Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2018	Jan. 25, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document type	10-K
Document period end date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment flag	false
Entity registrant name	Honeywell International Inc.
Entity central index key	0000773840
Entity current reporting status	Yes
Entity voluntary filers	No
Current fiscal year end date	--12-31
Entity filer category	Large Accelerated Filer
Entity well known seasoned issuer	Yes
Entity common stock shares outstanding		729,085,890
Entity public float			$ 107.6
Entity tax identification number	222640650