COMMITMENTS AND CONTINGENCIES 2 (Details) $ in Millions	6 Months Ended
Jun. 30, 2019 USD ($)
Asbestos Related Liabilities [Member]
Loss Contingency Accrual [Roll Forward]
Asbestos Related Liabilities, Beginning of Period	$ 2,514
Accrual for update to estimated liability	46
Asbestos related liability payments	(89)
Asbestos Related Liabilities, End of Period	2,471
Asbestos Related Liabilities Insurance Recoveries [Line Items]
Insurance Recoveries, beginning of period	477
Insurance receipts for asbestos related liabilities	(37)
Insurance receivables settlements	22
Insurance recoveries, end of period	462
Bendix Asbestos Loss Contingency Liability [Member]
Loss Contingency Accrual [Roll Forward]
Asbestos Related Liabilities, Beginning of Period	1,623
Accrual for update to estimated liability	33
Asbestos related liability payments	(87)
Asbestos Related Liabilities, End of Period	1,569
Asbestos Related Liabilities Insurance Recoveries [Line Items]
Insurance Recoveries, beginning of period	170
Insurance receipts for asbestos related liabilities	(26)
Insurance receivables settlements	19
Insurance recoveries, end of period	163
Narco Asbestos Loss Contingency Liability [Member]
Loss Contingency Accrual [Roll Forward]
Asbestos Related Liabilities, Beginning of Period	891
Accrual for update to estimated liability	13
Asbestos related liability payments	(2)
Asbestos Related Liabilities, End of Period	902
Asbestos Related Liabilities Insurance Recoveries [Line Items]
Insurance Recoveries, beginning of period	307
Insurance receipts for asbestos related liabilities	(11)
Insurance receivables settlements	3
Insurance recoveries, end of period	$ 299

Listing of asbestos related liabilities, insurance recoveries

No definition available.

Name:	hon_AsbestosRelatedLiabilitiesInsuranceRecoveriesAbstract
Namespace Prefix:	hon_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Insurance receivables settlements and write-offs

+ References

No definition available.

+ Details

Name:	hon_LossContingencyRelatedReceivableSettlementsAndWriteoffs
Namespace Prefix:	hon_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

+ Details

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash outflow reducing loss contingency liability.

+ References

+ Details

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

- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

+ Details

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

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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

- Definition

Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12053-110248

+ Details

Name:	us-gaap_LossContingencyReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of cash inflow from the collection of receivables related to a loss contingency.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12053-110248

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3367-108585

+ Details

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

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=hon_AsbestosRelatedLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=hon_BendixAsbestosLossContingencyLiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=hon_NarcoAsbestosLossContingencyLiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: