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Earnings (Loss) Per Share (Tables)
 12 Months Ended
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)202420232022
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