EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income attributable to Honeywell	$ 1,541	$ 1,267	$ 2,957	$ 2,706
Weighted average shares outstanding	723.2	745.5	726.4	748.0
Earnings per share of common stock - basic (in dollars per share)	$ 2.13	$ 1.70	$ 4.07	$ 3.62
Assuming dilution
Net income attributable to Honeywell	$ 1,541	$ 1,267	$ 2,957	$ 2,706
Average shares
Weighted average shares outstanding	723.2	745.5	726.4	748.0
Dilutive securities issuable - stock plans	9.8	9.5	9.5	10.0
Total weighted average shares outstanding	733.0	755.0	735.9	758.0
Earnings per share of common stock - assuming dilution (in dollars per share)	$ 2.10	$ 1.68	$ 4.02	$ 3.57
Earnings Per Share Paragraph Details [Abstract]
Stock options excluded from diluted computations	3.0	3.1	3.0	2.1
Shares outstanding	719.5	742.6	719.5	742.6
Common Stock Shares Issued	957.6	957.6	957.6	957.6

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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