CONSOLIDATED STATEMENT OF SHAREOWNERS EQUITY - USD ($) shares 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, 2018			$ 6,452,000,000	$ (19,771,000,000)	$ 33,978,000,000	$ (3,437,000,000)	$ 178,000,000
Issued for employee savings and option plans			159,000,000	$ 129,000,000
Stock Issued During Period Shares For Employee Savings And Option Plans				3.2
Stock-based compensation expense			41,000,000
Treasury Stock, Shares beginning balance at Dec. 31, 2018				(228.0)
Reacquired stock or repurchases of common stock				$ (750,000,000)
Reacquired stock or repurchases of common stock, shares				(5.1)
Treasury Stock, Shares ending balance at Mar. 31, 2019				(229.9)
Net income attributable to Honeywell	$ 1,416,000,000				1,416,000,000
Acquisitions, divestitures, and other							0
Dividends on common stock					(600,000,000)
Foreign exchange translation adjustment	205,000,000					205,000,000	4,000,000
Pension and other postretirement benefits adjustments	(19,000,000)					(19,000,000)
Changes in fair value of cash flow hedges	6,000,000					6,000,000
Net Income attributable to noncontrolling interest	$ 20,000,000						20,000,000
Dividends Paid							(13,000,000)
Cash dividends per share of common stock	$ 0.820
Balance at end of period at Mar. 31, 2019	$ 18,956,000,000	$ 958,000,000	6,652,000,000	$ (20,392,000,000)	34,794,000,000	(3,245,000,000)	189,000,000
Common Stock, Shares, Issued, Ending Balance at Mar. 31, 2019	957.6	957.6
Shares outstanding	727.7
Balance at beginning of period at Dec. 31, 2019	$ 18,706,000,000		6,876,000,000	(23,836,000,000)	37,693,000,000	(3,197,000,000)	212,000,000
Issued for employee savings and option plans			127,000,000	$ 116,000,000
Stock Issued During Period Shares For Employee Savings And Option Plans				2.4
Stock-based compensation expense			44,000,000
Treasury Stock, Shares beginning balance at Dec. 31, 2019				(246.5)
Reacquired stock or repurchases of common stock				$ (1,923,000,000)
Reacquired stock or repurchases of common stock, shares				(11.7)
Treasury Stock, Shares ending balance at Mar. 31, 2020				(255.8)
Net income attributable to Honeywell	1,581,000,000				1,581,000,000
Acquisitions, divestitures, and other							(6,000,000)
Dividends on common stock					(639,000,000)
Foreign exchange translation adjustment	(276,000,000)					(276,000,000)	(7,000,000)
Pension and other postretirement benefits adjustments	(20,000,000)					(20,000,000)
Changes in fair value of cash flow hedges	140,000,000					140,000,000
Net Income attributable to noncontrolling interest	$ 25,000,000						25,000,000
Dividends Paid							(3,000,000)
Cash dividends per share of common stock	$ 0.900
Balance at end of period at Mar. 31, 2020	$ 17,865,000,000	$ 958,000,000	$ 7,047,000,000	$ (25,643,000,000)	$ 38,635,000,000	$ (3,353,000,000)	$ 221,000,000
Common Stock, Shares, Issued, Ending Balance at Mar. 31, 2020	957.6	957.6
Shares outstanding	701.8