PENSION AND OTHER POSTRETIREMENT BENEFITS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Amounts recognized in Consolidated Balance Sheet [Abstract]
Postretirement benefit obligations other than pensions		$ (526,000,000)	$ (911,000,000)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss [Abstract]
Total recognized in other comprehensive (income) loss		$ (129,000,000)	1,707,000,000	$ (3,514,000,000)
Other Postretirement Benefits for Significant Plans [Member]
Pension Benefits Paragraph Details [Abstract]
Explanation of significant changes in benefit obligations		Less than 1% of Honeywell’s U.S. employees are eligible for a retiree medical subsidy from the Company; and this subsidy is limited to a fixed-dollar amount. In addition, more than 80% of Honeywell’s current retirees either have no Company subsidy or have a fixed-dollar subsidy amount. This significantly limits our exposure to the impact of future health care cost increases.
Change in Benefit Obligation [Roll forward]
Benefit obligation at beginning of year	$ 569,000,000	$ 973,000,000	1,096,000,000
Service cost		0	0	0
Interest cost		33,000,000	42,000,000	44,000,000
Plan amendments		(290,000,000)	(87,000,000)
Actuarial (gains) losses		(55,000,000)	46,000,000
Benefits paid - OPEB		(92,000,000)	(124,000,000)
Benefit obligation at end of year		569,000,000	973,000,000	1,096,000,000
Change In Plan Assets [Roll forward]
Fair value of plan assets at beginning of year	0	0	0
Actual return on plan assets		0	0
Company contributions		0	0
Benefits paid - OPEB		0	0
Fair value of plan assets at end of year		0	0	0
Funded status of plans		(569,000,000)	(973,000,000)
Amounts recognized in Consolidated Balance Sheet [Abstract]
Accrued Liabilities		(85,000,000)	(111,000,000)
Postretirement benefit obligations other than pensions		(484,000,000)	(862,000,000)
Foreign plans excluded from postretirement benefits other than pensions		42,000,000	49,000,000
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income [Abstract]
Prior service cost (credit)		(496,000,000)	(235,000,000)
Net actuarial loss		189,000,000	278,000,000
Net amount recognized		(307,000,000)	43,000,000
Defined Benefit Plan Disclosure [Abstract]
Service cost		0	0	0
Interest cost		33,000,000	42,000,000	44,000,000
Amortization of prior service cost (credit)		(30,000,000)	(20,000,000)	(13,000,000)
Recognition of actuarial losses		34,000,000	24,000,000	27,000,000
Settlements and curtailments		0	0	(42,000,000)
Net periodic benefit (income) cost		37,000,000	46,000,000	16,000,000
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss [Abstract]
Actuarial (gains) losses		(55,000,000)	46,000,000	(108,000,000)
Prior service cost (credit)		(290,000,000)	(87,000,000)	(175,000,000)
Prior service (cost) credit recognized during year		30,000,000	20,000,000	13,000,000
Actuarial losses recognized during year		(34,000,000)	(24,000,000)	(27,000,000)
Settlements and curtailments		0	0	42,000,000
Total recognized in other comprehensive (income) loss		(349,000,000)	(45,000,000)	(255,000,000)
Total recognized in net periodic benefit (income) cost and other comprehensive (income) loss		$ (312,000,000)	1,000,000	(239,000,000)
Other Postretirement Benefits for Significant Plans [Member] | Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Abstract]
Amortization of prior service cost (credit)	(76,000,000)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss [Abstract]
Net loss to be amortized	22,000,000
United States, Defined Benefit [Member]
Pension Benefits Paragraph Details [Abstract]
Explanation of significant changes in benefit obligations		All non-union hourly and salaried employees joining Honeywell for the first time after December 31, 2012, are not eligible to participate in Honeywell’s U.S. defined benefit pension plans.
Change in Benefit Obligation [Roll forward]
Benefit obligation at beginning of year	17,298,000,000	$ 18,035,000,000	16,290,000,000
Service cost		223,000,000	241,000,000	272,000,000
Interest cost		696,000,000	771,000,000	677,000,000
Plan amendments		(429,000,000)	0
Actuarial (gains) losses		(269,000,000)	1,718,000,000
Acquisitions		61,000,000	0
Divestitures		0	0
Benefits paid		(1,027,000,000)	(996,000,000)
Settlements and curtailments		0	0
Foreign currency and other		8,000,000	11,000,000
Benefit obligation at end of year		17,298,000,000	18,035,000,000	16,290,000,000
Change In Plan Assets [Roll forward]
Fair value of plan assets at beginning of year	16,349,000,000	17,066,000,000	16,727,000,000
Actual return on plan assets		233,000,000	1,290,000,000
Company contributions		34,000,000	36,000,000
Acquisitions		43,000,000	0
Benefits paid		(1,027,000,000)	(996,000,000)
Foreign currency and other		0	9,000,000
Fair value of plan assets at end of year		16,349,000,000	17,066,000,000	16,727,000,000
Funded status of plans		(949,000,000)	(969,000,000)
Amounts recognized in Consolidated Balance Sheet [Abstract]
Other Assets		0	0
Accrued Liabilities		(51,000,000)	(74,000,000)
Other Liabilities - Noncurrent		(898,000,000)	(895,000,000)
Net amount recognized		(949,000,000)	(969,000,000)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income [Abstract]
Transition obligation		0	0
Prior service cost (credit)		(355,000,000)	88,000,000
Net actuarial loss		1,005,000,000	281,000,000
Net amount recognized		650,000,000	369,000,000
Defined Benefit Plan Disclosure [Abstract]
Service cost		223,000,000	241,000,000	272,000,000
Interest cost		696,000,000	771,000,000	677,000,000
Expected return on plan assets		(1,278,000,000)	(1,257,000,000)	(1,076,000,000)
Amortization of transition obligations		0	0	0
Amortization of prior service cost (credit)		13,000,000	23,000,000	23,000,000
Recognition of actuarial losses		52,000,000	26,000,000	0
Settlements and curtailments		8,000,000	0	0
Net periodic benefit (income) cost		(286,000,000)	(196,000,000)	(104,000,000)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss [Abstract]
Actuarial (gains) losses		775,000,000	1,686,000,000	(3,090,000,000)
Prior service cost (credit)		(429,000,000)	0	14,000,000
Transition obligation recognized during year		0	0	0
Prior service (cost) credit recognized during year		(13,000,000)	(23,000,000)	(23,000,000)
Actuarial losses recognized during year		(52,000,000)	(26,000,000)	0
Foreign exchange translation adjustments		0	0	0
Total recognized in other comprehensive (income) loss		281,000,000	1,637,000,000	(3,099,000,000)
Total recognized in net periodic benefit (income) cost and other comprehensive (income) loss		(5,000,000)	1,441,000,000	(3,203,000,000)
United States, Defined Benefit [Member] | Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Abstract]
Amortization of prior service cost (credit)	(44,000,000)
Non-U.S. Pension Plans, Defined Benefit [Member]
Change in Benefit Obligation [Roll forward]
Benefit obligation at beginning of year	6,338,000,000	5,761,000,000	5,523,000,000
Service cost		51,000,000	56,000,000	58,000,000
Interest cost		177,000,000	231,000,000	215,000,000
Plan amendments		0	(17,000,000)
Actuarial (gains) losses		(178,000,000)	601,000,000
Acquisitions		1,137,000,000	0
Divestitures		0	(61,000,000)
Benefits paid		(199,000,000)	(210,000,000)
Settlements and curtailments		(11,000,000)	0
Foreign currency and other		(400,000,000)	(362,000,000)
Benefit obligation at end of year		6,338,000,000	5,761,000,000	5,523,000,000
Change In Plan Assets [Roll forward]
Fair value of plan assets at beginning of year	6,117,000,000	5,333,000,000	5,037,000,000
Actual return on plan assets		154,000,000	622,000,000
Company contributions		147,000,000	187,000,000
Acquisitions		1,036,000,000	0
Benefits paid		(199,000,000)	(210,000,000)
Foreign currency and other		(354,000,000)	(303,000,000)
Fair value of plan assets at end of year		6,117,000,000	5,333,000,000	5,037,000,000
Funded status of plans		(221,000,000)	(428,000,000)
Amounts recognized in Consolidated Balance Sheet [Abstract]
Other Assets		427,000,000	270,000,000
Accrued Liabilities		(7,000,000)	(8,000,000)
Other Liabilities - Noncurrent		(641,000,000)	(690,000,000)
Net amount recognized		(221,000,000)	(428,000,000)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income [Abstract]
Transition obligation		0	1,000,000
Prior service cost (credit)		(22,000,000)	(27,000,000)
Net actuarial loss		464,000,000	493,000,000
Net amount recognized		442,000,000	467,000,000
Defined Benefit Plan Disclosure [Abstract]
Service cost		51,000,000	56,000,000	58,000,000
Interest cost		177,000,000	231,000,000	215,000,000
Expected return on plan assets		(358,000,000)	(354,000,000)	(308,000,000)
Amortization of transition obligations		1,000,000	2,000,000	2,000,000
Amortization of prior service cost (credit)		(3,000,000)	(2,000,000)	(2,000,000)
Recognition of actuarial losses		15,000,000	223,000,000	51,000,000
Settlements and curtailments		2,000,000	0	0
Net periodic benefit (income) cost		(115,000,000)	156,000,000	16,000,000
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss [Abstract]
Actuarial (gains) losses		27,000,000	333,000,000	(48,000,000)
Prior service cost (credit)		0	(17,000,000)	0
Transition obligation recognized during year		(1,000,000)	(2,000,000)	(2,000,000)
Prior service (cost) credit recognized during year		3,000,000	2,000,000	2,000,000
Actuarial losses recognized during year		(17,000,000)	(223,000,000)	(51,000,000)
Foreign exchange translation adjustments		(37,000,000)	(50,000,000)	3,000,000
Total recognized in other comprehensive (income) loss		(25,000,000)	43,000,000	(96,000,000)
Total recognized in net periodic benefit (income) cost and other comprehensive (income) loss		$ (140,000,000)	$ 199,000,000	$ (80,000,000)
Non-U.S. Pension Plans, Defined Benefit [Member] | Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Abstract]
Amortization of prior service cost (credit)	$ (3,000,000)