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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2025
Earnings Per Share [Abstract] |
Schedule of Earnings (Loss) Per Share Computations | The computations for basic and diluted earnings per share follow:
|  | Three months ended March 31, |  |  |
(Amounts in millions, except per share amounts) |  | 2025 |  | 2024 |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |  |  |
Net income from continuing operations attributable to 3M |  | $ | 1,116 |  |  | $ | 705 |  |  |  |  |  |  |
Net income from discontinued operations, net of taxes |  | — |  |  | 223 |  |  |  |  |  |  |
Net income attributable to 3M |  | $ | 1,116 |  |  | $ | 928 |  |  |  |  |  |  |
Denominator: |  |  |  |  |  |  |  |  |  |
Denominator for weighted average 3M common shares outstanding – basic |  | 543.8 |  |  | 555.0 |  |  |  |  |  |  |
Dilution associated with stock-based compensation plans |  | 3.9 |  |  | 0.9 |  |  |  |  |  |  |
Denominator for weighted average 3M common shares outstanding – diluted |  | 547.7 |  |  | 555.9 |  |  |  |  |  |  |
Earnings per share attributable to 3M common shareholders: |  |  |  |  |  |  |  |  |  |
Earnings per share from continuing operations — basic |  | $ | 2.05 |  |  | $ | 1.27 |  |  |  |  |  |  |
Earnings per share from discontinued operations — basic |  | — |  |  | 0.40 |  |  |  |  |  |  |
Earnings per share — basic |  | $ | 2.05 |  |  | $ | 1.67 |  |  |  |  |  |  |
Earnings per share from continuing operations — diluted |  | $ | 2.04 |  |  | $ | 1.27 |  |  |  |  |  |  |
Earnings per share from discontinued operations — diluted |  | — |  |  | 0.40 |  |  |  |  |  |  |
Earnings per share — diluted |  | $ | 2.04 |  |  | $ | 1.67 |  |  |  |  |  |  |

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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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