REVENUE RECOGNITION AND CONTRACTS WITH CUSTOMERS - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 8,951	$ 8,473	$ 26,280	$ 25,735
Net sales - percentage	100.00%	100.00%	100.00%	100.00%
Corporate and All Other
Disaggregation of Revenue [Line Items]
Net sales	$ 2	$ 0	$ 4	$ 0
Product
Disaggregation of Revenue [Line Items]
Net sales	$ 6,588	$ 6,233	$ 19,404	$ 19,281
Net sales - percentage	74.00%	74.00%	74.00%	75.00%
Product | Transferred point in time
Disaggregation of Revenue [Line Items]
Net sales - percentage	61.00%	58.00%	60.00%	58.00%
Product | Transferred over time
Disaggregation of Revenue [Line Items]
Net sales - percentage	13.00%	16.00%	14.00%	17.00%
Service
Disaggregation of Revenue [Line Items]
Net sales	$ 2,363	$ 2,240	$ 6,876	$ 6,454
Net sales - percentage	26.00%	26.00%	26.00%	25.00%
Service | Corporate and All Other
Disaggregation of Revenue [Line Items]
Net sales	$ 2	$ 0	$ 4	$ 0
Service | Transferred point in time
Disaggregation of Revenue [Line Items]
Net sales - percentage	7.00%	9.00%	8.00%	8.00%
Service | Transferred over time
Disaggregation of Revenue [Line Items]
Net sales - percentage	19.00%	17.00%	18.00%	17.00%
Aerospace | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 2,976	$ 2,732	$ 8,623	$ 8,130
Aerospace | Commercial Aviation Original Equipment | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	538	415	1,543	1,282
Aerospace | Commercial Aviation Aftermarket | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,339	1,083	3,715	3,008
Aerospace | Defense and Space | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,099	1,234	3,365	3,840
Aerospace | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,586	1,461	4,621	4,547
Aerospace | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,390	1,271	4,002	3,583
Honeywell Building Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,526	1,370	4,486	4,135
Honeywell Building Technologies | Products | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	915	787	2,730	2,383
Honeywell Building Technologies | Building Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	611	583	1,756	1,752
Honeywell Building Technologies | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,169	1,014	3,430	3,065
Honeywell Building Technologies | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	357	356	1,056	1,070
Performance Materials and Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,720	2,510	7,867	7,408
Performance Materials and Technologies | UOP | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	633	600	1,677	1,698
Performance Materials and Technologies | Process Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,141	1,160	3,472	3,422
Performance Materials and Technologies | Advanced Materials | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	946	750	2,718	2,288
Performance Materials and Technologies | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,228	2,007	6,394	5,931
Performance Materials and Technologies | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	492	503	1,473	1,477
Safety and Productivity Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,727	1,861	5,300	6,062
Safety and Productivity Solutions | Sensing and Safety Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	736	748	2,237	2,520
Safety and Productivity Solutions | Productivity Solutions and Services | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	401	411	1,234	1,144
Safety and Productivity Solutions | Warehouse and Workflow Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	590	702	1,829	2,398
Safety and Productivity Solutions | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,605	1,751	4,959	5,738
Safety and Productivity Solutions | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 122	$ 110	$ 341	$ 324