| Earnings Per Share Computations | | | | | | | | | |
| | | | | | | | | | | | |
| (Amounts in millions, except per share amounts) | | 2013 | | 2012 | | 2011 |
| Numerator: | | | | | | | | | |
| | Net income attributable to 3M | | $ | 4,659 | | $ | 4,444 | | $ | 4,283 |
| | | | | | | | | | | | |
| Denominator: | | | | | | | | | |
| | Denominator for weighted average 3M common shares | | | | | | | | | |
| | | outstanding – basic | | | 681.9 | | | 693.9 | | | 708.5 |
| | | | | | | | | | | | |
| | Dilution associated with the Company’s stock-based | | | | | | | | | |
| | | compensation plans | | | 11.7 | | | 9.4 | | | 10.5 |
| | | | | | | | | | | | |
| | Denominator for weighted average 3M common shares | | | | | | | | | |
| | | outstanding – diluted | | | 693.6 | | | 703.3 | | | 719.0 |
| | | | | | | | | | | | |
| Earnings per share attributable to 3M common shareholders – basic | | $ | 6.83 | | $ | 6.40 | | $ | 6.05 |
| Earnings per share attributable to 3M common shareholders – diluted | | $ | 6.72 | | $ | 6.32 | | $ | 5.96 |
