SEGMENT FINANCIAL DATA (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) segment	Sep. 30, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment			4
Net sales	$ 8,951	$ 8,473	$ 26,280	$ 25,735
Total segment profit	1,952	1,793	5,585	5,361
Interest and other financial charges	(98)	(90)	(270)	(263)
Repositioning and other charges	(100)	(96)	(714)	(338)
Income before taxes	1,981	1,700	5,190	5,442
Product
Segment Reporting Information [Line Items]
Net sales	6,588	6,233	19,404	19,281
Service
Segment Reporting Information [Line Items]
Net sales	2,363	2,240	6,876	6,454
Corporate and All Other
Segment Reporting Information [Line Items]
Net sales	2	0	4	0
Total segment profit	(120)	(72)	(298)	(155)
Repositioning and other charges	(22)	(48)	(174)	(126)
Corporate and All Other | Service
Segment Reporting Information [Line Items]
Net sales	2	0	4	0
Segment Reconciling Items
Segment Reporting Information [Line Items]
Interest and other financial charges	(98)	(90)	(270)	(263)
Stock compensation expense	(50)	(56)	(163)	(172)
Repositioning and other charges	(100)	(96)	(714)	(338)
Other	20	(130)	(26)	(8)
Income before taxes	1,981	1,700	5,190	5,442
Segment Reconciling Items | Pension Plan
Segment Reporting Information [Line Items]
Pension ongoing income	247	261	748	809
Segment Reconciling Items | Other Postretirement Benefits Plan
Segment Reporting Information [Line Items]
Pension ongoing income	10	18	30	53
Aerospace | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,976	2,732	8,623	8,130
Total segment profit	818	740	2,338	2,212
Repositioning and other charges	2	2	(34)	(55)
Aerospace | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,586	1,461	4,621	4,547
Aerospace | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	1,390	1,271	4,002	3,583
Honeywell Building Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,526	1,370	4,486	4,135
Total segment profit	368	322	1,064	942
Repositioning and other charges	(10)	(5)	(47)	(9)
Honeywell Building Technologies | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,169	1,014	3,430	3,065
Honeywell Building Technologies | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	357	356	1,056	1,070
Performance Materials and Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,720	2,510	7,867	7,408
Total segment profit	615	558	1,726	1,522
Repositioning and other charges	(15)	(5)	(262)	(12)
Performance Materials and Technologies | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	2,228	2,007	6,394	5,931
Performance Materials and Technologies | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	492	503	1,473	1,477
Safety and Productivity Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,727	1,861	5,300	6,062
Total segment profit	271	245	755	840
Repositioning and other charges	(55)	(40)	(197)	(136)
Safety and Productivity Solutions | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,605	1,751	4,959	5,738
Safety and Productivity Solutions | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	$ 122	$ 110	$ 341	$ 324