REVENUE RECOGNITION AND CONTRACTS WITH CUSTOMERS - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 9,212	$ 8,951	$ 27,222	$ 26,280
Net sales - percentage	100.00%	100.00%	100.00%	100.00%
Corporate and All Other
Disaggregation of Revenue [Line Items]
Net sales	$ 2	$ 2	$ 5	$ 4
Product
Disaggregation of Revenue [Line Items]
Net sales	$ 6,294	$ 6,588	$ 19,045	$ 19,404
Net sales - percentage	68.00%	74.00%	70.00%	74.00%
Product | Transferred point in time
Disaggregation of Revenue [Line Items]
Net sales - percentage	57.00%	61.00%	58.00%	60.00%
Product | Transferred over time
Disaggregation of Revenue [Line Items]
Net sales - percentage	11.00%	13.00%	12.00%	14.00%
Service
Disaggregation of Revenue [Line Items]
Net sales	$ 2,918	$ 2,363	$ 8,177	$ 6,876
Net sales - percentage	32.00%	26.00%	30.00%	26.00%
Service | Corporate and All Other
Disaggregation of Revenue [Line Items]
Net sales	$ 2	$ 2	$ 5	$ 4
Service | Transferred point in time
Disaggregation of Revenue [Line Items]
Net sales - percentage	12.00%	7.00%	10.00%	8.00%
Service | Transferred over time
Disaggregation of Revenue [Line Items]
Net sales - percentage	20.00%	19.00%	20.00%	18.00%
Aerospace | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 3,499	$ 2,976	$ 9,951	$ 8,623
Aerospace | Commercial Aviation Original Equipment | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	563	538	1,711	1,543
Aerospace | Commercial Aviation Aftermarket | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,634	1,339	4,590	3,715
Aerospace | Defense and Space | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,302	1,099	3,650	3,365
Aerospace | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,824	1,586	5,294	4,621
Aerospace | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,675	1,390	4,657	4,002
Honeywell Building Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,530	1,526	4,527	4,486
Honeywell Building Technologies | Products | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	894	915	2,720	2,730
Honeywell Building Technologies | Building Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	636	611	1,807	1,756
Honeywell Building Technologies | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,172	1,169	3,463	3,430
Honeywell Building Technologies | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	358	357	1,064	1,056
Performance Materials and Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,867	2,720	8,477	7,867
Performance Materials and Technologies | UOP | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	668	633	1,856	1,677
Performance Materials and Technologies | Process Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,316	1,141	3,898	3,472
Performance Materials and Technologies | Advanced Materials | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	883	946	2,723	2,718
Performance Materials and Technologies | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,183	2,228	6,609	6,394
Performance Materials and Technologies | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	684	492	1,868	1,473
Safety and Productivity Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,314	1,727	4,262	5,300
Safety and Productivity Solutions | Sensing and Safety Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	675	709	2,071	2,165
Safety and Productivity Solutions | Productivity Solutions and Services | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	304	435	994	1,328
Safety and Productivity Solutions | Warehouse and Workflow Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	335	583	1,197	1,807
Safety and Productivity Solutions | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,115	1,605	3,679	4,959
Safety and Productivity Solutions | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 199	$ 122	$ 583	$ 341