CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net Sales	$ 32,637	$ 36,709	$ 41,802
Costs and Expenses [Abstract]
Cost of products and services sold	22,169	24,339	29,046
Selling, general and administrative expenses	4,772	5,519	6,051
Other (income) expense	(675)	(1,065)	(1,149)
Interest and other financial charges	359	357	367
Cost, operating and non-operating expenses	26,625	29,150	34,315
Income before taxes	6,012	7,559	7,487
Tax expense	1,147	1,329	659
Net income	4,865	6,230	6,828
Less: Net income attributable to the noncontrolling interest	86	87	63
Net income attributable to Honeywell	$ 4,779	$ 6,143	$ 6,765
Earnings per share of common stock - basic	$ 6.79	$ 8.52	$ 9.10
Earnings per share of common stock - assuming dilution	$ 6.72	$ 8.41	$ 8.98
Products [Member]
Income Statement [Abstract]
Net Sales	$ 24,737	$ 27,629	$ 32,848
Costs and Expenses [Abstract]
Cost of products and services sold	17,638	19,269	23,634
Services [Member]
Income Statement [Abstract]
Net Sales	7,900	9,080	8,954
Costs and Expenses [Abstract]
Cost of products and services sold	$ 4,531	$ 5,070	$ 5,412