Related Party Transactions and Exempt Party-In-Interest Transactions (Details) - Honeywell 401(k) Plan [Member] - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Related Party Transactions and Exempt Party-In-Interest Transactions [Abstract]
Realized gains	$ 239
Dividend income on investments	78
Investment interest	16,547	$ 16,077
Common Stock [Member]
Related Party Transactions and Exempt Party-In-Interest Transactions [Abstract]
Purchases made by the Plan for the investment in the Company’s common stock	187
Sales made by the Plan for the investment in the Company’s common stock	516
Realized gains	241
Unrealized gain on investments	579
Dividend income on investments	79
Investment interest	$ 3,400

Amount of increase (decrease) in net asset available for benefit from realized gain (loss) on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 10
-Paragraph b
-Subparagraph (3)
-Publisher DOL-EBSA

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
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-Subsection 6
-Paragraph d
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-Publisher DOL-EBSA

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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-Subsection 6
-Paragraph d
-Subparagraph (2)(v)
-Publisher DOL-EBSA

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
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-Subparagraph (a)
-Publisher FASB
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Amount of increase (decrease) in net asset available for benefit from unrealized gain (loss) on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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Amount of increase in net asset available for benefit from dividend income on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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Cost of investment, excluding plan interest in master trust, held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract.

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Fair value of plan interest in master trust held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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Amount of selling price for investment, excluding plan interest in master trust, sold by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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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.

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