EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net income attributable to Honeywell	$ 1,581	$ 1,416
Weighted average shares outstanding	709.6	729.7
Earnings per share of common stock - basic (in dollars per share)	$ 2.23	$ 1.94
Assuming dilution
Net income attributable to Honeywell	$ 1,581	$ 1,416
Average shares
Weighted average shares outstanding	709.6	729.7
Dilutive securities issuable - stock plans	7.4	9.1
Total weighted average shares outstanding	717.0	738.8
Earnings per share of common stock - assuming dilution (in dollars per share)	$ 2.21	$ 1.92
Earnings Per Share Paragraph Details [Abstract]
Stock options excluded from diluted computations	4.3	3.7
Shares outstanding	701.8	727.7
Common Stock Shares Issued	957.6	957.6