  |  |  |  |  |  |  |
Earnings (loss) per share from continuing operations — basic |  | $ | 2.17 |  |  | $ | (12.94) |  |  | $ | 3.44 |  |  | $ | (11.76) |  |  |
Earnings (loss) per share from discontinued operations — basic |  | (0.10) |  |  | 0.59 |  |  | 0.30 |  |  | 1.16 |  |  |
Earnings (loss) per share — basic |  | $ | 2.07 |  |  | $ | (12.35) |  |  | $ | 3.74 |  |  | $ | (10.60) |  |  |
Earnings (loss) per share from continuing operations — diluted |  | $ | 2.17 |  |  | $ | (12.94) |  |  | $ | 3.44 |  |  | $ | (11.76) |  |  |
Earnings (loss) per share from discontinued operations — diluted |  | (0.10) |  |  | 0.59 |  |  | 0.29 |  |  | 1.16 |  |  |
Earnings (loss) per share — diluted |  | $ | 2.07 |  |  | $ | (12.35) |  |  | $ | 3.73 |  |  | $ | (10.60) |  |  |

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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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