CONSOLIDATED STATEMENT OF SHAREOWNERS EQUITY - USD ($) shares in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
Balance at, beginning of period at Dec. 31, 2015			$ 5,377,000,000	$ (11,664,000,000)	$ 25,480,000,000	$ (2,535,000,000)	$ 135,000,000
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2015				(187.2)
Reacquired stock or repurchases of common stock				$ (2,079,000,000)
Reacquired stock or repurchases of common stock, shares				(19.3)
Issued for employee savings and option plans			183,000,000	$ 377,000,000
Issued for employee savings and option plans, shares				9.7
Stock-based compensation expense			171,000,000
Other owner changes			50,000,000
Net income attributable to Honeywell	$ 4,812,000,000				4,812,000,000
Dividends on common stock					(1,883,000,000)
Redemption value adjustment					(1,000,000)
Foreign exchange translation adjustment	(52,000,000)					(52,000,000)	(8,000,000)
Dividends paid							(17,000,000)
Pensions and other postretirement benefit adjustments	(235,000,000)					(235,000,000)
Changes in fair value of effective cash flow hedges	108,000,000					108,000,000
Acquisitions							31,000,000
Spin-offs					(362,000,000)
Net income attributable to the noncontrolling interest	37,000,000						37,000,000
Balance at, end of period at Dec. 31, 2016	$ 18,883,000,000	$ 958,000,000	5,781,000,000	$ (13,366,000,000)	28,046,000,000	(2,714,000,000)	178,000,000
Treasury Stock, Shares, Ending Balance at Dec. 31, 2016				(196.8)
Common Stock Shares Issued		957.6
Adoption of new accounting standards					0
Common stock, shares	760.8
Reacquired stock or repurchases of common stock	$ (2,889,000,000)			$ (2,889,000,000)
Reacquired stock or repurchases of common stock, shares	(20.5)			(20.5)
Issued for employee savings and option plans			255,000,000	$ 341,000,000
Issued for employee savings and option plans, shares				10.6
Stock-based compensation expense			176,000,000
Other owner changes			0
Net income attributable to Honeywell	$ 1,545,000,000				1,545,000,000
Dividends on common stock					(2,101,000,000)
Redemption value adjustment					0
Foreign exchange translation adjustment	(37,000,000)					(37,000,000)	8,000,000
Dividends paid							(55,000,000)
Pensions and other postretirement benefit adjustments	677,000,000					677,000,000
Changes in fair value of effective cash flow hedges	(161,000,000)					(161,000,000)
Acquisitions							(11,000,000)
Spin-offs					(9,000,000)
Net income attributable to the noncontrolling interest	43,000,000						43,000,000
Balance at, end of period at Dec. 31, 2017	$ 16,665,000,000	$ 958,000,000	6,212,000,000	$ (15,914,000,000)	27,481,000,000	(2,235,000,000)	163,000,000
Treasury Stock, Shares, Ending Balance at Dec. 31, 2017				(206.7)
Common Stock Shares Issued		957.6
Adoption of new accounting standards					0
Common stock, shares	750.9
Reacquired stock or repurchases of common stock	$ (4,000,000,000)			$ (4,000,000,000)
Reacquired stock or repurchases of common stock, shares	(26.5)			(26.5)
Issued for employee savings and option plans			65,000,000	$ 143,000,000
Issued for employee savings and option plans, shares				5.2
Stock-based compensation expense			175,000,000
Other owner changes			0
Net income attributable to Honeywell	$ 6,765,000,000				6,765,000,000
Dividends on common stock					(2,279,000,000)
Redemption value adjustment					(2,000,000)
Foreign exchange translation adjustment	(685,000,000)					(728,000,000)	(10,000,000)
Dividends paid							(26,000,000)
Pensions and other postretirement benefit adjustments	(606,000,000)					(559,000,000)
Changes in fair value of effective cash flow hedges	85,000,000					85,000,000
Acquisitions							(12,000,000)
Spin-offs					1,749,000,000
Net income attributable to the noncontrolling interest	63,000,000						63,000,000
Balance at, end of period at Dec. 31, 2018	$ 18,358,000,000	$ 958,000,000	$ 6,452,000,000	$ (19,771,000,000)	33,978,000,000	$ (3,437,000,000)	$ 178,000,000
Treasury Stock, Shares, Ending Balance at Dec. 31, 2018				(228.0)
Common Stock Shares Issued		957.6
Adoption of new accounting standards					$ 264,000,000
Common stock, shares	729.6