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Earnings (Loss) Per Share (Tables) | 12 Months Ended
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Dec. 31, 2024
Earnings Per Share [Abstract] |
Schedule of Earnings (Loss) Per Share Computations | The computations for basic and diluted earnings per share follow:
(Amounts in millions, except per share amounts) |  |  |  |  |  | 2024 |  | 2023 |  | 2022
Numerator: |  |  |  |  |  |  |  |  |  |
Net income (loss) from continuing operations attributable to 3M |  |  |  |  |  | $ | 4,009 |  |  | $ | (8,402) |  |  | $ | 4,013 |
Net income (loss) from discontinued operations, net of taxes |  |  |  |  |  | 164 |  |  | 1,407 |  |  | 1,764 |
Net income (loss) attributable to 3M |  |  |  |  |  | $ | 4,173 |  |  | $ | (6,995) |  |  | $ | 5,777 |
Denominator: |  |  |  |  |  |  |  |  |  |
Denominator for weighted average 3M common shares outstanding – basic |  |  |  |  |  | 550.8 |  |  | 553.9 |  |  | 566.0 |
Dilution associated with stock-based compensation plans |  |  |  |  |  | 1.6 |  |  | — |  |  | 1.6 |
Denominator for weighted average 3M common shares outstanding – diluted |  |  |  |  |  | 552.4 |  |  | 553.9 |  |  | 567.6 |
Earnings (loss) per share attributable to 3M common shareholders: |  |  |  |  |  |  |  |  |  |
Earnings (loss) per share from continuing operations — basic |  |  |  |  |  | $ | 7.28 |  |  | $ | (15.17) |  |  | $ | 7.09 |
Earnings (loss) per share from discontinued operations — basic |  |  |  |  |  | 0.30 |  |  | 2.54 |  |  | 3.12 |
Earnings (loss) per share — basic |  |  |  |  |  | $ | 7.58 |  |  | $ | (12.63) |  |  | $ | 10.21 |
Earnings (loss) per share from continuing operations — diluted |  |  |  |  |  | $ | 7.26 |  |  | $ | (15.17) |  |  | $ | 7.07 |
Earnings (loss) per share from discontinued operations — diluted |  |  |  |  |  | 0.29 |  |  | 2.54 |  |  | 3.11 |
Earnings (loss) per share — diluted |  |  |  |  |  | $ | 7.55 |  |  | $ | (12.63) |  |  | $ | 10.18 |

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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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