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, 2016			$ 5,781,000,000	$ (13,366,000,000)	$ 28,046,000,000	$ (2,714,000,000)	$ 178,000,000
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2016				(196.8)
Reacquired stock or repurchases of common stock				$ (2,889,000,000)
Reacquired stock or repurchases of common stock, shares				(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
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 cash flow hedges	(161,000,000)					(161,000,000)
Acquisitions, divestitures, and other							(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)
Cash dividends per share of common stock	$ 2.740
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)
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
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 cash flow hedges	85,000,000					85,000,000
Acquisitions, divestitures, and other							(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)
Cash dividends per share of common stock	$ 3.055
Common Stock Shares Issued		957.6
Adoption of new accounting standards					264,000,000
Common stock, shares	729.6
Reacquired stock or repurchases of common stock				$ (4,400,000,000)
Reacquired stock or repurchases of common stock, shares	(26.5)
Issued for employee savings and option plans			271,000,000	$ 335,000,000
Issued for employee savings and option plans, shares				8.0
Stock-based compensation expense			153,000,000
Net income attributable to Honeywell	$ 6,143,000,000				6,143,000,000
Dividends on common stock					(2,428,000,000)
Redemption value adjustment					0
Foreign exchange translation adjustment	143,000,000					143,000,000	(5,000,000)
Dividends paid							(45,000,000)
Pensions and other postretirement benefit adjustments	86,000,000					86,000,000
Changes in fair value of cash flow hedges	11,000,000					11,000,000
Acquisitions, divestitures, and other							(3,000,000)
Spin-offs					0
Net income attributable to the noncontrolling interest	87,000,000						87,000,000
Balance at, end of period at Dec. 31, 2019	$ 18,706,000,000	$ 958,000,000	$ 6,876,000,000	$ (23,836,000,000)	37,693,000,000	$ (3,197,000,000)	$ 212,000,000
Treasury Stock, Shares, Ending Balance at Dec. 31, 2019				(246.5)
Cash dividends per share of common stock	$ 3.360
Common Stock Shares Issued		957.6
Adoption of new accounting standards					$ 0
Common stock, shares	711.1