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v3.20.2

Business Segments (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2020 USD ($) | Sep. 30, 2020 segment
Business Segment Information |  |
Number of business segments | segment |  | 4
Business Segments in Aggregate |  |
Business Segment Information |  |
Increase (decrease) in net sales due to continued alignment of customer account activity | $ (42) |
Increase (decrease) in operating income due to continued alignment of customer account activity | (10) |
Safety and Industrial |  |
Business Segment Information |  |
Increase (decrease) in net sales due to additional actions impacting business segment reporting | (35) |
Increase (decrease) in operating income due to additional actions impacting business segment reporting | (11) |
Consumer |  |
Business Segment Information |  |
Increase (decrease) in net sales due to additional actions impacting business segment reporting | 35 |
Increase (decrease) in operating income due to additional actions impacting business segment reporting | 11 |
Elimination of Dual Credit |  |
Business Segment Information |  |
Increase (decrease) in net sales due to continued alignment of customer account activity | (42) |
Increase (decrease) in operating income due to continued alignment of customer account activity | $ (10) |

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- Definition The element represents the increase or decrease in net sales related to additional actions impacting business segment reporting. + References No definition available. + Details
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Namespace Prefix: | mmm_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- Definition The element represents the increase or decrease in net sales related to the continued alignment of customer account activity. + References No definition available. + Details
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Namespace Prefix: | mmm_
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- Definition The element represents the increase or decrease in operating income related to additional actions impacting business segment reporting. + References No definition available. + Details
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- Definition The element represents the increase or decrease in operating income related to the continued alignment of customer account activity. + References No definition available. + Details
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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