UNAUDITED QUARTERLY FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ 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
Selected Quarterly Financial Information Abstract
Net Sales	$ 9,982	$ 9,611	$ 9,775	$ 9,213	$ 10,266	$ 10,108	$ 10,253	$ 9,679	$ 38,581	$ 40,306	$ 39,055
Gross Profit	3,065	2,957	2,961	2,851	2,700	2,980	2,957	2,712	11,834	11,349
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
Earnings per share - Basic	$ 1.55	$ 1.62	$ 1.52	$ 1.42	$ 1.22	$ 1.49	$ 1.4	$ 1.3	$ 6.11	$ 5.4	$ 4.99
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
Dividends paid per share	0.595	0.5175	0.5175	0.5175	0.5175	0.45	0.45	0.45	2.15	1.87	$ 1.68
Market Price [Abstract]
Market price per share high	101.65	104.29	104.17	101.76	101.98	97.34	95.81	95.44	104.29	101.98
Market price per share low	$ 92.93	$ 101.72	$ 102.87	$ 98.78	$ 85.11	$ 90.56	$ 90.36	$ 88.47	$ 92.93	$ 85.11