UNAUDITED QUARTERLY FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selected Quarterly Financial Information Abstract
Revenue	$ 9,729	$ 10,762	$ 10,919	$ 10,392	$ 10,843	$ 10,121	$ 10,078	$ 9,492	$ 41,802	$ 40,534	$ 39,302
Gross Profit	3,044	3,206	3,305	3,201	3,303	3,067	3,054	2,966	12,756	12,390
Net income (loss) attributable to Honeywell	$ 1,721	$ 2,338	$ 1,267	$ 1,439	$ (2,519)	$ 1,345	$ 1,391	$ 1,328	$ 6,765	$ 1,545	$ 4,812
Earnings (loss) per common share - Basic	$ 2.34	$ 3.15	$ 1.7	$ 1.92	$ (3.32)	$ 1.76	$ 1.82	$ 1.74	$ 9.1	$ 2.03	$ 6.3
Earnings (loss) per common share - assuming dilution	2.31	3.11	1.68	1.89	(3.32)	1.74	1.8	1.72	8.98	2	$ 6.21
Cash dividends per common share	$ 0.82	$ 0.745	$ 0.745	$ 0.745	$ 0.745	$ 0.665	$ 0.665	$ 0.665	$ 3.055	$ 2.74