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, 2022			$ 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 compensation expense			109
Impact of Quantinuum contribution			0
Net income attributable to Honeywell	$ 2,881				2,881
Dividends on common stock					(1,378)
Net income 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)	$ 2.06
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 compensation expense			50
Impact of Quantinuum contribution			0
Net income attributable to Honeywell	$ 1,487				1,487
Dividends on common stock					(688)
Net income 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)	$ 1.03
Common stock, par value (in shares)	664.0	957.6
Total shareowners' equity (in shares)	664.0	957.6
Beginning balance at Dec. 31, 2023	$ 16,434		9,062	$ (38,008)	47,979	(4,135)	578
Treasury stock, beginning balance (in shares) at Dec. 31, 2023				(305.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reacquired stock or repurchases of common stock (in shares)				(6.1)
Reacquired stock or repurchases of common stock				$ (1,200)
Issued for employee savings and option plans (in shares)				4.0
Issued for employee savings and option plans			289	$ 201
Stock compensation expense			108
Impact of Quantinuum contribution			36
Net income attributable to Honeywell	3,007				3,007
Dividends on common stock					(1,410)
Net income attributable to noncontrolling interest	(28)						28
Foreign exchange translation adjustment	59					83	(24)
Pension and other postretirement benefit adjustments	(10)					(10)
Changes in fair value of available for sale investments						(1)
Changes in fair value of cash flow hedges	(12)					(12)
Dividends paid							(48)
Contributions from noncontrolling interest holders							29
Treasury stock, ending balance (in shares) at Jun. 30, 2024				(307.9)
Ending balance at Jun. 30, 2024	$ 17,510	$ 958	9,495	$ (39,007)	49,576	(4,075)	563
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends per share of common stock (in dollars per share)	$ 2.16
Beginning balance at Mar. 31, 2024			9,353	$ (38,544)	48,735	(4,048)	591
Treasury stock, beginning balance (in shares) at Mar. 31, 2024				(306.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reacquired stock or repurchases of common stock (in shares)				(2.7)
Reacquired stock or repurchases of common stock				$ (529)
Issued for employee savings and option plans (in shares)				1.2
Issued for employee savings and option plans			87	$ 66
Stock compensation expense			55
Impact of Quantinuum contribution			0
Net income attributable to Honeywell	$ 1,544				1,544
Dividends on common stock					(703)
Net income attributable to noncontrolling interest	(16)						16
Foreign exchange translation adjustment	5					5	0
Pension and other postretirement benefit adjustments	(5)					(5)
Changes in fair value of available for sale investments						(1)
Changes in fair value of cash flow hedges	(26)					(26)
Dividends paid							(44)
Contributions from noncontrolling interest holders							0
Treasury stock, ending balance (in shares) at Jun. 30, 2024				(307.9)
Ending balance at Jun. 30, 2024	$ 17,510	$ 958	$ 9,495	$ (39,007)	$ 49,576	$ (4,075)	$ 563
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends per share of common stock (in dollars per share)	$ 1.08
Common stock, par value (in shares)	649.7	957.6
Total shareowners' equity (in shares)	649.7	957.6