XML 68 R55.htm IDEA: XBRL DOCUMENT
v3.19.2

Income Taxes Income Tax Examination (Details) $ in Millions | 3 Months Ended
--- | ---
Jun. 30, 2019 USD ($)
Closure of IRS audits of 2014-2016 and Italian Tax Authority amnesty program [Domain] |
Income Tax Examination [Line Items] |
Tax Settlement Gain (Loss) Noncash | $ 307
Interest Income [Member] | Closure of IRS audits of 2014-2016 and Italian Tax Authority amnesty program [Domain] |
Income Tax Examination [Line Items] |
Tax Settlement Gain (Loss) Noncash | 56
Minimum [Member] |
Income Tax Examination [Line Items] |
Tax Settlement Potential Gain (Loss) Noncash | 25
Maximum [Member] |
Income Tax Examination [Line Items] |
Tax Settlement Potential Gain (Loss) Noncash | $ 70

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

X
- Definition Tax Settlement Gain (Loss) Noncash + References No definition available. + Details
Name: | utx_TaxSettlementGainLossNoncash
Namespace Prefix: | utx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Tax Settlement Potential Gain (Loss) Noncash + References No definition available. + Details
Name: | utx_TaxSettlementPotentialGainLossNoncash
Namespace Prefix: | utx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ReasonablyPossibleSignificantChangeInUnrecognizedTaxBenefitsByItemAxis=utx_ClosureofIRSauditsof20142016andItalianTaxAuthorityamnestyprogramDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_InterestIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
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: |