CONSOLIDATED STATEMENT OF SHAREOWNERS' EQUITY (unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common stock, par value	Additional paid-in capital	Treasury stock	Retained earnings	Accumulated other comprehensive income (loss)	Noncontrolling interest
Beginning balance at Dec. 31, 2021			$ 8,141	$ (30,462)	$ 42,827	$ (2,895)	$ 673
Treasury stock, beginning balance (in shares) at Dec. 31, 2021				(272.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reacquired stock or repurchases of common stock (in shares)				(13.0)
Reacquired stock or repurchases of common stock				$ (2,437)
Issued for employee savings and option plans (in shares)				1.9
Issued for employee savings and option plans			134	$ 85
Stock-based compensation expense			122
Net income attributable to Honeywell	$ 2,395				2,395
Dividends on common stock					(1,339)
Net income (loss) attributable to noncontrolling interest	(2)						2
Foreign exchange translation adjustment	24					31	(7)
Pension and other postretirement benefit adjustments	(34)					(34)
Changes in fair value of available for sale investments						(9)
Changes in fair value of cash flow hedges	24					24
Dividends paid							(33)
Contributions from noncontrolling interest holders							14
Treasury stock, ending balance (in shares) at Jun. 30, 2022				(283.9)
Ending balance at Jun. 30, 2022	$ 18,190	$ 958	8,397	$ (32,814)	43,883	(2,883)	649
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends per share of common stock (in dollars per share)	$ 1.960
Beginning balance at Mar. 31, 2022			8,326	$ (31,420)	43,288	(2,787)	686
Treasury stock, beginning balance (in shares) at Mar. 31, 2022				(276.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reacquired stock or repurchases of common stock (in shares)				(7.5)
Reacquired stock or repurchases of common stock				$ (1,419)
Issued for employee savings and option plans (in shares)				0.5
Issued for employee savings and option plans			18	$ 25
Stock-based compensation expense			53
Net income attributable to Honeywell	$ 1,261				1,261
Dividends on common stock					(666)
Net income (loss) attributable to noncontrolling interest	(2)						2
Foreign exchange translation adjustment	(102)					(95)	(7)
Pension and other postretirement benefit adjustments	(17)					(17)
Changes in fair value of available for sale investments						(3)
Changes in fair value of cash flow hedges	19					19
Dividends paid							(32)
Contributions from noncontrolling interest holders							0
Treasury stock, ending balance (in shares) at Jun. 30, 2022				(283.9)
Ending balance at Jun. 30, 2022	$ 18,190	$ 958	8,397	$ (32,814)	43,883	(2,883)	649
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends per share of common stock (in dollars per share)	$ 0.980
Common stock, par value (in shares)	673.7	957.6
Total shareowners' equity (in shares)	673.7	957.6
Beginning balance at Dec. 31, 2022	$ 17,319		8,564	$ (34,443)	45,093	(3,475)	622
Treasury stock, beginning balance (in shares) at Dec. 31, 2022				(290.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reacquired stock or repurchases of common stock (in shares)				(6.0)
Reacquired stock or repurchases of common stock				$ (1,176)
Issued for employee savings and option plans (in shares)				2.4
Issued for employee savings and option plans			193	$ 109
Stock-based compensation expense			109
Net income attributable to Honeywell	2,881				2,881
Dividends on common stock					(1,378)
Net income (loss) attributable to noncontrolling interest	(28)						28
Foreign exchange translation adjustment	(135)					(132)	(3)
Pension and other postretirement benefit adjustments	(24)					(24)
Changes in fair value of available for sale investments						3
Changes in fair value of cash flow hedges	17					17
Dividends paid							(52)
Contributions from noncontrolling interest holders							0
Treasury stock, ending balance (in shares) at Jun. 30, 2023				(293.6)
Ending balance at Jun. 30, 2023	$ 17,894	$ 958	8,866	$ (35,510)	46,596	(3,611)	595
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends per share of common stock (in dollars per share)	$ 2.060
Beginning balance at Mar. 31, 2023			8,774	$ (35,072)	45,797	(3,538)	596
Treasury stock, beginning balance (in shares) at Mar. 31, 2023				(291.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reacquired stock or repurchases of common stock (in shares)				(2.5)
Reacquired stock or repurchases of common stock				$ (477)
Issued for employee savings and option plans (in shares)				0.8
Issued for employee savings and option plans			42	$ 39
Stock-based compensation expense			50
Net income attributable to Honeywell	$ 1,487				1,487
Dividends on common stock					(688)
Net income (loss) attributable to noncontrolling interest	(14)						14
Foreign exchange translation adjustment	(77)					(73)	(4)
Pension and other postretirement benefit adjustments	(12)					(12)
Changes in fair value of available for sale investments						9
Changes in fair value of cash flow hedges	3					3
Dividends paid							(11)
Contributions from noncontrolling interest holders							0
Treasury stock, ending balance (in shares) at Jun. 30, 2023				(293.6)
Ending balance at Jun. 30, 2023	$ 17,894	$ 958	$ 8,866	$ (35,510)	$ 46,596	$ (3,611)	$ 595
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends per share of common stock (in dollars per share)	$ 1.030
Common stock, par value (in shares)	664.0	957.6
Total shareowners' equity (in shares)	664.0	957.6