SEGMENT FINANCIAL DATA (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment	4
Net sales	$ 8,376	$ 8,454
Total segment profit	1,766	1,775
Interest and other financial charges	(85)	(90)
Repositioning and other charges	(387)	(141)
Income before taxes	1,505	1,861
Product
Segment Reporting Information [Line Items]
Net sales	6,132	6,409
Service
Segment Reporting Information [Line Items]
Net sales	2,244	2,045
Corporate and All Other
Segment Reporting Information [Line Items]
Net sales	1	0
Total segment profit	(86)	(29)
Repositioning and other charges	(66)	(46)
Corporate and All Other | Service
Segment Reporting Information [Line Items]
Net sales	1	0
Segment Reconciling Items
Segment Reporting Information [Line Items]
Interest and other financial charges	(85)	(90)
Stock compensation expense	(60)	(77)
Repositioning and other charges	(387)	(141)
Other	10	101
Income before taxes	1,505	1,861
Segment Reconciling Items | Pension Plan
Segment Reporting Information [Line Items]
Pension ongoing income	251	276
Segment Reconciling Items | Other Postretirement Benefits Plan
Segment Reporting Information [Line Items]
Pension ongoing income	10	17
Aerospace | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,749	2,632
Total segment profit	753	762
Repositioning and other charges	(21)	(48)
Aerospace | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,461	1,515
Aerospace | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	1,288	1,117
Honeywell Building Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,429	1,358
Total segment profit	336	305
Repositioning and other charges	(14)	(5)
Honeywell Building Technologies | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,082	1,009
Honeywell Building Technologies | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	347	349
Performance Materials and Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,453	2,346
Total segment profit	510	434
Repositioning and other charges	(159)	(5)
Performance Materials and Technologies | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,956	1,869
Performance Materials and Technologies | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	497	477
Safety and Productivity Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,744	2,118
Total segment profit	253	303
Repositioning and other charges	(127)	(37)
Safety and Productivity Solutions | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,633	2,016
Safety and Productivity Solutions | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	$ 111	$ 102