SEGMENT FINANCIAL DATA (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014 Segments	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of segment profit to consolidated [Abstract]
Segment Reporting Segment Profit Loss									$ 6,696,000,000	$ 6,351,000,000	$ 5,879,000,000
Other income (expense)									269,000,000	202,000,000	25,000,000
Interest and other financial charges									(318,000,000)	(327,000,000)	(351,000,000)
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Stock compensation expense									(187,000,000)	(170,000,000)	(170,000,000)
Repositioning and other charges									(598,000,000)	(663,000,000)	(443,000,000)
Income from continuing operations before taxes									5,818,000,000	5,412,000,000	3,875,000,000
Segment Reporting Information [Line Items]
Product sales									32,398,000,000	31,214,000,000	29,812,000,000
Service sales									7,908,000,000	7,841,000,000	7,853,000,000
Net Sales	10,266,000,000	10,108,000,000	10,253,000,000	9,679,000,000	10,387,000,000	9,647,000,000	9,693,000,000	9,328,000,000	40,306,000,000	39,055,000,000	37,665,000,000
Depreciation and amortization									924,000,000	989,000,000	926,000,000
Segment Reporting Segment Profit Loss									6,696,000,000	6,351,000,000	5,879,000,000
Capital expenditures									1,094,000,000	947,000,000	884,000,000
Total Assets	45,451,000,000				45,435,000,000				45,451,000,000	45,435,000,000	41,853,000,000
Additional Information About Entitys Reportable Segments									Following the closing of the sale, the Company announced the realignment of its Transportation Systems business segment with its Aerospace business segment. Under the realigned segment reporting structure, the Company has three business segments: Aerospace, Automation and Control Solutions and Performance Materials and Technologies. This realignment has no impact on the Company’s historical consolidated financial position, results of operations or cash flows. The Company has reported its financial performance based on the inclusion of Transportation Systems in Aerospace for all periods presented.
Segment Financial Data Paragraph Details [Abstract]
Number Of Reportable Segments									3
Honeywell Process Solutions [Member]
Segment Reporting Information [Line Items]
Additional Information About Entitys Reportable Segments									In April 2014, the Company announced the realignment of our Honeywell Process Solutions business from Automation and Control Solutions into Performance Materials and Technologies. The Company has reported its financial performance based on the inclusion of Honeywell Process Solutions in Performance Materials and Technologies for all periods presented.
Transportation Systems [Member]
Segment Reporting Information [Line Items]
Additional Information About Entitys Reportable Segments									In July 2014, following the closing of the sale of its Friction Materials business, the Company announced the realignment of its Transportation Systems business segment with its Aerospace business segment. Under the realigned segment reporting structure, the Company has three business segments: Aerospace, Automation and Control Solutions and Performance Materials and Technologies. The Company has reported its financial performance based on the inclusion of Transportation Systems in Aerospace for all periods presented.
Aerospace [Member]
Reconciliation of segment profit to consolidated [Abstract]
Segment Reporting Segment Profit Loss									2,915,000,000	2,870,000,000	2,711,000,000
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Repositioning and other charges									(193,000,000)	(235,000,000)	(192,000,000)
Segment Reporting Information [Line Items]
Product sales									10,773,000,000	10,798,000,000	10,560,000,000
Service sales									4,825,000,000	4,937,000,000	5,041,000,000
Net Sales									15,598,000,000	15,735,000,000	15,601,000,000
Depreciation and amortization									277,000,000	290,000,000	296,000,000
Segment Reporting Segment Profit Loss									2,915,000,000	2,870,000,000	2,711,000,000
Capital expenditures									315,000,000	310,000,000	320,000,000
Total Assets	11,151,000,000				11,379,000,000				11,151,000,000	11,379,000,000	11,024,000,000
Automation and Control Solutions [Member]
Reconciliation of segment profit to consolidated [Abstract]
Segment Reporting Segment Profit Loss									2,200,000,000	1,983,000,000	1,836,000,000
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Repositioning and other charges									(80,000,000)	(68,000,000)	(13,000,000)
Segment Reporting Information [Line Items]
Product sales									13,219,000,000	12,253,000,000	11,581,000,000
Service sales									1,268,000,000	1,212,000,000	1,206,000,000
Net Sales									14,487,000,000	13,465,000,000	12,787,000,000
Depreciation and amortization									306,000,000	302,000,000	302,000,000
Segment Reporting Segment Profit Loss									2,200,000,000	1,983,000,000	1,836,000,000
Capital expenditures									145,000,000	132,000,000	114,000,000
Total Assets	17,191,000,000				17,675,000,000				17,191,000,000	17,675,000,000	15,996,000,000
Performance Materials And Technologies [Member]
Reconciliation of segment profit to consolidated [Abstract]
Segment Reporting Segment Profit Loss									1,817,000,000	1,725,000,000	1,550,000,000
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Repositioning and other charges									(33,000,000)	(56,000,000)	(17,000,000)
Segment Reporting Information [Line Items]
Product sales									8,406,000,000	8,163,000,000	7,671,000,000
Service sales									1,815,000,000	1,692,000,000	1,606,000,000
Net Sales									10,221,000,000	9,855,000,000	9,277,000,000
Depreciation and amortization									284,000,000	336,000,000	265,000,000
Segment Reporting Segment Profit Loss									1,817,000,000	1,725,000,000	1,550,000,000
Capital expenditures									537,000,000	448,000,000	357,000,000
Total Assets	9,699,000,000				9,534,000,000				9,699,000,000	9,534,000,000	9,154,000,000
Corporate [Member]
Reconciliation of segment profit to consolidated [Abstract]
Segment Reporting Segment Profit Loss									(236,000,000)	(227,000,000)	(218,000,000)
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Repositioning and other charges									(292,000,000)	(304,000,000)	(221,000,000)
Segment Reporting Information [Line Items]
Depreciation and amortization									57,000,000	61,000,000	63,000,000
Segment Reporting Segment Profit Loss									(236,000,000)	(227,000,000)	(218,000,000)
Capital expenditures									97,000,000	57,000,000	93,000,000
Total Assets	7,410,000,000				6,847,000,000				7,410,000,000	6,847,000,000	5,679,000,000
Pension Plans, Defined Benefit [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Benefit plans income/(expense)									254,000,000	90,000,000	(36,000,000)
Pension mark-to-market adjustment									(249,000,000)	(51,000,000)	(957,000,000)
Other Postretirement Benefit Plans [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Benefit plans income/(expense)									$ (49,000,000)	$ (20,000,000)	$ (72,000,000)