XML 109 R97.htm IDEA: XBRL DOCUMENT
v3.19.1

Business Segments (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 30, 2019 segment | Mar. 31, 2019 segment | Mar. 31, 2019 segment | Dec. 31, 2018 USD ($)
Business Segment Information |  |  |  |
Number of business segments | segment |  | 5 | 5 |
Business Segments in Aggregate |  |  |  |
Business Segment Information |  |  |  |
Increase (decrease) in net sales due to continued alignment of customer account activity |  |  |  | $ (32)
Increase (decrease) in operating income due to continued alignment of customer account activity |  |  |  | (8)
Increase (decrease) in operating income due to additional actions impacting business segment reporting |  |  |  | (58)
Safety and Graphics |  |  |  |
Business Segment Information |  |  |  |
Increase (decrease) in net sales due to additional actions impacting business segment reporting |  |  |  | (12)
Increase (decrease) in operating income due to additional actions impacting business segment reporting |  |  |  | (1)
Consumer |  |  |  |
Business Segment Information |  |  |  |
Increase (decrease) in net sales due to additional actions impacting business segment reporting |  |  |  | 12
Increase (decrease) in operating income due to additional actions impacting business segment reporting |  |  |  | 1
Corporate and Unallocated |  |  |  |
Business Segment Information |  |  |  |
Increase (decrease) in operating income due to additional actions impacting business segment reporting |  |  |  | 58
Elimination of Dual Credit |  |  |  |
Business Segment Information |  |  |  |
Increase (decrease) in net sales due to continued alignment of customer account activity |  |  |  | (32)
Increase (decrease) in operating income due to continued alignment of customer account activity |  |  |  | $ (8)
Forecast |  |  |  |
Business Segment Information |  |  |  |
Number of business segments | segment | 4 |  |  |

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

X
- 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
Name: | mmm_IncreaseDecreaseInNetSalesDueToContinuedAlignmentOfCustomerAccountActivity
Namespace Prefix: | mmm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- 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
Name: | mmm_IncreaseDecreaseInOperatingIncomeDueToContinuedAlignmentOfCustomerAccountActivity
Namespace Prefix: | mmm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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 No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mmm_BusinessSegmentsInAggregateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mmm_SafetyAndGraphicsSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mmm_ConsumerSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |