EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income attributable to Honeywell	$ 1,416	$ 1,439
Weighted average shares outstanding	729.7	750.6
Earnings per share of common stock - basic (in dollars per share)	$ 1.94	$ 1.92
Assuming dilution
Net income attributable to Honeywell	$ 1,416	$ 1,439
Average shares
Weighted average shares outstanding	729.7	750.6
Dilutive securities issuable - stock plans	9.1	10.4
Total weighted average shares outstanding	738.8	761.0
Earnings per share of common stock - assuming dilution (in dollars per share)	$ 1.92	$ 1.89
Earnings Per Share Paragraph Details [Abstract]
Stock options excluded from diluted computations	3.7	1.1
Shares outstanding	727.7	746.9
Common Stock Shares Issued	957.6	957.6