EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Net income attributable to Honeywell	$ 1,267	$ 1,392	$ 2,705	$ 2,718
Weighted average shares outstanding	745.5	764.2	748.0	763.6
Earnings per share of common stock - basic	$ 1.7	$ 1.82	$ 3.62	$ 3.56
Assuming dilution
Net income attributable to Honeywell	$ 1,267	$ 1,392	$ 2,705	$ 2,718
Average shares
Weighted average shares outstanding	745.5	764.2	748.0	763.6
Dilutive securities issuable - stock plans	9.5	9.8	10.0	10.4
Total weighted average shares outstanding	755.0	774.0	758.0	774.0
Earnings per share of common stock - assuming dilution	$ 1.68	$ 1.8	$ 3.57	$ 3.51
Earnings Per Share Paragraph Details [Abstract]
Stock options excluded from diluted computations	3.1	5.0	2.1	3.5
Shares outstanding	742.6	760.6	742.6	760.6
Common Stock Shares Issued	957.6	957.6	957.6	957.6