| Schedule of Quarterly Financial Information |
| | | | | | | | | | | | | | | | | (Millions, except per-share amounts) | | First | | Second | | Third | | Fourth | | Year | | 2019 | | Quarter | | Quarter | | Quarter | | Quarter | | 2019 | | Net sales | | $ | 7,863 | | $ | 8,171 | | $ | 7,991 | | $ | 8,111 | | $ | 32,136 | | Cost of sales | | | 4,310 | | | 4,313 | | | 4,188 | | | 4,325 | | | 17,136 | | Net income including noncontrolling interest | | | 893 | | | 1,131 | | | 1,588 | | | 970 | | | 4,582 | | Net income attributable to 3M | | | 891 | | | 1,127 | | | 1,583 | | | 969 | | | 4,570 | | Earnings per share attributable to 3M common shareholders - basic | | | 1.54 | | | 1.95 | | | 2.75 | | | 1.68 | | | 7.92 | | Earnings per share attributable to 3M common shareholders - diluted | | | 1.51 | | | 1.92 | | | 2.72 | | | 1.66 | | | 7.81 | |
| | | | | | | | | | | | | | | | | (Millions, except per-share amounts) | | First | | Second | | Third | | Fourth | | Year | | 2018 | | Quarter | | Quarter | | Quarter | | Quarter | | 2018 | | Net sales | | $ | 8,278 | | $ | 8,390 | | $ | 8,152 | | $ | 7,945 | | $ | 32,765 | | Cost of sales | | | 4,236 | | | 4,227 | | | 4,159 | | | 4,060 | | | 16,682 | | Net income including noncontrolling interest | | | 606 | | | 1,862 | | | 1,546 | | | 1,349 | | | 5,363 | | Net income attributable to 3M | | | 602 | | | 1,857 | | | 1,543 | | | 1,347 | | | 5,349 | | Earnings per share attributable to 3M common shareholders - basic | | | 1.01 | | | 3.14 | | | 2.64 | | | 2.32 | | | 9.09 | | Earnings per share attributable to 3M common shareholders - diluted | | | 0.98 | | | 3.07 | | | 2.58 | | | 2.27 | | | 8.89 | |
|