EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Net income attributable to Honeywell	$ 1,194	$ 1,264	$ 1,194	$ 1,116	$ 956	$ 1,167	$ 1,099	$ 1,017	$ 4,768	$ 4,239	$ 3,924
Weighted average shares outstanding									779.8	784.4	786.4
Earnings per share of common stock - basic	$ 1.55	$ 1.62	$ 1.52	$ 1.42	$ 1.22	$ 1.49	$ 1.4	$ 1.3	$ 6.11	$ 5.4	$ 4.99
Assuming dilution
Net income attributable to Honeywell	$ 1,194	$ 1,264	$ 1,194	$ 1,116	$ 956	$ 1,167	$ 1,099	$ 1,017	$ 4,768	$ 4,239	$ 3,924
Average shares
Weighted average shares outstanding									779.8	784.4	786.4
Dilutive securities issuable - stock plans									9.5	10.8	10.9
Total weighted average diluted shares outstanding									789.3	795.2	797.3
Earnings per share of common stock - assuming dilution	$ 1.53	$ 1.6	$ 1.51	$ 1.41	$ 1.2	$ 1.47	$ 1.38	$ 1.28	$ 6.04	$ 5.33	$ 4.92
Earnings Per Share Paragraph Details [Abstract]
Stock options excluded from diluted computations									7.1	4.7	2.2