REVENUE RECOGNITION AND CONTRACTS WITH CUSTOMERS - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 8,376	$ 8,454
Net sales - percentage	100.00%	100.00%
Corporate and All Other
Disaggregation of Revenue [Line Items]
Net sales	$ 1	$ 0
Product
Disaggregation of Revenue [Line Items]
Net sales	$ 6,132	$ 6,409
Net sales - percentage	73.00%	76.00%
Product | Transferred point in time
Disaggregation of Revenue [Line Items]
Net sales - percentage	59.00%	58.00%
Product | Transferred over time
Disaggregation of Revenue [Line Items]
Net sales - percentage	14.00%	18.00%
Service
Disaggregation of Revenue [Line Items]
Net sales	$ 2,244	$ 2,045
Net sales - percentage	27.00%	24.00%
Service | Corporate and All Other
Disaggregation of Revenue [Line Items]
Net sales	$ 1	$ 0
Service | Transferred point in time
Disaggregation of Revenue [Line Items]
Net sales - percentage	8.00%	7.00%
Service | Transferred over time
Disaggregation of Revenue [Line Items]
Net sales - percentage	19.00%	17.00%
Aerospace | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 2,749	$ 2,632
Aerospace | Commercial Aviation Original Equipment | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	478	431
Aerospace | Commercial Aviation Aftermarket | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,168	910
Aerospace | Defense and Space | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,103	1,291
Aerospace | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,461	1,515
Aerospace | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,288	1,117
Honeywell Building Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,429	1,358
Honeywell Building Technologies | Products | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	879	784
Honeywell Building Technologies | Building Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	550	574
Honeywell Building Technologies | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,082	1,009
Honeywell Building Technologies | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	347	349
Performance Materials and Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,453	2,346
Performance Materials and Technologies | UOP | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	480	527
Performance Materials and Technologies | Process Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,152	1,096
Performance Materials and Technologies | Advanced Materials | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	821	723
Performance Materials and Technologies | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,956	1,869
Performance Materials and Technologies | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	497	477
Safety and Productivity Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,744	2,118
Safety and Productivity Solutions | Safety and Retail | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	511	743
Safety and Productivity Solutions | Productivity Solutions and Services | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	391	346
Safety and Productivity Solutions | Warehouse and Workflow Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	599	831
Safety and Productivity Solutions | Advanced Sensing Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	243	198
Safety and Productivity Solutions | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,633	2,016
Safety and Productivity Solutions | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 111	$ 102