EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net income attributable to Honeywell	$ 1,081	$ 1,541	$ 2,662	$ 2,957
Weighted average shares outstanding	702,300,000	723,200,000	705,900,000	726,400,000
Earnings per share of common stock - basic (in dollars per share)	$ 1.54	$ 2.13	$ 3.77	$ 4.07
Assuming dilution
Net income attributable to Honeywell	$ 1,081	$ 1,541	$ 2,662	$ 2,957
Average shares
Weighted average shares outstanding	702,300,000	723,200,000	705,900,000	726,400,000
Dilutive securities issuable - stock plans	5,800,000	9,800,000	6,700,000	9,500,000
Total weighted average shares outstanding	708,100,000	733,000,000.0	712,600,000	735,900,000
Earnings per share of common stock - assuming dilution (in dollars per share)	$ 1.53	$ 2.10	$ 3.74	$ 4.02
Earnings Per Share Paragraph Details [Abstract]
Stock options excluded from diluted computations	7,800,000	3,000,000.0	6,100,000	3,000,000.0
Shares outstanding	701,800,000	719,500,000	701,800,000	719,500,000
Common Stock Shares Issued	957,600,000	957,600,000	957,600,000	957,600,000