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v3.21.2

COMMITMENTS AND CONTINGENCIES 10 (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Other Matters [Line Items] |  |  |  |
Expense related to UOP Matters | $ 160,000,000 | $ 0 | $ 160,000,000 | $ 0
Petrobras [Member] |  |  |  |
Other Matters [Line Items] |  |  |  |
Expense related to UOP Matters |  |  | $ 160,000,000 |

X
- Definition Charge for accrual related to UOP Matters + References No definition available. + Details
Name: | hon_ExpenseRelatedToUOPMatters
Namespace Prefix: | hon_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Other Matters + References No definition available. + Details
Name: | hon_OtherMattersLineItems
Namespace Prefix: | hon_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_LitigationCaseAxis=hon_PetrobrasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |