XML 52 R28.htm IDEA: XBRL DOCUMENT v2.4.1.9
Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2014
Significant Accounting Policies  
Earnings per share
Earnings Per Share Computations         
            
(Amounts in millions, except per share amounts) 2014 2013 2012
Numerator:         
 Net income attributable to 3M  $ 4,956 $ 4,659 $ 4,444
            
Denominator:         
 Denominator for weighted average 3M common shares          
  outstanding – basic    649.2   681.9   693.9
            
 Dilution associated with the Company’s stock-based          
  compensation plans    12.8   11.7   9.4
            
 Denominator for weighted average 3M common shares         
  outstanding – diluted    662.0   693.6   703.3
            
Earnings per share attributable to 3M common shareholders – basic $ 7.63 $ 6.83 $ 6.40
Earnings per share attributable to 3M common shareholders – diluted  $ 7.49 $ 6.72 $ 6.32