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Business Segments
 6 Months Ended
Jun. 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 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 now includes all litigation-related costs associated with respirator mask/asbestos litigation matters within the Safety and Industrial business segment (along with other Safety and Industrial matters already included therein, such as those related to Combat Arms Earplugs).
Business Segment Information
(Millions)Three months ended
June 30,		Six months ended
June 30,
Net Sales2022202120222021
Safety and Industrial2,924 3,029 5,975 6,128 
Transportation and Electronics2,268 2,355 4,608 4,751 
Health Care2,179 2,165 4,303 4,234 
Consumer1,330 1,400 2,643 2,689 
Corporate and Unallocated1 1 2 (1)
Total Company8,702 8,950 17,531 17,801 
Three months ended
June 30,		Six months ended
June 30,
Operating Performance2022202120222021
Safety and Industrial(707)662 (71)1,414 
Transportation and Electronics476 513 972 1,069 
Health Care494 548 942 1,012 
Consumer247 290 471 559 
Total business segment operating income510 2,013 2,314 4,054 
Corporate and Unallocated
Corporate special items:
Net costs for significant litigation(379)(75)(566)(145)
Other corporate expense - net(21)33 3 56 
Total Corporate and Unallocated(400)(42)(563)(89)
Total Company operating income110 1,971 1,751 3,965 
Other expense/(income), net50 33 88 82 
Income before income taxes60 1,938 1,663 3,883 
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 PFAS-related other environmental matters (see Note 14), gain/loss on sale of businesses (see Note 3), and divestiture-related restructuring costs. 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 contract manufacturing, transition services and other arrangements 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.