CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 6,828	$ 1,588	$ 4,849
Other Comprehensive Income (Loss), Net Of Tax [Abstract]
Foreign exchange translation adjustment	(685)	(37)	(52)
Actuarial gains (losses)	(602)	753	(443)
Prior service (cost) credit	2	(59)	(18)
Prior service credit recognized during year	(74)	(70)	(78)
Actuarial losses recognized during year	35	83	236
Settlements and curtailments	2	19	(5)
Foreign exchange translation and other	31	(49)	73
Pensions and other postretirement benefit adjustments	(606)	677	(235)
Effective portion of cash flow hedges recognized in other comprehensive income	89	(101)	103
Less: Reclassification adjustment for (losses) gains included in net income	4	60	(5)
Changes in fair value of effective cash flow hedges	85	(161)	108
Other comprehensive income (loss), net of tax	(1,206)	479	(179)
Comprehensive income	5,622	2,067	4,670
Less: Comprehensive income attributable to the noncontrolling interest	53	51	29
Comprehensive income attributable to Honeywell	$ 5,569	$ 2,016	$ 4,641