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Business Segments | 9 Months Ended
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Sep. 30, 2022
Segment Reporting [Abstract] |
Business Segments | Business Segments 3M’s businesses are organized, managed and internally grouped into segments based on differences in markets, products, technologies and services. 3M manages its operations in four business segments: Safety and Industrial; Transportation and Electronics; Health Care; and Consumer. 3M’s four business segments bring together common or related 3M technologies, enhancing the development of innovative products and services and providing for efficient sharing of business resources. Transactions among reportable segments are recorded at cost. 3M is an integrated enterprise characterized by substantial intersegment cooperation, cost allocations and inventory transfers. Therefore, management does not represent that these segments, if operated independently, would report the operating income information shown. 3M discloses business segment operating income as its measure of segment profit/loss, reconciled to both total 3M operating income and income before taxes. Business segment operating income excludes certain expenses and income that are not allocated to business segments (as described below in “Corporate and Unallocated”). Effective in the first quarter of 2022, the measure of segment operating performance used by 3M’s chief operating decision maker (CODM) changed and, as a result, 3M’s disclosed measure of segment profit/loss (business segment operating income (loss) ) was updated. The change to business segment operating income aligns with the update to how the CODM assesses performance and allocates resources for the Company’s business segments. The changes included the items described below. The financial information presented herein reflects the impact of these business segment reporting changes for all periods presented. Eliminating inclusion of dual credit in measure of segment operating performance 3M business segment operating performance measures were updated to no longer include dual credit to business segments for certain sales and related operating income. Management previously evaluated its business segments based on net sales and operating income performance, including dual credit reporting. 3M reflected additional (“dual”) credit to another business segment when the customer account activity (“sales district”) with respect to the particular product sold to the external customer was provided by a different business segment. For example, privacy screen protection products are primarily sold by the Display Materials and Systems Division within the Transportation and Electronics business segment; however, certain sales districts within the Consumer business segment provide the customer account activity for sales of the product to particular customers. In this example, the non-primary selling segment (Consumer) previously would also have received credit for the associated net sales initiated through its sales district and the related approximate operating income. The offset to the dual credit business segment reporting was reflected as a reconciling item entitled “Elimination of Dual Credit,” such that sales and operating income in total were unchanged. Reflecting certain litigation-related costs in the Safety and Industrial segment's operating performance measure 3M's business segment operating performance measure with respect to its Safety and Industrial business segment was updated relative to litigation-related costs for non-Aearo and Aearo respirator mask/asbestos litigation matters. Previously, 3M included these costs, when significant, as a special item (as further described below) within Corporate and Unallocated. 3M changed to include all litigation-related costs associated with respirator mask/asbestos litigation matters (along with other Safety and Industrial matters already included therein, such as those related to Combat Arms Earplugs) within the Safety and Industrial business segment. Note, however, that prospectively during the Aearo chapter 11 bankruptcy period (which began in July 2022 — see Note 14) net costs for significant litigation associated with Combat Arms Earplugs and Aearo-respirator mask/asbestos matters are reflected in Corporate and Unallocated. Business Segment Information
(Millions) |  | Three months ended September 30, |  | Nine months ended September 30,
Net Sales |  | 2022 |  | 2021 |  | 2022 |  | 2021
Safety and Industrial |  | $ | 2,894 |  |  | $ | 3,005 |  |  | $ | 8,869 |  |  | $ | 9,133 |
Transportation and Electronics |  | 2,239 |  |  | 2,327 |  |  | 6,847 |  |  | 7,078 |
Health Care |  | 2,076 |  |  | 2,173 |  |  | 6,379 |  |  | 6,407 |
Consumer |  | 1,409 |  |  | 1,434 |  |  | 4,052 |  |  | 4,123 |
Corporate and Unallocated |  | 1 |  |  | 3 |  |  | 3 |  |  | 2 |
Total Company |  | $ | 8,619 |  |  | $ | 8,942 |  |  | $ | 26,150 |  |  | $ | 26,743 |
|  | Three months ended September 30, |  | Nine months ended September 30,
Operating Performance |  | 2022 |  | 2021 |  | 2022 |  | 2021
Safety and Industrial |  | $ | 652 |  |  | $ | 562 |  |  | $ | 581 |  |  | $ | 1,976 |
Transportation and Electronics |  | 474 |  |  | 435 |  |  | 1,446 |  |  | 1,504 |
Health Care |  | 452 |  |  | 510 |  |  | 1,394 |  |  | 1,522 |
Consumer |  | 299 |  |  | 308 |  |  | 770 |  |  | 867 |
Total business segment operating income |  | 1,877 |  |  | 1,815 |  |  | 4,191 |  |  | 5,869 |
Corporate and Unallocated |  |  |  |  |  |  |  |
Corporate special items: |  |  |  |  |  |  |  |
Net costs for significant litigation |  | (246) |  |  | (37) |  |  | (812) |  |  | (182) |
Divestiture costs |  | (6) |  |  | — |  |  | (6) |  |  | — |
Gain on business divestitures |  | 2,724 |  |  | — |  |  | 2,724 |  |  | — |
Divestiture-related restructuring actions |  | (41) |  |  | — |  |  | (41) |  |  | — |
Russia exit charges |  | (109) |  |  | — |  |  | (109) |  |  | — |
Total corporate special items |  | 2,322 |  |  | (37) |  |  | 1,756 |  |  | (182) |
Other corporate expense - net |  | (43) |  |  | 10 |  |  | (40) |  |  | 66 |
Total Corporate and Unallocated |  | 2,279 |  |  | (27) |  |  | 1,716 |  |  | (116) |
Total Company operating income |  | 4,156 |  |  | 1,788 |  |  | 5,907 |  |  | 5,753 |
Other expense/(income), net |  | 24 |  |  | 31 |  |  | 112 |  |  | 113 |
Income before income taxes |  | $ | 4,132 |  |  | $ | 1,757 |  |  | $ | 5,795 |  |  | $ | 5,640 |
Corporate and Unallocated Corporate and Unallocated operating income includes “corporate special items” and “other corporate expense-net”. Corporate special items include net costs for significant litigation associated with Combat Arms Earplugs and Aearo-respirator mask/asbestos matters during the chapter 11 bankruptcy period (which began in July 2022) and with PFAS-related other environmental matters (see Note 14). Corporate special items also include divestiture costs, gain/loss on business divestitures (see Note 3), divestiture-related restructuring costs (see Note 5), and Russia exit costs (see Note 13). Divestiture costs include costs related to separating and divesting substantially an entire business segment of 3M following public announcement of its intended divestiture. Other corporate expense-net includes items such as net costs related to limited unallocated corporate staff and centrally managed material resource centers of expertise costs, corporate philanthropic activity, and other net costs that 3M may choose not to allocate directly to its business segments. Other corporate expense-net also includes costs and income from transition supply, manufacturing, and service arrangements with Neogen Corporation following the 2022 split-off of 3M's Food Safety business and with the acquirer of the former Drug Delivery business following its 2020 divestiture. Items classified as revenue from this activity are included in Corporate and Unallocated net sales. Because Corporate and Unallocated includes a variety of miscellaneous items, it is subject to fluctuation on a quarterly and annual basis.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI https://asc.fasb.org/topic&trid=2134510 + Details
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