v3.22.4
Significant Accounting Policies - Earnings Per Share Computations (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Earnings per share      
Options outstanding not included in computation of diluted earnings per share (in shares) 30.3 7.8 18.1
Numerator:      
Net income attributable to 3M $ 5,777 $ 5,921 $ 5,449
Denominator:      
Denominator for weighted average 3M common shares outstanding - basic (in shares) 566.0 579.0 577.6
Dilution associated with the Company's stock-based compensation plans (in shares) 1.6 6.3 4.6
Denominator for weighted average 3M common shares outstanding - diluted (in shares) 567.6 585.3 582.2
Earnings per share attributable to 3M common shareholders - basic (in dollars per share) $ 10.21 $ 10.23 $ 9.43
Earnings per share attributable to 3M common shareholders - diluted (in dollars per share) $ 10.18 $ 10.12 $ 9.36