REVENUE RECOGNITION AND CONTRACTS WITH CUSTOMERS - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 9,146	$ 8,953	$ 18,010	$ 17,329
Net sales - percentage	100.00%	100.00%	100.00%	100.00%
Corporate and All Other
Disaggregation of Revenue [Line Items]
Net sales	$ 1	$ 1	$ 3	$ 2
Product
Disaggregation of Revenue [Line Items]
Net sales	$ 6,441	$ 6,684	$ 12,751	$ 12,816
Net sales - percentage	70.00%	75.00%	71.00%	74.00%
Product | Transferred point in time
Disaggregation of Revenue [Line Items]
Net sales - percentage	58.00%	61.00%	58.00%	60.00%
Product | Transferred over time
Disaggregation of Revenue [Line Items]
Net sales - percentage	12.00%	14.00%	13.00%	14.00%
Service
Disaggregation of Revenue [Line Items]
Net sales	$ 2,705	$ 2,269	$ 5,259	$ 4,513
Net sales - percentage	30.00%	25.00%	29.00%	26.00%
Service | Corporate and All Other
Disaggregation of Revenue [Line Items]
Net sales	$ 1	$ 1	$ 3	$ 2
Service | Transferred point in time
Disaggregation of Revenue [Line Items]
Net sales - percentage	11.00%	7.00%	9.00%	8.00%
Service | Transferred over time
Disaggregation of Revenue [Line Items]
Net sales - percentage	19.00%	18.00%	20.00%	18.00%
Aerospace | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 3,341	$ 2,898	$ 6,452	$ 5,647
Aerospace | Commercial Aviation Original Equipment | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	607	527	1,148	1,005
Aerospace | Commercial Aviation Aftermarket | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,533	1,208	2,956	2,376
Aerospace | Defense and Space | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,201	1,163	2,348	2,266
Aerospace | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,799	1,574	3,471	3,035
Aerospace | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,542	1,324	2,981	2,612
Honeywell Building Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,510	1,531	2,997	2,960
Honeywell Building Technologies | Products | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	918	936	1,826	1,815
Honeywell Building Technologies | Building Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	592	595	1,171	1,145
Honeywell Building Technologies | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,159	1,179	2,291	2,261
Honeywell Building Technologies | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	351	352	706	699
Performance Materials and Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,861	2,694	5,610	5,147
Performance Materials and Technologies | UOP | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	623	565	1,188	1,045
Performance Materials and Technologies | Process Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,294	1,179	2,582	2,331
Performance Materials and Technologies | Advanced Materials | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	944	950	1,840	1,771
Performance Materials and Technologies | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,244	2,210	4,426	4,166
Performance Materials and Technologies | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	617	484	1,184	981
Safety and Productivity Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,433	1,829	2,948	3,573
Safety and Productivity Solutions | Sensing and Safety Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	723	748	1,427	1,501
Safety and Productivity Solutions | Productivity Solutions and Services | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	312	449	659	848
Safety and Productivity Solutions | Warehouse and Workflow Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	398	632	862	1,224
Safety and Productivity Solutions | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,239	1,721	2,563	3,354
Safety and Productivity Solutions | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 194	$ 108	$ 385	$ 219