FINANCIAL INSTRUMENTS AND FAIR VALUE MEASURES 5 (Details) - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Revenue	$ 8,884,000,000	$ 10,392,000,000
Cost of products and services sold	5,879,000,000	7,191,000,000
SG&A	1,363,000,000	1,475,000,000
Other (income) expense	(285,000,000)	(268,000,000)
Interest and other financial charges	85,000,000	83,000,000
Designated as Hedging Instrument [Member] \| Foreign currency exchange contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain or (loss) on net investment hedges recognized in Accumulated other comprehensive income (loss)	7,000,000	0
Designated as Hedging Instrument [Member] \| Gain or (loss) on cash flow hedges [Member] \| Foreign currency exchange contracts [Member] \| Revenue [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount reclassified from accumulated other comprehensive income into income	0	(3,000,000)
Amount excluded from effectiveness testing recognized in earnings using an amortization approach	0
Designated as Hedging Instrument [Member] \| Gain or (loss) on cash flow hedges [Member] \| Foreign currency exchange contracts [Member] \| Cost of Products Sold [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount reclassified from accumulated other comprehensive income into income	16,000,000	(22,000,000)
Amount excluded from effectiveness testing recognized in earnings using an amortization approach	6,000,000
Designated as Hedging Instrument [Member] \| Gain or (loss) on cash flow hedges [Member] \| Foreign currency exchange contracts [Member] \| SG&A [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount reclassified from accumulated other comprehensive income into income	0	2,000,000
Amount excluded from effectiveness testing recognized in earnings using an amortization approach	0
Designated as Hedging Instrument [Member] \| Gain or (loss) on cash flow hedges [Member] \| Foreign currency exchange contracts [Member] \| Other (income) Expense [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount reclassified from accumulated other comprehensive income into income	24,000,000	0
Amount excluded from effectiveness testing recognized in earnings using an amortization approach	9,000,000
Designated as Hedging Instrument [Member] \| Gain or (loss) on cash flow hedges [Member] \| Foreign currency exchange contracts [Member] \| Interest and Other Financial Charges [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount reclassified from accumulated other comprehensive income into income	0	0
Amount excluded from effectiveness testing recognized in earnings using an amortization approach	0
Designated as Hedging Instrument [Member] \| Gain or (loss) on fair value hedges \| Interest Rate Swap [Member] \| Revenue [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged items	0	0
Derivatives designated as hedges	0	0
Designated as Hedging Instrument [Member] \| Gain or (loss) on fair value hedges \| Interest Rate Swap [Member] \| Cost of Products Sold [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged items	0	0
Derivatives designated as hedges	0	0
Designated as Hedging Instrument [Member] \| Gain or (loss) on fair value hedges \| Interest Rate Swap [Member] \| SG&A [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged items	0	0
Derivatives designated as hedges	0	0
Designated as Hedging Instrument [Member] \| Gain or (loss) on fair value hedges \| Interest Rate Swap [Member] \| Other (income) Expense [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged items	0	0
Derivatives designated as hedges	0	0
Designated as Hedging Instrument [Member] \| Gain or (loss) on fair value hedges \| Interest Rate Swap [Member] \| Interest and Other Financial Charges [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged items	(24,000,000)	46,000,000
Derivatives designated as hedges	24,000,000	(46,000,000)
Designated as Hedging Instrument [Member] \| Euro denominated long-term debt [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain or (loss) on net investment hedges recognized in Accumulated other comprehensive income (loss)	68,000,000	(82,000,000)
Designated as Hedging Instrument [Member] \| Net Investment Euro Denominated Commercial Paper [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain or (loss) on net investment hedges recognized in Accumulated other comprehensive income (loss)	71,000,000	(101,000,000)
Designated as Hedging Instrument [Member] \| Net Investment Cross Currency Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain or (loss) on net investment hedges recognized in Accumulated other comprehensive income (loss)	13,000,000	(58,000,000)
Products [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Revenue	6,713,000,000	8,234,000,000
Cost of products and services sold	$ 4,622,000,000	$ 5,905,000,000

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

Name:	us-gaap_CostOfGoodsAndServicesSold
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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

- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

+ Details

Name:	us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1),(2)
-URI http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986

+ Details

Name:	us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period.

+ References

+ Details

Name:	us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of unrealized gain (loss) included in earnings related to the fair value of the hedged item in an interest rate fair value hedge, offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

+ Details

Name:	us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Interest and debt related expenses associated with nonoperating financing activities of the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

+ Details

Name:	us-gaap_InterestAndDebtExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CCC
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109998896-113959

+ Details

Name:	us-gaap_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

+ 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 210.5-03.9)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

Name:	us-gaap_OtherNonoperatingIncomeExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

Name:	us-gaap_SellingGeneralAndAdministrativeExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_OtherOperatingIncomeExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=hon_InterestAndOtherFinancialChargesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=hon_AccumulatedNetGainLossFromDesignatedOrQualifyingFairValueHedgesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=hon_NetInvestmentEuroDenominatedLongtermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=hon_NetInvestmentEuroDenominatedCommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=hon_NetInvestmentCrossCurrencySwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=hon_ProductsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: