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REPOSITIONING AND OTHER CHARGES 3 (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Pretax Impact Of Total Net Repositioning And Other Charges By Segment [Line Items]
Total net repositioning charges	$ 575	$ 546	$ 1,091
Corporate [Member]
Pretax Impact Of Total Net Repositioning And Other Charges By Segment [Line Items]
Total net repositioning charges	110	241	502
Aerospace [Member]
Pretax Impact Of Total Net Repositioning And Other Charges By Segment [Line Items]
Total net repositioning charges	157	33	154
Honeywell Building Technologies [Member]
Pretax Impact Of Total Net Repositioning And Other Charges By Segment [Line Items]
Total net repositioning charges	100	108	111
Performance Materials And Technologies [Member]
Pretax Impact Of Total Net Repositioning And Other Charges By Segment [Line Items]
Total net repositioning charges	167	93	191
Safety And Productivity Solutions [Member]
Pretax Impact Of Total Net Repositioning And Other Charges By Segment [Line Items]
Total net repositioning charges	$ 41	$ 71	$ 133

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Listing of pretax impact of net repositioning and other chargers details by segment

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Net total Increase or Decrease in the accrual for restructuring and other costs, including asbestos litigation charges - net of insurance and environmental remediation activities, during the reporting period.

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