v3.25.4
Earnings (Loss) Per Share - Schedule of Computations for Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Numerator:      
Net income (loss) from continuing operations attributable to 3M $ 3,250 $ 4,009 $ (8,402)
Net income from discontinued operations, net of taxes 0 164 1,407
Net income (loss) attributable to 3M $ 3,250 $ 4,173 $ (6,995)
Denominator:      
Weighted average 3M common shares outstanding - basic (in shares) 537.4 550.8 553.9
Dilution associated with stock-based compensation plans (in shares) 3.9 1.6 0.0
Weighted average 3M common shares outstanding – diluted (in shares) 541.3 552.4 553.9
Earnings (loss) per share attributable to 3M common shareholders:      
Earnings (loss) per share from continuing operations — basic (in dollars per share) $ 6.05 $ 7.28 $ (15.17)
Earnings per share from discontinued operations — basic (in dollars per share) 0 0.30 2.54
Earnings (loss) per share — basic (in dollars per share) 6.05 7.58 (12.63)
Earnings (loss) per share from continuing operations — diluted (in dollars per share) 6.00 7.26 (15.17)
Earnings per share from discontinued operations — diluted (in dollars per share) 0 0.29 2.54
Earnings (loss) per share — diluted (in dollars per share) $ 6.00 $ 7.55 $ (12.63)