EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Net income attributable to Honeywell	$ 1,348	$ 1,240	$ 4,066	$ 3,775
Weighted average shares outstanding	762.2	763.7	763.1	765.0
Earnings per share of common stock - basic	$ 1.77	$ 1.62	$ 5.33	$ 4.93
Assuming dilution
Net income attributable to Honeywell	$ 1,348	$ 1,240	$ 4,066	$ 3,775
Average shares
Weighted average shares outstanding	762.2	763.7	763.1	765.0
Dilutive securities issuable - stock plans	9.2	10.7	10.0	11.3
Total weighted average diluted shares outstanding	771.4	774.4	773.1	776.3
Earnings per share of common stock - assuming dilution	$ 1.75	$ 1.6	$ 5.26	$ 4.86
Earnings Per Share Paragraph Details [Abstract]
Stock options excluded from diluted computations	4.2	5.5	3.8	6.9