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Commitments and Contingencies - Respirator and Environmental (Details) | 3 Months Ended | 12 Months Ended
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Mar. 31, 2019 USD ($) | Mar. 31, 2019 USD ($) defendant | Mar. 31, 2019 USD ($) individual | Mar. 31, 2019 USD ($) facility | Mar. 31, 2019 USD ($) lawsuit | Mar. 31, 2019 USD ($) case | Mar. 31, 2019 USD ($) $ / shares | Mar. 31, 2019 USD ($) item | Mar. 31, 2019 USD ($) | Mar. 31, 2018 $ / shares | Dec. 31, 2018 item
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Diluted earnings per share | $ / shares |  |  |  |  |  |  | $ 1.51 |  |  | $ 0.98 |
Respirator Mask/Asbestos Litigation |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Total number of named claimants | item |  |  |  |  |  |  |  | 2,335 |  |  | 2,320
Number of years company has been the defendant in Respirator Mask/Asbestos Litigation | 20 years |  |  |  |  |  |  |  |  |  |
Number of total claims the Company prevailed after being taken to trial |  |  |  |  | 2 | 14 |  |  |  |  |
Number of total claims taken to trial | case |  |  |  |  |  | 15 |  |  |  |  |
Increase in liabilities, gross |  |  |  |  |  |  |  |  | $ 313,000,000 |  |
Increase in liabilities, net |  |  |  |  |  |  |  |  | 238,000,000 |  |
Diluted earnings per share | $ / shares |  |  |  |  |  |  | $ 0.40 |  |  |  |
Payments for fees and settlements related to litigation |  |  |  |  |  |  |  |  | 32,000,000 |  |
Insurance receivables | $ 4,000,000 | $ 4,000,000 | $ 4,000,000 | $ 4,000,000 | $ 4,000,000 | $ 4,000,000 | $ 4,000,000 | $ 4,000,000 | 4,000,000 |  |
Respirator Mask/Asbestos Litigation | State court of California |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of total claims the Company prevailed after being taken to trial | lawsuit |  |  |  |  | 1 |  |  |  |  |  |
Respirator Mask/Asbestos Litigation | State court of Kentucky |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of unnamed defendant | individual |  |  | 2 |  |  |  |  |  |  |  |
Litigation settlement awarded |  |  |  |  |  |  |  |  | 2,000,000 |  |
Amount of punitive damages awarded |  |  |  |  |  |  |  |  | 63,000,000 |  |
Settlement amount paid |  |  |  |  |  |  |  |  | 65,000,000 |  |
Respirator Mask/Asbestos Litigation | Kentucky and West Virginia |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Settlement amount paid |  |  |  |  |  |  |  |  | 340,000,000 |  |
Respirator Mask/Asbestos Litigation - State of West Virginia |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of additional defendants | 2 |  |  |  |  |  |  |  |  |  |
Accrued loss contingency reserve | $ 0 | 0 | $ 0 | 0 | $ 0 | 0 | 0 | 0 | 0 |  |
Respirator Mask/Asbestos litigation - Excluding Aearo Technologies |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Accrued loss contingency reserve | 954,000,000 | 954,000,000 | 954,000,000 | 954,000,000 | 954,000,000 | 954,000,000 | 954,000,000 | 954,000,000 | 954,000,000 |  |
Increase (decrease) accrued loss contingency reserve |  |  |  |  |  |  |  |  | 281,000,000 |  |
Respirator Mask/Asbestos Litigation - Aearo Technologies |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Accrued loss contingency reserve | 28,000,000 | 28,000,000 | 28,000,000 | 28,000,000 | 28,000,000 | 28,000,000 | 28,000,000 | 28,000,000 | 28,000,000 |  |
Quarterly fee paid to Cabot to retain responsibility and liability for products manufactured before July 11, 1995 |  |  |  |  |  |  |  |  | 100,000 |  |
Environmental Matters - Remediation |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Accrued loss contingency reserve | $ 25,000,000 | 25,000,000 | 25,000,000 | 25,000,000 | 25,000,000 | 25,000,000 | 25,000,000 | 25,000,000 | 25,000,000 |  |
Number of years remediation payments expected to be paid for applicable sites | 20 years |  |  |  |  |  |  |  |  |  |
Environmental Matters - Other |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Accrued loss contingency reserve | $ 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |
Insurance receivables | $ 33,000,000 | $ 33,000,000 | 33,000,000 | 33,000,000 | 33,000,000 | 33,000,000 | 33,000,000 | $ 33,000,000 | 33,000,000 |  |
Increase (decrease) in insurance recovery receivable |  |  |  |  |  |  |  |  | 25,000,000 |  |
Environmental Matters - Regulatory Activities |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of years after phase-out decision in May 2000 that the Company stopped manufacturing and using vast majority of perfluorooctanyl compounds | 2 years |  |  |  |  |  |  |  |  |  |
Amount of PFOA and PFOS found in drinking water, either individually or combined, that are allowed per the EPA's announced lifetime health advisory levels in parts per trillion | item |  |  |  |  |  |  |  | 70 |  |  |
Amount of PFOA in drinking water allowed per provisional health advisories in parts per trillion (superseded) | item |  |  |  |  |  |  |  | 400 |  |  |
Amount of PFOS in drinking water allowed per provisional health advisories in parts per trillion (superseded) | item |  |  |  |  |  |  |  | 200 |  |  |
Number of PFCs the EPA has required to have public water system suppliers monitor | item |  |  |  |  |  |  |  | 6 |  |  |
Number compounds EPA asked for public comment on draft toxicity assessments for PFAS compounds, including PFBS | item |  |  |  |  |  |  |  | 2 |  |  |
Number of public water supplies the EPA reported results | item |  |  |  |  |  |  |  | 4,920 |  |  |
Number of water supplies that reported above advisory level with PFOA | item |  |  |  |  |  |  |  | 13 |  |  |
Number of water supplies that reported above advisory level with PFOS | item |  |  |  |  |  |  |  | 46 |  |  |
Number of water supplies that reported above advisory level with both PFOA and PFOS under technical advisory issued by EPA in September 2016 | item |  |  |  |  |  |  |  | 65 |  |  |
Environmental Matters - Regulatory Activities | Minimum |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of water supply samples used to test for PFOA and PFOS under the EPA lifetime health advisory program | item |  |  |  |  |  |  |  | 1 |  |  |
Environmental Matters - Regulatory Activities | Alabama |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of years covered by permit for sludge containing PFAS | 20 years |  |  |  |  |  |  |  |  |  |
Environmental Matters - Regulatory Activities | Minnesota Department of Health |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Amount of PFOA in drinking water allowed per Minnesota Department of Health in parts per trillion | item |  |  |  |  |  |  |  | 35 |  |  |
Amount of PFOS in drinking water allowed per Minnesota Department of Health in parts per trillion | item |  |  |  |  |  |  |  | 27 |  |  |
Additional amounts of PFOS in drinking water allowed per Minnesota Department of Health in parts per trillion | item |  |  |  |  |  |  |  | 15 |  |  |
Amount of PFHxS in drinking water allowed per Minnesota Department of Health in parts per trillion | item |  |  |  |  |  |  |  | 47 |  |  |
Amount of PFBS in drinking water allowed per Minnesota Department of Health in parts per billion | item |  |  |  |  |  |  |  | 2 |  |  |
Environmental Matters - Litigation | State Court of Lawrence County, Alabama |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Total number of named claimants | item |  |  |  |  |  |  |  | 200 |  |  |
Environmental Matters - Litigation | U.S. District Court for the Northern District of Alabama |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of unnamed defendant | defendant |  | 3 |  |  |  |  |  |  |  |  |
Environmental Matters - Litigation | Alabama |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Litigation settlement awarded |  |  |  |  |  |  |  |  | 35,000,000 |  |
Number of local water works for whom the water authority supplies water | item |  |  |  |  |  |  |  | 5 |  |  |
Environmental Matters - Litigation | Morgan County, Alabama |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Total number of named claimants | item |  |  |  |  |  |  |  | 3 |  |  |
Environmental Matters - Litigation | Minnesota |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Litigation settlement awarded |  |  |  |  |  |  |  |  | 897,000,000 |  |
Settlement amount paid |  |  |  |  |  |  |  |  | 850,000,000 |  |
Amount the State's damages expert contended that the State incurred in damages | $ 5,000,000,000 | $ 5,000,000,000 | 5,000,000,000 | 5,000,000,000 | 5,000,000,000 | 5,000,000,000 | 5,000,000,000 | $ 5,000,000,000 | 5,000,000,000 |  |
Environmental Matters - Litigation | Lake Elmo, Minnesota | Maximum |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Settlement amount paid |  |  |  |  |  |  |  |  | 5,000,000 |  |
Environmental Matters - Other Environmental Litigation |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Accrued loss contingency reserve | $ 292,000,000 | $ 292,000,000 | $ 292,000,000 | $ 292,000,000 | $ 292,000,000 | $ 292,000,000 | $ 292,000,000 | $ 292,000,000 | 292,000,000 |  |
Increase (decrease) accrued loss contingency reserve |  |  |  |  |  |  |  |  | 235,000,000 |  |
Increase in liabilities, net |  |  |  |  |  |  |  |  | 186,000,000 |  |
Diluted earnings per share | $ / shares |  |  |  |  |  |  | $ 0.32 |  |  |  |
Number of landfills tested by the entity for environmental matters and litigation related to historical PFAS manufacturing operations | item |  |  |  |  |  |  |  | 4 |  |  |
Number of former disposal sites with PFC present in soil and groundwater in Washington County, Minnesota | item |  |  |  |  |  |  |  | 2 |  |  |
Environmental Matters - Other Environmental Litigation | New Jersey |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of unnamed defendant | defendant |  | 120 |  |  |  |  |  |  |  |  |
Approximate number of miles of a river seeking to be cleaned | item |  |  |  |  |  |  |  | 8 |  |  |
The value the award the plaintiff seeks |  |  |  |  |  |  |  |  | $ 165,000,000 |  |
Number of chemicals of concern in the sediment | item |  |  |  |  |  |  |  | 8 |  |  |
Number of commercial drum conditioning facilities | item |  |  |  |  |  |  |  | 2 |  |  |
Environmental Matters - Aqueous Film Forming Foam Litigation |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of putative class action and other lawsuits | item |  |  |  |  |  |  |  | 96 |  |  |
Environmental Matters - Aqueous Film Forming Foam Litigation | U.S. Judicial Panel on Multidistrict Litigation (MDL) |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of putative class action and other lawsuits | lawsuit |  |  |  |  | 88 |  |  |  |  |  |
Environmental Matters - Other PFAS-related Environmental Litigation |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of facilities related to the manufacture and disposal of PFAS | facility |  |  |  | 5 |  |  |  |  |  |  |
Environmental Matters - Other PFAS-related Environmental Litigation | U.S. District Court of New York State |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of lawsuits filed | lawsuit |  |  |  |  | 22 |  |  |  |  |  |
Number of putative class action and other lawsuits | lawsuit |  |  |  |  | 1 |  |  |  |  |  |
Environmental Matters - Other PFAS-related Environmental Litigation | Alabama |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of putative class action and other lawsuits | lawsuit |  |  |  |  | 2 |  |  |  |  |  |
Environmental Matters - Other PFAS-related Environmental Litigation | Delaware |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of putative class action and other lawsuits | lawsuit |  |  |  |  | 1 |  |  |  |  |  |
Environmental Matters - Other PFAS-related Environmental Litigation | Maine |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of lawsuits filed | lawsuit |  |  |  |  | 1 |  |  |  |  |  |
Environmental Matters - Other PFAS-related Environmental Litigation | New Jersey |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of lawsuits filed | lawsuit |  |  |  |  | 2 |  |  |  |  |  |
Number of putative class action and other lawsuits | lawsuit |  |  |  |  | 1 |  |  |  |  |  |
Environmental Matters - Other PFAS-related Environmental Litigation | Salem County, New Jersey |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of lawsuits filed | lawsuit |  |  |  |  | 1 |  |  |  |  |  |
Environmental Matters - Other PFAS-related Environmental Litigation | Michigan |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of lawsuits filed | lawsuit |  |  |  |  | 214 |  |  |  |  |  |
Number of putative class action and other lawsuits | lawsuit |  |  |  |  | 2 |  |  |  |  |  |
Environmental Matters - Other PFAS-related Environmental Litigation | United States |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of facilities related to the manufacture and disposal of PFAS | facility |  |  |  | 3 |  |  |  |  |  |  |
Environmental Matters - Other PFAS-related Environmental Litigation | Europe |  |  |  |  |  |  |  |  |  |  |
Loss contingencies |  |  |  |  |  |  |  |  |  |  |
Number of facilities related to the manufacture and disposal of PFAS | facility |  |  |  | 2 |  |  |  |  |  |  |

X
- Definition This element represents the additional amounts of PFOS chemicals allowed in drinking water (in parts per trillion) per guidance from the Minnesota Department of Health. + References No definition available. + Details
Name: | mmm_AdditionalAmountsOfPfoaInDrinkingWaterAllowedPerMinnesotaDepartmentOfHealth
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of perfluorooctanoate (PFOA) in drinking water allowed per the guidance of the provisional health advisories issued by the EPA in 2009 under the Safe Drinking Water Act (presented parts per trillion). + References No definition available. + Details
Name: | mmm_AmountOfPFOAInDrinkingWaterAllowedPerProvisionalHealthAdvisories
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of perfluorooctane sulfonate (PFOS) in drinking water allowed per the guidance of the provisional health advisories issued by the EPA in 2009 under the Safe Drinking Water Act (presented in parts per trillion). + References No definition available. + Details
Name: | mmm_AmountOfPFOSInDrinkingWaterAllowedPerProvisionalHealthAdvisories
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the amount of PFBS chemicals allowed in drinking water (in parts per billion) per guidance from the Minnesota Department of Health. + References No definition available. + Details
Name: | mmm_AmountOfPfbsInDrinkingWaterAllowedPerMinnesotaDepartmentOfHealth
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of Perfluoroocotanoate (PFOA) and Perfluorooctane sulfonate (PFOS) in drinking water allowed per the EPA's announced lifetime health advisory levels (presented as parts per trillion). + References No definition available. + Details
Name: | mmm_AmountOfPfoaAndPfosInDrinkingWaterAllowedPerEpaLifetimeHealthAdvisoryLevels
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the amount of PFOA chemicals allowed in drinking water (in parts per trillion) as per guidance from the Minnesota Department of Health. + References No definition available. + Details
Name: | mmm_AmountOfPfoaInDrinkingWaterAllowedPerMinnesotaDepartmentOfHealth
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the amount of PFOS chemicals allowed in drinking water (in parts per trillion) per guidance from the Minnesota Department of Health. + References No definition available. + Details
Name: | mmm_AmountOfPfosInDrinkingWaterAllowedPerMinnesotaDepartmentOfHealth
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the amount of PFHxS chemicals allowed in drinking water (in parts per trillion) per guidance from the Minnesota Department of Health. + References No definition available. + Details
Name: | mmm_AmountsOfPfhxsInDrinkingWaterAllowedPerMinnesotaDepartmentOfHealth
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of landfills tested by the entity for environmental matters and litigation related to historical PFAS manufacturing operations. + References No definition available. + Details
Name: | mmm_EnvironmentalMattersAndLitigationRelatedToHistoricalPFSManufacturingOperationsNumberOfLandfillsTested
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net increase (decrease) during the reporting period in asbestos and environmental claims reserve. + References No definition available. + Details
Name: | mmm_LiabilityForAsbestosAndEnvironmentalClaimsNetPeriodIncreaseDecreaseNet
Namespace Prefix: | mmm_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of punitive damages awarded. + References No definition available. + Details
Name: | mmm_Litigationsettlementexpensepunitive
Namespace Prefix: | mmm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of years the Company expects it will pay the amounts recorded over the periods of remediation for the applicable sites. + References No definition available. + Details
Name: | mmm_LossContingencyAccrualAtCarryingValueRemediationPaymentsYears
Namespace Prefix: | mmm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of damages the State incurred as detailed in the State’s damages expert submitted report. + References No definition available. + Details
Name: | mmm_LossContingencyAmountDamagesIncurred
Namespace Prefix: | mmm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The approximate number of miles of the river plaintiffs are seeking to be cleaned. + References No definition available. + Details
Name: | mmm_LossContingencyApproximateMilesOfRiverToBeCleanedNumber
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of claims that the Company prevailed after being taken to trial. + References No definition available. + Details
Name: | mmm_LossContingencyClaimsPrevailedAfterTakenToTrialNumber
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of claims settled and taken to trial. + References No definition available. + Details
Name: | mmm_LossContingencyClaimsSettledAndTakenToTrialTotalNumber
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of years the company has been the defendant in Respirator Mask/Asbestos Litigation. + References No definition available. + Details
Name: | mmm_LossContingencyClaimsYearsInLitigationNumber
Namespace Prefix: | mmm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of former disposal sites with a presence of PFCs in the soil and groundwater. + References No definition available. + Details
Name: | mmm_LossContingencyFormerDisposalSitesWithPFCNumber
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of years the entity incorporated wastewater treatment plant sludge containing PFAS pursuant to a permit issued by ADEM. + References No definition available. + Details
Name: | mmm_LossContingencyWastewaterTreatmentPlantSludgeContainingPfasNumberOfYearsPursuantToPermit
Namespace Prefix: | mmm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of chemicals of concern in the sediment. + References No definition available. + Details
Name: | mmm_NumberOfChemicalsOfConcern
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of commercial drum conditioning facilities. + References No definition available. + Details
Name: | mmm_NumberOfCommercialDrumConditioningFacilities
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number compounds EPA asked for public comment on draft toxicity assessments for PFAS compounds, including PFBS. + References No definition available. + Details
Name: | mmm_NumberOfCompoundsForWhichEpaHasAskedForPublicCommentRegardingPossibleHealthEffectsOfVariousPerfluorinatedCompounds
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of facilities related to the manufacture and disposal of PFAS. + References No definition available. + Details
Name: | mmm_NumberOfFacilitiesRelatedToManufactureAndDisposalOfPFS
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of local water works for whom the water authority supplies supply water. + References No definition available. + Details
Name: | mmm_NumberOfLocalWaterWorksWaterAuthoritySuppliesWater
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of PFCs the EPA has required to have public water system suppliers monitor. + References No definition available. + Details
Name: | mmm_NumberOfPFCsEPARequiredToHavePublicWaterSystemSuppliersMonitor
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of public water supplies for which the EPA reported results. + References No definition available. + Details
Name: | mmm_NumberOfPublicWaterSuppliesEpaReportedResults
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of putative class action and other lawsuits. + References No definition available. + Details
Name: | mmm_NumberOfPutativeClassActionAndOtherLawsuits
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of samples used of water supplies used by the EPA to test for lifetime health advisory amounts of PFOA and PFOS chemicals. + References No definition available. + Details
Name: | mmm_NumberOfSamplesFromWaterSuppliesUsedForTesting
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
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