XML 101 R91.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Long-Term Debt and Short-Term Borrowings - Long-Term Debt Issuances (Details) € in Millions, $ in Millions | 1 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Oct. 31, 2017 USD ($) | Aug. 31, 2015 USD ($) DerivativeInstrument | Dec. 31, 2017 USD ($) | Sep. 30, 2016 USD ($) | May 31, 2016 EUR (€) | May 31, 2015 EUR (€)
Debt instrument |  |  |  |  |  |
Number of fixed-to-floating interest rate swaps | DerivativeInstrument |  | 2 |  |  |  |
Fixed rate medium term note due 2020 |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Principal amount |  |  | $ 200.0 |  |  |
Fixed rate medium term notes due 2023 |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Principal amount | $ 650.0 |  | 650.0 |  |  |
Term of debt instrument | 5 years 6 months |  |  |  |  |
Interest rate, stated percentage (as a percent) | 2.25% |  |  |  |  |
Fixed rate medium term notes due 2027 |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Principal amount | $ 850.0 |  | 850.0 |  |  |
Term of debt instrument | 10 years |  |  |  |  |
Interest rate, stated percentage (as a percent) | 2.875% |  |  |  |  |
Fixed rate medium term notes due 2047 |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Principal amount | $ 500.0 |  | $ 500.0 |  |  |
Term of debt instrument | 30 years |  |  |  |  |
Interest rate, stated percentage (as a percent) | 3.625% |  |  |  |  |
May 2016 Euro medium term notes issued |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Principal amount | € |  |  |  |  | € 1,000.0 |
September 2016 medium term notes issued |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Principal amount |  |  |  | $ 1,750.0 |  |
May 2015 Euro medium term notes issued |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Principal amount | € |  |  |  |  |  | € 1,750.0
August 2015 medium term notes issued |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Principal amount |  | $ 1,500.0 |  |  |  |
Interest rate swap contracts | Fixed rate medium term note due 2020 |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Derivative notional amount |  | $ 300.0 |  |  |  |
Term of derivative contract |  | 5 years |  |  |  |
Interest rate swap contracts | Fixed rate medium term note due 2018 |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Derivative notional amount |  | $ 450.0 |  |  |  |
Term of derivative contract |  | 3 years |  |  |  |

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of derivative instruments of a particular group held by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeNumberOfInstrumentsHeld
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DerivativeRemainingMaturity1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mmm_FixedRateMediumTermNoteDue2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mmm_FixedRateMediumTermNotesDue2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mmm_FixedRateMediumTermNotesDue2027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mmm_FixedRateMediumTermNotesDue2047Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mmm_May2016EuroMediumTermNotesIssuedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mmm_September2016MediumTermNotesIssuedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mmm_May2015EuroMediumTermNotesIssuedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mmm_August2015MediumTermNotesIssuedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mmm_FixedRateMediumTermNoteDue2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |