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Earnings (Loss) Per Share (Tables) | 9 Months Ended
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Sep. 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 September 30, |  | Nine months ended September 30, |
(Amounts in millions, except per share amounts) |  | 2024 |  | 2023 |  | 2024 |  | 2023 |  |
Numerator: |  |  |  |  |  |  |  |  |  |
Net income (loss) from continuing operations attributable to 3M |  | $ | 1,372 |  |  | $ | (2,527) |  |  | $ | 3,281 |  |  | $ | (9,036) |  |  |
Net income (loss) from discontinued operations, net of taxes |  | — |  |  | 452 |  |  | 164 |  |  | 1,096 |  |  |
Net income (loss) attributable to 3M |  | $ | 1,372 |  |  | $ | (2,075) |  |  | $ | 3,445 |  |  | $ | (7,940) |  |  |
Denominator: |  |  |  |  |  |  |  |  |  |
Denominator for weighted average 3M common shares outstanding – basic |  | 550.6 |  |  | 554.3 |  |  | 553.1 |  |  | 553.7 |  |  |
Dilution associated with stock-based compensation plans |  | 2.1 |  |  | — |  |  | 1.4 |  |  | — |  |  |
Denominator for weighted average 3M common shares outstanding – diluted |  | 552.7 |  |  | 554.3 |  |  | 554.5 |  |  | 553.7 |  |  |
Earnings (loss) per share attributable to 3M common shareholders: |  |  |  |  |  |  |  |  |  |
Earnings (loss) per share from continuing operations — basic |  | $ | 2.49 |  |  | $ | (4.56) |  |  | $ | 5.93 |  |  | $ | (16.32) |  |  |
Earnings (loss) per share from discontinued operations — basic |  | — |  |  | 0.82 |  |  | 0.30 |  |  | 1.98 |  |  |
Earnings (loss) per share — basic |  | $ | 2.49 |  |  | $ | (3.74) |  |  | $ | 6.23 |  |  | $ | (14.34) |  |  |
Earnings (loss) per share from continuing operations — diluted |  | $ | 2.48 |  |  | $ | (4.56) |  |  | $ | 5.92 |  |  | $ | (16.32) |  |  |
Earnings (loss) per share from discontinued operations — diluted |  | — |  |  | 0.82 |  |  | 0.29 |  |  | 1.98 |  |  |
Earnings (loss) per share — diluted |  | $ | 2.48 |  |  | $ | (3.74) |  |  | $ | 6.21 |  |  | $ | (14.34) |  |  |

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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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