SEGMENT FINANCIAL DATA (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments	4
Net Sales	$ 8,463	$ 8,884
Total segment profit	1,848	1,809
Products [Member]
Segment Reporting Information [Line Items]
Net Sales	6,305	6,713
Services [Member]
Segment Reporting Information [Line Items]
Net Sales	2,158	2,171
Corporate
Segment Reporting Information [Line Items]
Total segment profit	(41)	(76)
Aerospace
Segment Reporting Information [Line Items]
Net Sales	3,361	3,341
Aerospace | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net Sales	3,361	3,341
Total segment profit	937	838
Aerospace | Operating Segments [Member] | Products [Member]
Segment Reporting Information [Line Items]
Net Sales	2,079	2,075
Aerospace | Operating Segments [Member] | Services [Member]
Segment Reporting Information [Line Items]
Net Sales	1,282	1,266
Performance Materials and Technologies
Segment Reporting Information [Line Items]
Net Sales	2,397	2,572
Performance Materials and Technologies | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net Sales	2,397	2,572
Total segment profit	512	564
Performance Materials and Technologies | Operating Segments [Member] | Products [Member]
Segment Reporting Information [Line Items]
Net Sales	1,914	2,070
Performance Materials and Technologies | Operating Segments [Member] | Services [Member]
Segment Reporting Information [Line Items]
Net Sales	483	502
Honeywell Building Technologies
Segment Reporting Information [Line Items]
Net Sales	1,281	1,389
Honeywell Building Technologies | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net Sales	1,281	1,389
Total segment profit	262	271
Honeywell Building Technologies | Operating Segments [Member] | Products [Member]
Segment Reporting Information [Line Items]
Net Sales	970	1,073
Honeywell Building Technologies | Operating Segments [Member] | Services [Member]
Segment Reporting Information [Line Items]
Net Sales	311	316
Safety and Productivity Solutions
Segment Reporting Information [Line Items]
Net Sales	1,424	1,582
Safety and Productivity Solutions | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net Sales	1,424	1,582
Total segment profit	178	212
Safety and Productivity Solutions | Operating Segments [Member] | Products [Member]
Segment Reporting Information [Line Items]
Net Sales	1,342	1,495
Safety and Productivity Solutions | Operating Segments [Member] | Services [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 82	$ 87