CONSOLIDATED STATEMENT OF SHAREOWNERS' EQUITY (unaudited) - USD ($) shares 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, 2020			$ 7,292,000,000	$ (27,229,000,000)	$ 39,905,000,000	$ (3,377,000,000)	$ 241,000,000
Treasury stock, beginning balance (in shares) at Dec. 31, 2020				(260.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reacquired stock or repurchases of common stock (in shares)				(8.6)
Reacquired stock or repurchases of common stock				$ (1,849,000,000)
Issued for employee savings and option plans (in shares)				2.2
Issued for employee savings and option plans			158,000,000	$ 100,000,000
Stock-based compensation expense			116,000,000
Net income attributable to Honeywell	$ 2,857,000,000				2,857,000,000
Dividends on common stock					(1,295,000,000)
Acquisitions, divestitures, and other							5,000,000
Net income attributable to noncontrolling interest	(38,000,000)						38,000,000
Foreign exchange translation adjustment	343,000,000					342,000,000	1,000,000
Pension and other postretirement benefit adjustments	(43,000,000)					(43,000,000)
Changes in fair value of available for sale investments						(3,000,000)
Changes in fair value of cash flow hedges	6,000,000					6,000,000
Dividends paid							(25,000,000)
Contributions from noncontrolling interest holders							4,000,000
Treasury stock, ending balance (in shares) at Jun. 30, 2021				(267.2)
Ending balance at Jun. 30, 2021	$ 18,202,000,000	$ 958,000,000	7,566,000,000	$ (28,978,000,000)	41,467,000,000	(3,075,000,000)	264,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends per share of common stock (in dollars per share)	$ 1.860
Beginning balance at Mar. 31, 2021			7,505,000,000	$ (27,975,000,000)	40,682,000,000	(3,184,000,000)	266,000,000
Treasury stock, beginning balance (in shares) at Mar. 31, 2021				(263.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reacquired stock or repurchases of common stock (in shares)				(4.6)
Reacquired stock or repurchases of common stock				$ (1,027,000,000)
Issued for employee savings and option plans (in shares)				0.4
Issued for employee savings and option plans			22,000,000	$ 24,000,000
Stock-based compensation expense			39,000,000
Net income attributable to Honeywell	$ 1,430,000,000				1,430,000,000
Dividends on common stock					(645,000,000)
Acquisitions, divestitures, and other							5,000,000
Net income attributable to noncontrolling interest	(17,000,000)						17,000,000
Foreign exchange translation adjustment	129,000,000					129,000,000
Pension and other postretirement benefit adjustments	(21,000,000)					(21,000,000)
Changes in fair value of cash flow hedges	1,000,000					1,000,000
Dividends paid							(24,000,000)
Treasury stock, ending balance (in shares) at Jun. 30, 2021				(267.2)
Ending balance at Jun. 30, 2021	$ 18,202,000,000	$ 958,000,000	7,566,000,000	$ (28,978,000,000)	41,467,000,000	(3,075,000,000)	264,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends per share of common stock (in dollars per share)	$ 0.930
Common stock, par value (in shares)	957.6	957.6
Total shareowners' equity (in shares)	690.4
Beginning balance at Dec. 31, 2021	$ 19,242,000,000		8,141,000,000	$ (30,462,000,000)	42,827,000,000	(2,895,000,000)	673,000,000
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				$ (2,437,000,000)
Issued for employee savings and option plans (in shares)				1.9
Issued for employee savings and option plans			134,000,000	$ 85,000,000
Stock-based compensation expense			122,000,000
Net income attributable to Honeywell	2,395,000,000				2,395,000,000
Dividends on common stock					(1,339,000,000)
Net income attributable to noncontrolling interest	(2,000,000)						2,000,000
Foreign exchange translation adjustment	24,000,000					31,000,000	(7,000,000)
Pension and other postretirement benefit adjustments	(34,000,000)					(34,000,000)
Changes in fair value of available for sale investments						(9,000,000)
Changes in fair value of cash flow hedges	24,000,000					24,000,000
Dividends paid							(33,000,000)
Contributions from noncontrolling interest holders							14,000,000
Treasury stock, ending balance (in shares) at Jun. 30, 2022				(283.9)
Ending balance at Jun. 30, 2022	$ 18,190,000,000	$ 958,000,000	8,397,000,000	$ (32,814,000,000)	43,883,000,000	(2,883,000,000)	649,000,000
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			8,326,000,000	$ (31,420,000,000)	43,288,000,000	(2,787,000,000)	686,000,000
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				$ (1,419,000,000)
Issued for employee savings and option plans (in shares)				0.5
Issued for employee savings and option plans			18,000,000	$ 25,000,000
Stock-based compensation expense			53,000,000
Net income attributable to Honeywell	$ 1,261,000,000				1,261,000,000
Dividends on common stock					(666,000,000)
Net income attributable to noncontrolling interest	(2,000,000)						2,000,000
Foreign exchange translation adjustment	(102,000,000)					(95,000,000)	(7,000,000)
Pension and other postretirement benefit adjustments	(17,000,000)					(17,000,000)
Changes in fair value of available for sale investments						(3,000,000)
Changes in fair value of cash flow hedges	19,000,000					19,000,000
Dividends paid							(32,000,000)
Treasury stock, ending balance (in shares) at Jun. 30, 2022				(283.9)
Ending balance at Jun. 30, 2022	$ 18,190,000,000	$ 958,000,000	$ 8,397,000,000	$ (32,814,000,000)	$ 43,883,000,000	$ (2,883,000,000)	$ 649,000,000
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)	957.6	957.6
Total shareowners' equity (in shares)	673.7