XML 109 R84.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Employee Benefit Plans (Pension Plans) (Fair Value Tables) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | $ 31,011 |  |
Ending Balance, Plan Assets |  | 30,555 |  | $ 31,011
Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 13,921 |  |
Ending Balance, Plan Assets |  | 13,570 |  | 13,921
Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 6,486 |  |
Ending Balance, Plan Assets |  | 5,210 |  | 6,486
Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 8,964 |  |
Ending Balance, Plan Assets |  | 9,936 |  | 8,964
Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 1,347 |  | 1,120
Realized gains (losses) |  | 65 |  | (1)
Unrealized gains relating to instruments still held in the reporting period |  | 23 |  | 147
Purchases, sales and settlements, net |  | (28) |  | 81
Ending Balance, Plan Assets |  | 1,407 |  | 1,347
Global Equities [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 5,884 |  |
Ending Balance, Plan Assets |  | 4,685 |  | 5,884
Global Equities [Member] | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 0 |  |
Ending Balance, Plan Assets |  | 0 |  | 0
Global Equities [Member] | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 5,884 |  |
Ending Balance, Plan Assets |  | 4,682 |  | 5,884
Global Equities [Member] | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 0 |  |
Ending Balance, Plan Assets |  | 3 |  | 0
Global Equities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 0 |  |
Ending Balance, Plan Assets |  | 0 |  | 0
Global Equity Commingled Funds [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [1] | 779 |  |
Ending Balance, Plan Assets | [1] | 367 |  | 779
Global Equity Commingled Funds [Member] | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [1] | 0 |  |
Ending Balance, Plan Assets | [1] | 0 |  | 0
Global Equity Commingled Funds [Member] | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [1] | 0 |  |
Ending Balance, Plan Assets | [1] | 0 |  | 0
Global Equity Commingled Funds [Member] | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [1] | 779 |  |
Ending Balance, Plan Assets | [1] | 367 |  | 779
Global Equity Commingled Funds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [1] | 0 |  |
Ending Balance, Plan Assets | [1] | 0 |  | 0
Enhanced Global Equities [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [2] | 853 |  |
Ending Balance, Plan Assets | [2] | 1,662 |  | 853
Enhanced Global Equities [Member] | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [2] | 0 |  |
Ending Balance, Plan Assets | [2] | 0 |  | 0
Enhanced Global Equities [Member] | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [2] | 237 |  |
Ending Balance, Plan Assets | [2] | 168 |  | 237
Enhanced Global Equities [Member] | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [2] | 616 |  |
Ending Balance, Plan Assets | [2] | 1,494 |  | 616
Enhanced Global Equities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [2] | 0 |  |
Ending Balance, Plan Assets | [2] | 0 |  | 0
Global Equity Funds at net asset value [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3] | 6,475 |  |
Ending Balance, Plan Assets | [3] | 7,090 |  | 6,475
Global Equity Funds at net asset value [Member] | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3] | 6,475 |  |
Ending Balance, Plan Assets | [3] | 7,090 |  | 6,475
Global Equity Funds at net asset value [Member] | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3] | 0 |  |
Ending Balance, Plan Assets | [3] | 0 |  | 0
Global Equity Funds at net asset value [Member] | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3] | 0 |  |
Ending Balance, Plan Assets | [3] | 0 |  | 0
Global Equity Funds at net asset value [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3] | 0 |  |
Ending Balance, Plan Assets | [3] | 0 |  | 0
Private Equities |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[4] | 1,517 |  |
Ending Balance, Plan Assets | [3],[4] | 1,361 |  | 1,517
Private Equities | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[4] | 1,335 |  |
Ending Balance, Plan Assets | [3],[4] | 1,239 |  | 1,335
Private Equities | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[4] | 0 |  |
Ending Balance, Plan Assets | [3],[4] | 0 |  | 0
Private Equities | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[4] | 0 |  |
Ending Balance, Plan Assets | [3],[4] | 0 |  | 0
Private Equities | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 182 | [3],[4] | 145
Realized gains (losses) |  | 46 |  | 3
Unrealized gains relating to instruments still held in the reporting period |  | 5 |  | 42
Purchases, sales and settlements, net |  | (111) |  | (8)
Ending Balance, Plan Assets | [3],[4] | 122 |  | 182
Governments [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 418 |  |
Ending Balance, Plan Assets |  | 314 |  | 418
Governments [Member] | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 0 |  |
Ending Balance, Plan Assets |  | 0 |  | 0
Governments [Member] | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 365 |  |
Ending Balance, Plan Assets |  | 260 |  | 365
Governments [Member] | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 53 |  |
Ending Balance, Plan Assets |  | 54 |  | 53
Governments [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 0 |  |
Ending Balance, Plan Assets |  | 0 |  | 0
Corporate Bonds [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 7,013 |  |
Ending Balance, Plan Assets |  | 7,637 |  | 7,013
Corporate Bonds [Member] | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 0 |  |
Ending Balance, Plan Assets |  | 0 |  | 0
Corporate Bonds [Member] | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 0 |  |
Ending Balance, Plan Assets |  | 0 |  | 0
Corporate Bonds [Member] | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 7,013 |  |
Ending Balance, Plan Assets |  | 7,637 |  | 7,013
Corporate Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 0 |  |
Ending Balance, Plan Assets |  | 0 |  | 0
Fixed Income Securities [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3] | 2,992 |  |
Ending Balance, Plan Assets | [3] | 2,788 |  | 2,992
Fixed Income Securities [Member] | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3] | 2,992 |  |
Ending Balance, Plan Assets | [3] | 2,788 |  | 2,992
Fixed Income Securities [Member] | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3] | 0 |  |
Ending Balance, Plan Assets | [3] | 0 |  | 0
Fixed Income Securities [Member] | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3] | 0 |  |
Ending Balance, Plan Assets | [3] | 0 |  | 0
Fixed Income Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3] | 0 |  |
Ending Balance, Plan Assets | [3] | 0 |  | 0
Real Estate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[5] | 2,254 |  |
Ending Balance, Plan Assets | [3],[5] | 1,815 |  | 2,254
Real Estate [Member] | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[5] | 1,079 |  |
Ending Balance, Plan Assets | [3],[5] | 513 |  | 1,079
Real Estate [Member] | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[5] | 0 |  |
Ending Balance, Plan Assets | [3],[5] | 0 |  | 0
Real Estate [Member] | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[5] | 10 |  |
Ending Balance, Plan Assets | [3],[5] | 17 |  | 10
Real Estate [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 1,165 | [3],[5] | 975
Realized gains (losses) |  | 19 |  | (4)
Unrealized gains relating to instruments still held in the reporting period |  | 18 |  | 105
Purchases, sales and settlements, net |  | 83 |  | 89
Ending Balance, Plan Assets | [3],[5] | 1,285 |  | 1,165
Other [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[6] | 2,040 |  |
Ending Balance, Plan Assets | [3],[6] | 2,108 |  | 2,040
Other [Member] | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[6] | 1,706 |  |
Ending Balance, Plan Assets | [3],[6] | 1,819 |  | 1,706
Other [Member] | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[6] | 0 |  |
Ending Balance, Plan Assets | [3],[6] | 0 |  | 0
Other [Member] | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[6] | 334 |  |
Ending Balance, Plan Assets | [3],[6] | 289 |  | 334
Other [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[6] | 0 |  |
Ending Balance, Plan Assets | [3],[6] | 0 |  | 0
Cash & Cash Equivalents [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[7] | 493 |  |
Ending Balance, Plan Assets | [3],[7] | 296 |  | 493
Cash & Cash Equivalents [Member] | Not Subject to Leveling [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[7] | 334 |  |
Ending Balance, Plan Assets | [3],[7] | 121 |  | 334
Cash & Cash Equivalents [Member] | Quoted price in active markets (Level 1) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[7] | 0 |  |
Ending Balance, Plan Assets | [3],[7] | 100 |  | 0
Cash & Cash Equivalents [Member] | Significant other observable inputs (Level 2) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[7] | 159 |  |
Ending Balance, Plan Assets | [3],[7] | 75 |  | 159
Cash & Cash Equivalents [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [3],[7] | 0 |  |
Ending Balance, Plan Assets | [3],[7] | 0 |  | 0
Subtotal [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets |  | 30,718 |  |
Ending Balance, Plan Assets |  | 30,123 |  | 30,718
Other Assets & Liabilities [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Beginning Balance, Plan Assets | [8] | 293 |  |
Ending Balance, Plan Assets | [8] | $ 432 |  | $ 293
[1] | Represents commingled funds that invest primarily in common stocks.
[2] | Represents enhanced equity separate account and commingled fund portfolios. A portion of the portfolio may include long-short market neutral and relative value strategies that invest in publicly traded, equity and fixed income securities, as well as derivatives of equity and fixed income securities and foreign currency.
[3] | In accordance with ASU 2015-07, Fair Value Measurement (Topic 820), certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented for the total pension benefits plan assets.
[4] | Represents limited partner investments with general partners that primarily invest in debt and equity.
[5] | Represents investments in real estate including commingled funds and directly held properties.
[6] | Represents insurance contracts and global balanced risk commingled funds consisting mainly of equity, bonds and some commodities.
[7] | Represents short-term commercial paper, bonds and other cash or cash-like instruments.
[8] | Represents trust receivables and payables that are not leveled.

X
- Definition Actual return on plan assets, separately identifying the amount related to assets sold during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920 + Details
Name: | us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Actual return on plan assets, separately identifying the amount related to assets still held at the reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920 + Details
Name: | us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=64937038&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6749337 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6520858 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) in plan assets from purchases, sales and settlement of plan obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(B) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(iv)(02)(B) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=utx_FairValueInputsNotSubjecttoLevelingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=utx_GlobalEquitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=utx_GlobalEquityCommingledFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=utx_EnhancedGlobalEquitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=utx_GlobalEquityFundsatnetassetvalueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_PrivateEquityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_USTreasuryAndGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_RealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=utx_OtherPensionPlanAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=utx_PensionPlanAssetsLeveledMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=utx_OtherAssetsAndLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |