Annual cap of amount payable to Honeywell under the indemnification and reimbursement agreement.

No definition available.

Name:	hon_IndemnificationAndReimbursementAgreementAnnualCap
Namespace Prefix:	hon_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amounts payable to Honeywell under the indemnification agreement will continue until the earlier of December 31, 2043, or December 31 of the third consecutive year under with the annual payment obligation has been less than $25 million.

+ References

No definition available.

+ Details

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Namespace Prefix:	hon_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Royalty payments owed to the Company under th Trademark License Agreement that the parties executed in connection with the spinoff.

+ References

No definition available.

+ Details

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

- Definition

Amount of indemnification and reimbursement receivable recorded in Other Assets.

+ References

No definition available.

+ Details

Name:	hon_IndemnityAndReimbursementReceivableRecordedInOtherAssets
Namespace Prefix:	hon_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of indemnification and reimbursement receivable recorded in Other Current Assets

+ References

No definition available.

+ Details

Name:	hon_IndemnityAndReimbursementReceivableRecordedInOtherCurrentAssets
Namespace Prefix:	hon_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amounts due to (from) Honeywell/spinoff entity from indemnification and reimbursement agreement.

+ References

No definition available.

+ Details

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

- Definition

Amounts received by Honeywell from the spinoff entity as defined in the indemnification and reimbursement agreement.

+ References

No definition available.

+ Details

Name:	hon_ReimbursementsFromIndemnificationAndReimbursementAgreement
Namespace Prefix:	hon_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	hon_OriginalDueDateOfReimbursementAxis=hon_OriginalDueDateApril302020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	hon_OriginalDueDateOfReimbursementAxis=hon_OriginalDueDateMay302020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	hon_OriginalDueDateOfReimbursementAxis=hon_OriginalDueDateApril12020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	hon_OriginalDueDateOfReimbursementAxis=hon_OriginalDueDateMay12020Member
Namespace Prefix:
Data Type:	na
Balance Type:
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COMMITMENTS AND CONTINGENCIES 8 (Details) € in Millions, $ in Millions	6 Months Ended	7 Months Ended	12 Months Ended
	Jun. 30, 2020 USD ($)	Jul. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2020 EUR (€)
Resideo [Member] \| Environmental Liabilities [Member]
Loss Contingencies [Line Items]
Indemnification and reimbursement agreement annual cap	$ 140
Indemnification and reimbursement agreement minimum amount	25
Reimbursements from indemnification and reimbursement agreement	35
Reimbursement receivable indemnification and reimbursement agreement	69
Indemnity and reimbursement receivable recorded In Other Current Assets	140
Indemnity and reimbursement receivable recorded In Other Assets	479
Resideo [Member] \| Environmental Liabilities [Member] \| Forecast [Member] \| Original Due Date April 30, 2020 [Member]
Loss Contingencies [Line Items]
Reimbursements from indemnification and reimbursement agreement		$ 35
Resideo [Member] \| Environmental Liabilities [Member] \| Forecast [Member] \| Original Due Date May 30, 2020 [Member]
Loss Contingencies [Line Items]
Indemnification And Reimbursement Agreement Royalty Income		$ 7
Garrett [Member] \| Bendix Asbestos Loss Contingency Liability [Member]
Loss Contingencies [Line Items]
Indemnification and reimbursement agreement annual cap	175			€ 150
Indemnification and reimbursement agreement minimum amount	25
Reimbursements from indemnification and reimbursement agreement	36
Reimbursement receivable indemnification and reimbursement agreement	26
Indemnity and reimbursement receivable recorded In Other Current Assets	2
Indemnity and reimbursement receivable recorded In Other Assets	$ 1,068
Garrett [Member] \| Bendix Asbestos Loss Contingency Liability [Member] \| Forecast [Member] \| Original Due Date April 1, 2020 [Member]
Loss Contingencies [Line Items]
Reimbursements from indemnification and reimbursement agreement			$ 18
Garrett [Member] \| Bendix Asbestos Loss Contingency Liability [Member] \| Forecast [Member] \| Original Due Date May 1, 2020 [Member]
Loss Contingencies [Line Items]
Reimbursements from indemnification and reimbursement agreement			$ 2