SEGMENT FINANCIAL DATA (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) segment	Jun. 30, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment			4
Net sales	$ 9,146	$ 8,953	$ 18,010	$ 17,329
Total segment profit	2,052	1,867	3,999	3,633
Interest and other financial charges	(187)	(87)	(357)	(172)
Repositioning and other charges	(102)	(227)	(243)	(614)
Income before taxes	1,904	1,704	3,686	3,209
Product
Segment Reporting Information [Line Items]
Net sales	6,441	6,684	12,751	12,816
Service
Segment Reporting Information [Line Items]
Net sales	2,705	2,269	5,259	4,513
Corporate and All Other
Segment Reporting Information [Line Items]
Net sales	1	1	3	2
Total segment profit	(118)	(92)	(199)	(178)
Repositioning and other charges	(55)	(86)
Corporate and All Other | Service
Segment Reporting Information [Line Items]
Net sales	1	1	3	2
Segment Reconciling Items
Segment Reporting Information [Line Items]
Interest and other financial charges	(187)	(87)	(357)	(172)
Stock compensation expense	(50)	(53)	(109)	(113)
Repositioning and other charges	(102)	(227)	(243)	(614)
Other	54	(56)	123	(46)
Income before taxes	1,904	1,704	3,686	3,209
Segment Reconciling Items | Pension Plan
Segment Reporting Information [Line Items]
Pension ongoing income	130	250	260	501
Segment Reconciling Items | Other Postretirement Benefits Plan
Segment Reporting Information [Line Items]
Pension ongoing income	7	10	13	20
Aerospace
Segment Reporting Information [Line Items]
Repositioning and other charges			(11)	(36)
Aerospace | Operating Segments
Segment Reporting Information [Line Items]
Net sales	3,341	2,898	6,452	5,647
Total segment profit	924	767	1,751	1,520
Repositioning and other charges	(8)	(15)
Aerospace | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,799	1,574	3,471	3,035
Aerospace | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	1,542	1,324	2,981	2,612
Honeywell Building Technologies
Segment Reporting Information [Line Items]
Repositioning and other charges			(31)	(37)
Honeywell Building Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,510	1,531	2,997	2,960
Total segment profit	385	360	760	696
Repositioning and other charges	(4)	(23)
Honeywell Building Technologies | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,159	1,179	2,291	2,261
Honeywell Building Technologies | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	351	352	706	699
Performance Materials and Technologies
Segment Reporting Information [Line Items]
Repositioning and other charges			(23)	(247)
Performance Materials and Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,861	2,694	5,610	5,147
Total segment profit	622	601	1,188	1,111
Repositioning and other charges	(4)	(88)
Performance Materials and Technologies | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	2,244	2,210	4,426	4,166
Performance Materials and Technologies | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	617	484	1,184	981
Safety and Productivity Solutions
Segment Reporting Information [Line Items]
Repositioning and other charges			(71)	(142)
Safety and Productivity Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,433	1,829	2,948	3,573
Total segment profit	239	231	499	484
Repositioning and other charges	(31)	(15)
Safety and Productivity Solutions | Operating Segments | Product
Segment Reporting Information [Line Items]
Net sales	1,239	1,721	2,563	3,354
Safety and Productivity Solutions | Operating Segments | Service
Segment Reporting Information [Line Items]
Net sales	$ 194	$ 108	$ 385	$ 219