XML 53 R41.htm IDEA: XBRL DOCUMENT
v3.19.2

Significant Accounting Policies - Foreign Currency Translation (Details) $ in Millions, $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) | Sep. 30, 2018 item | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Dec. 31, 2018 | Jun. 30, 2019 ARS ($)
Foreign Currency Translation |  |  |  |  |  |  |
Pre-tax charge | $ 256 |  | $ 51 | $ 304 | $ 93 |  |
Foreign currency transaction loss | 55 |  |  | $ 121 |  |  |
Venezuela |  |  |  |  |  |  |
Foreign Currency Translation |  |  |  |  |  |  |
Pre-tax charge | 162 |  |  |  |  |  |
Foreign currency transaction loss | $ (144) |  |  |  |  |  |
Subsidiary | Venezuela |  |  |  |  |  |  |
Foreign Currency Translation |  |  |  |  |  |  |
Denominator used to determine conversion from Venezuelan Bolivar to Sovereign Bolivar. | item |  | 100,000 |  |  |  |  |
Subsidiary | Argentina |  |  |  |  |  |  |
Foreign Currency Translation |  |  |  |  |  |  |
Threshold percentage used to determine if economic environment is highly inflationary |  |  | 100.00% |  |  |  |
Number of years used to determine if economic environment is highly inflationary |  |  |  | 3 years |  |  |
Foreign currency exchange rate |  |  |  |  |  |  | 43
Maximum | Subsidiary | Argentina |  |  |  |  |  |  |
Foreign Currency Translation |  |  |  |  |  |  |
Operating income of subsidiaries as percent of consolidated amount high end of range |  |  |  |  |  | 0.50% |
Balance of the Company's overall net monetary assets valued functional currency |  |  |  |  |  |  | $ 200

X
- Definition The maximum balance of the Company's overall net monetary assets valued functional currency. + References No definition available. + Details
Name: | mmm_BalanceOfCompanyNetMonetaryAssets
Namespace Prefix: | mmm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The denominator used to determine the conversion from the Venezuelan Bolivar to the Sovereign Bolivar. + References No definition available. + Details
Name: | mmm_DenominatorForCurrencyConversionFromVenezuelanBolivarToSovereignBolivarForVenezuelanSubsidiary
Namespace Prefix: | mmm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The threshold percentage for determining whether an economic environment is highly inflationary for purposes of determining the functional currency of an entity. + References No definition available. + Details
Name: | mmm_HighlyInflationaryEconomicEnvironmentInflationThresholdPercent
Namespace Prefix: | mmm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of years used in the calculation to determine whether an economic environment is highly inflationary for purposes of determining the functional currency of an entity. + References No definition available. + Details
Name: | mmm_HighlyInflationaryEconomicEnvironmentNumberOfYearsUsedInCalculation
Namespace Prefix: | mmm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The operating income of a subsidiary (located in the highly inflationary country of Venezuela) as a percentage of the consolidated operating income, high end of range. + References No definition available. + Details
Name: | mmm_OperatingIncomeOfSubsidiaryInHighlyInflationaryCountryPercentOfConsolidatedAmountMaximum
Namespace Prefix: | mmm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Foreign exchange rate used to remeasure amounts denominated in a currency other than functional currency into functional currency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521 + Details
Name: | us-gaap_ForeignCurrencyExchangeRateRemeasurement1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109240200&loc=d3e30700-110894 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109240200&loc=d3e30690-110894 + Details
Name: | us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
Name: | us-gaap_NonoperatingIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=country_VE
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_SubsidiaryOfCommonParentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_AR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |