SEGMENT FINANCIAL DATA (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment			4
Net sales	$ 8,953	$ 8,808	$ 17,329	$ 17,262
Total segment profit	1,867	1,793	3,633	3,568
Interest and other financial charges	(87)	(83)	(172)	(173)
Repositioning and other charges	(227)	(101)	(614)	(242)
Income before taxes	1,704	1,881	3,209	3,742
Product
Segment Reporting Information [Line Items]
Net sales	6,684	6,639	12,816	13,048
Service
Segment Reporting Information [Line Items]
Net sales	2,269	2,169	4,513	4,214
Corporate and All Other
Segment Reporting Information [Line Items]
Net sales	1	0	2	0
Total segment profit	(92)	(54)	(178)	(83)
Repositioning and other charges	(86)	(32)	(152)	(78)
Corporate and All Other | Service
Segment Reporting Information [Line Items]
Net sales	1	0	2	0
Segment Reconciling Items
Segment Reporting Information [Line Items]
Interest and other financial charges	(87)	(83)	(172)	(173)
Stock compensation expense	(53)	(39)	(113)	(116)
Repositioning and other charges	(227)	(101)	(614)	(242)
Other	(56)	21	(46)	122
Income before taxes	1,704	1,881	3,209	3,742
Segment Reconciling Items | Pension Plan
Segment Reporting Information [Line Items]
Pension ongoing income	250	272	501	548
Segment Reconciling Items | Other Postretirement Benefits Plan
Segment Reporting Information [Line Items]
Pension ongoing income	10	18	20	35
Aerospace
Segment Reporting Information [Line Items]
Net sales	2,898	2,766
Aerospace | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,898	2,766	5,647	5,398
Total segment profit	767	710	1,520	1,472
Repositioning and other charges	(15)	(9)	(36)	(57)
Aerospace | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,574	1,571	3,035	3,086
Aerospace | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	1,324	1,195	2,612	2,312
Honeywell Building Technologies
Segment Reporting Information [Line Items]
Net sales	1,531	1,407
Honeywell Building Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,531	1,407	2,960	2,765
Total segment profit	360	315	696	620
Repositioning and other charges	(23)	1	(37)	(4)
Honeywell Building Technologies | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,179	1,042	2,261	2,051
Honeywell Building Technologies | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	352	365	699	714
Performance Materials and Technologies
Segment Reporting Information [Line Items]
Net sales	2,694	2,552
Performance Materials and Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,694	2,552	5,147	4,898
Total segment profit	601	530	1,111	964
Repositioning and other charges	(88)	(2)	(247)	(7)
Performance Materials and Technologies | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	2,210	2,055	4,166	3,924
Performance Materials and Technologies | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	484	497	981	974
Safety and Productivity Solutions
Segment Reporting Information [Line Items]
Net sales	1,829	2,083
Safety and Productivity Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,829	2,083	3,573	4,201
Total segment profit	231	292	484	595
Repositioning and other charges	(15)	(59)	(142)	(96)
Safety and Productivity Solutions | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,721	1,971	3,354	3,987
Safety and Productivity Solutions | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	$ 108	$ 112	$ 219	$ 214