REVENUE RECOGNITION AND CONTRACTS WITH CUSTOMERS - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 8,953	$ 8,808	$ 17,329	$ 17,262
Net sales - percentage	100.00%	100.00%	100.00%	100.00%
Corporate and All Other
Disaggregation of Revenue [Line Items]
Net sales	$ 1	$ 0	$ 2	$ 0
Product
Disaggregation of Revenue [Line Items]
Net sales	$ 6,684	$ 6,639	$ 12,816	$ 13,048
Net sales - percentage	75.00%	75.00%	74.00%	76.00%
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	14.00%	17.00%	14.00%	18.00%
Service
Disaggregation of Revenue [Line Items]
Net sales	$ 2,269	$ 2,169	$ 4,513	$ 4,214
Net sales - percentage	25.00%	25.00%	26.00%	24.00%
Service | Corporate and All Other
Disaggregation of Revenue [Line Items]
Net sales	$ 1	$ 0	$ 2	$ 0
Service | Transferred point in time
Disaggregation of Revenue [Line Items]
Net sales - percentage	7.00%	7.00%	8.00%	7.00%
Service | Transferred over time
Disaggregation of Revenue [Line Items]
Net sales - percentage	18.00%	18.00%	18.00%	17.00%
Aerospace
Disaggregation of Revenue [Line Items]
Net sales	$ 2,898	$ 2,766
Aerospace | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,898	2,766	$ 5,647	$ 5,398
Aerospace | Commercial Aviation Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	527	436
Aerospace | Commercial Aviation Original Equipment | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			1,005	867
Aerospace | Commercial Aviation Aftermarket
Disaggregation of Revenue [Line Items]
Net sales	1,208	1,015
Aerospace | Commercial Aviation Aftermarket | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			2,376	1,925
Aerospace | Defense and Space
Disaggregation of Revenue [Line Items]
Net sales	1,163	1,315
Aerospace | Defense and Space | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			2,266	2,606
Aerospace | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,574	1,571	3,035	3,086
Aerospace | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,324	1,195	2,612	2,312
Honeywell Building Technologies
Disaggregation of Revenue [Line Items]
Net sales	1,531	1,407
Honeywell Building Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,531	1,407	2,960	2,765
Honeywell Building Technologies | Products
Disaggregation of Revenue [Line Items]
Net sales	936	812
Honeywell Building Technologies | Products | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			1,815	1,596
Honeywell Building Technologies | Building Solutions
Disaggregation of Revenue [Line Items]
Net sales	595	595
Honeywell Building Technologies | Building Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			1,145	1,169
Honeywell Building Technologies | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,179	1,042	2,261	2,051
Honeywell Building Technologies | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	352	365	699	714
Performance Materials and Technologies
Disaggregation of Revenue [Line Items]
Net sales	2,694	2,552
Performance Materials and Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,694	2,552	5,147	4,898
Performance Materials and Technologies | UOP
Disaggregation of Revenue [Line Items]
Net sales	565	571
Performance Materials and Technologies | UOP | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			1,045	1,098
Performance Materials and Technologies | Process Solutions
Disaggregation of Revenue [Line Items]
Net sales	1,179	1,166
Performance Materials and Technologies | Process Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			2,331	2,262
Performance Materials and Technologies | Advanced Materials
Disaggregation of Revenue [Line Items]
Net sales			1,771	1,538
Performance Materials and Technologies | Advanced Materials | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	950	815
Performance Materials and Technologies | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,210	2,055	4,166	3,924
Performance Materials and Technologies | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	484	497	981	974
Safety and Productivity Solutions
Disaggregation of Revenue [Line Items]
Net sales	1,829	2,083
Safety and Productivity Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,829	2,083	3,573	4,201
Safety and Productivity Solutions | Safety and Retail
Disaggregation of Revenue [Line Items]
Net sales	488	616
Safety and Productivity Solutions | Safety and Retail | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			999	1,359
Safety and Productivity Solutions | Productivity Solutions and Services
Disaggregation of Revenue [Line Items]
Net sales	442	386
Safety and Productivity Solutions | Productivity Solutions and Services | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			833	732
Safety and Productivity Solutions | Warehouse and Workflow Solutions
Disaggregation of Revenue [Line Items]
Net sales	640	867
Safety and Productivity Solutions | Warehouse and Workflow Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			1,239	1,698
Safety and Productivity Solutions | Advanced Sensing Technologies
Disaggregation of Revenue [Line Items]
Net sales	259	214
Safety and Productivity Solutions | Advanced Sensing Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales			502	412
Safety and Productivity Solutions | Product | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,721	1,971	3,354	3,987
Safety and Productivity Solutions | Service | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 108	$ 112	$ 219	$ 214