CONSOLIDATED STATEMENT OF SHAREOWNERS EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]
Balance at beginning of period at Dec. 31, 2017			$ 6,212	$ (15,914)	$ 27,481	$ (2,235)	$ 163
Issued for employee savings and option plans			16	$ 61
Stock Issued During Period Shares For Employee Savings And Option Plans				3.1
Stock-based compensation expense			89
Treasury Stock, Shares beginning balance at Dec. 31, 2017				(206.7)
Reacquired stock or repurchases of common stock				$ (1,704)
Reacquired stock or repurchases of common stock, shares				(11.4)
Treasury Stock, Shares ending balance at Jun. 30, 2018				(215.0)
Net income attributable to Honeywell	$ 2,706				2,706
Acquisitions, divestitures, and other							1
Dividends on common stock					(1,120)
Foreign exchange translation adjustment	12					12	(3)
Pension and other postretirement benefits adjustments	(32)					(32)
Changes in fair value of cash flow hedges	33					33
Net Income attributable to noncontrolling interest	$ 26						26
Dividends Paid							(14)
Cash dividends per share of common stock	$ 1.490
Balance at end of period at Jun. 30, 2018	$ 17,000	$ 958	6,317	$ (17,557)	29,331	(2,222)	173
Common Stock, Shares, Issued, Ending Balance at Jun. 30, 2018	957.6	957.6
Balance at beginning of period at Mar. 31, 2018			6,250	(16,834)	28,623	(2,174)	179
Issued for employee savings and option plans			30	$ 41
Stock Issued During Period Shares For Employee Savings And Option Plans				1.0
Stock-based compensation expense			37
Treasury Stock, Shares beginning balance at Mar. 31, 2018				(210.7)
Reacquired stock or repurchases of common stock				$ (764)
Reacquired stock or repurchases of common stock, shares				(5.3)
Treasury Stock, Shares ending balance at Jun. 30, 2018				(215.0)
Net income attributable to Honeywell	$ 1,267				1,267
Dividends on common stock					(559)
Foreign exchange translation adjustment	(79)					(79)	(7)
Pension and other postretirement benefits adjustments	(16)					(16)
Changes in fair value of cash flow hedges	47					47
Net Income attributable to noncontrolling interest	$ 13						12
Dividends Paid							(11)
Cash dividends per share of common stock	$ 0.745
Balance at end of period at Jun. 30, 2018	$ 17,000	$ 958	6,317	$ (17,557)	29,331	(2,222)	173
Common Stock, Shares, Issued, Ending Balance at Jun. 30, 2018	957.6	957.6
Shares outstanding	742.6
Balance at beginning of period at Dec. 31, 2018	$ 18,358		6,452	(19,771)	33,978	(3,437)	178
Issued for employee savings and option plans			253	$ 265
Stock Issued During Period Shares For Employee Savings And Option Plans				6.1
Stock-based compensation expense			75
Treasury Stock, Shares beginning balance at Dec. 31, 2018				(228.0)
Reacquired stock or repurchases of common stock				$ (2,650)
Reacquired stock or repurchases of common stock, shares				(16.2)
Treasury Stock, Shares ending balance at Jun. 30, 2019				(238.1)
Net income attributable to Honeywell	2,957				2,957
Dividends on common stock					(1,194)
Foreign exchange translation adjustment	14					14	2
Pension and other postretirement benefits adjustments	(39)					(39)
Changes in fair value of cash flow hedges	9					9
Net Income attributable to noncontrolling interest	$ 35						35
Dividends Paid							(25)
Cash dividends per share of common stock	$ 1.640
Balance at end of period at Jun. 30, 2019	$ 18,060	$ 958	6,780	$ (22,156)	35,741	(3,453)	190
Common Stock, Shares, Issued, Ending Balance at Jun. 30, 2019	957.6	957.6
Balance at beginning of period at Mar. 31, 2019			6,652	(20,392)	34,794	(3,246)	189
Issued for employee savings and option plans			94	$ 136
Stock Issued During Period Shares For Employee Savings And Option Plans				2.9
Stock-based compensation expense			34
Treasury Stock, Shares beginning balance at Mar. 31, 2019				(229.9)
Reacquired stock or repurchases of common stock				$ (1,900)
Reacquired stock or repurchases of common stock, shares				(11.1)
Treasury Stock, Shares ending balance at Jun. 30, 2019				(238.1)
Net income attributable to Honeywell	$ 1,541				1,541
Dividends on common stock					(594)
Foreign exchange translation adjustment	(191)					(191)	(2)
Pension and other postretirement benefits adjustments	(20)					(19)
Changes in fair value of cash flow hedges	3					3
Net Income attributable to noncontrolling interest	$ 15						15
Dividends Paid							(12)
Cash dividends per share of common stock	$ 0.820
Balance at end of period at Jun. 30, 2019	$ 18,060	$ 958	$ 6,780	$ (22,156)	$ 35,741	$ (3,453)	$ 190
Common Stock, Shares, Issued, Ending Balance at Jun. 30, 2019	957.6	957.6
Shares outstanding	719.5