| Schedule of Quarterly Financial Information |
| | | | | | | | | | | | | | | | | (Millions, except per-share amounts) | | First | | Second | | Third | | Fourth | | Year | | 2020 | | Quarter | | Quarter | | Quarter | | Quarter | | 2020 | | Net sales | | $ | 8,075 | | $ | 7,176 | | $ | 8,350 | | $ | 8,583 | | $ | 32,184 | | Cost of sales | | | 4,109 | | | 3,805 | | | 4,303 | | | 4,388 | | | 16,605 | | Net income including noncontrolling interest | | | 1,294 | | | 1,287 | | | 1,417 | | | 1,390 | | | 5,388 | | Net income attributable to 3M | | | 1,292 | | | 1,290 | | | 1,413 | | | 1,389 | | | 5,384 | | Earnings per share attributable to 3M common shareholders - basic | | | 2.24 | | | 2.24 | | | 2.45 | | | 2.40 | | | 9.32 | | Earnings per share attributable to 3M common shareholders - diluted | | | 2.22 | | | 2.22 | | | 2.43 | | | 2.38 | | | 9.25 | |
| | | | | | | | | | | | | | | | | (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 | |
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