SEGMENT FINANCIAL DATA (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) Segments	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Revenue	$ 34,392,000,000	$ 32,637,000,000	$ 36,709,000,000
Depreciation and amortization	1,138,000,000	1,003,000,000	1,088,000,000
Segment Reporting Segment Profit Loss	7,212,000,000	6,665,000,000	7,739,000,000
Capital expenditures	895,000,000	906,000,000	839,000,000
Total Assets	$ 64,470,000,000	64,586,000,000	58,679,000,000
Number of Operating Segments | Segments	4
Products [Member]
Segment Reporting Information [Line Items]
Revenue	$ 25,643,000,000	24,737,000,000	27,629,000,000
Services [Member]
Segment Reporting Information [Line Items]
Revenue	8,749,000,000	7,900,000,000	9,080,000,000
Aerospace [Member]
Segment Reporting Information [Line Items]
Revenue	11,026,000,000	11,544,000,000	14,054,000,000
Aerospace [Member] | Products [Member]
Segment Reporting Information [Line Items]
Revenue	6,158,000,000	7,194,000,000	8,766,000,000
Aerospace [Member] | Services [Member]
Segment Reporting Information [Line Items]
Revenue	4,868,000,000	4,350,000,000	5,288,000,000
Honeywell Building Technologies [Member]
Segment Reporting Information [Line Items]
Revenue	5,539,000,000	5,189,000,000	5,717,000,000
Honeywell Building Technologies [Member] | Products [Member]
Segment Reporting Information [Line Items]
Revenue	4,098,000,000	3,868,000,000	4,395,000,000
Honeywell Building Technologies [Member] | Services [Member]
Segment Reporting Information [Line Items]
Revenue	1,441,000,000	1,321,000,000	1,322,000,000
Performance Materials And Technologies [Member]
Segment Reporting Information [Line Items]
Revenue	10,013,000,000	9,423,000,000	10,834,000,000
Performance Materials And Technologies [Member] | Products [Member]
Segment Reporting Information [Line Items]
Revenue	8,008,000,000	7,548,000,000	8,732,000,000
Performance Materials And Technologies [Member] | Services [Member]
Segment Reporting Information [Line Items]
Revenue	2,005,000,000	1,875,000,000	2,102,000,000
Safety And Productivity Solutions [Member]
Segment Reporting Information [Line Items]
Revenue	7,814,000,000	6,481,000,000	6,104,000,000
Safety And Productivity Solutions [Member] | Products [Member]
Segment Reporting Information [Line Items]
Revenue	7,379,000,000	6,127,000,000	5,736,000,000
Safety And Productivity Solutions [Member] | Services [Member]
Segment Reporting Information [Line Items]
Revenue	435,000,000	354,000,000	368,000,000
Corporate and All Other [Member]
Segment Reporting Information [Line Items]
Revenue	0	0	0
Depreciation and amortization	102,000,000	44,000,000	76,000,000
Segment Reporting Segment Profit Loss	(226,000,000)	(96,000,000)	(256,000,000)
Capital expenditures	94,000,000	52,000,000	128,000,000
Total Assets	17,174,000,000	19,788,000,000	14,557,000,000
Corporate and All Other [Member] | Services [Member]
Segment Reporting Information [Line Items]
Revenue	0	0	0
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	34,392,000,000	32,637,000,000	36,709,000,000
Operating Segments [Member] | Aerospace [Member]
Segment Reporting Information [Line Items]
Revenue	11,026,000,000	11,544,000,000	14,054,000,000
Depreciation and amortization	278,000,000	241,000,000	234,000,000
Segment Reporting Segment Profit Loss	3,051,000,000	2,904,000,000	3,607,000,000
Capital expenditures	284,000,000	248,000,000	272,000,000
Total Assets	11,490,000,000	11,035,000,000	11,378,000,000
Operating Segments [Member] | Honeywell Building Technologies [Member]
Segment Reporting Information [Line Items]
Revenue	5,539,000,000	5,189,000,000	5,717,000,000
Depreciation and amortization	67,000,000	55,000,000	63,000,000
Segment Reporting Segment Profit Loss	1,238,000,000	1,099,000,000	1,165,000,000
Capital expenditures	62,000,000	66,000,000	43,000,000
Total Assets	6,543,000,000	6,351,000,000	5,968,000,000
Operating Segments [Member] | Performance Materials And Technologies [Member]
Segment Reporting Information [Line Items]
Revenue	10,013,000,000	9,423,000,000	10,834,000,000
Depreciation and amortization	454,000,000	440,000,000	493,000,000
Segment Reporting Segment Profit Loss	2,120,000,000	1,851,000,000	2,433,000,000
Capital expenditures	265,000,000	252,000,000	314,000,000
Total Assets	18,021,000,000	16,772,000,000	16,888,000,000
Operating Segments [Member] | Safety And Productivity Solutions [Member]
Segment Reporting Information [Line Items]
Revenue	7,814,000,000	6,481,000,000	6,104,000,000
Depreciation and amortization	237,000,000	223,000,000	222,000,000
Segment Reporting Segment Profit Loss	1,029,000,000	907,000,000	790,000,000
Capital expenditures	190,000,000	288,000,000	82,000,000
Total Assets	$ 11,242,000,000	$ 10,640,000,000	$ 9,888,000,000