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, 2017		$ 958,000,000	$ 6,212,000,000	$ (15,914,000,000)	$ 27,481,000,000	$ (2,235,000,000)	$ 163,000,000
Common Stock, Shares, Issued, Beginning Balance at Dec. 31, 2017		957.6
Issued for employee savings and option plans			(14,000,000)	$ 20,000,000
Stock Issued During Period Shares For Employee Savings And Option Plans				2.1
Stock-based compensation expense			52,000,000
Treasury Stock, Shares beginning balance at Dec. 31, 2017				(206.7)
Reacquired stock or repurchases of common stock				$ (940,000,000)
Reacquired stock or repurchases of common stock, shares				(6.1)
Treasury Stock, Shares ending balance at Mar. 31, 2018				(210.7)
Net income attributable to Honeywell	$ 1,439,000,000				1,439,000,000
Acquisitions, divestitures, and other							1,000,000
Dividends on common stock					(561,000,000)
Foreign exchange translation adjustment	91,000,000					91,000,000	4,000,000
Pension and other postretirement benefits adjustments	(16,000,000)					(16,000,000)
Changes in fair value of cash flow hedges	(14,000,000)					(14,000,000)
Net Income attributable to noncontrolling interest	$ 13,000,000						14,000,000
Dividends Paid							(3,000,000)
Cash dividends per share of common stock	$ 0.745
Balance at end of period at Mar. 31, 2018	$ 17,002,000,000		6,250,000,000	$ (16,834,000,000)	28,623,000,000	(2,174,000,000)	179,000,000
Common Stock, Shares, Issued, Ending Balance at Mar. 31, 2018	957.6
Adoption of new accounting standards					264,000,000
Shares outstanding	746.9
Balance at beginning of period at Dec. 31, 2018	$ 18,358,000,000	$ 958,000,000	6,452,000,000	(19,771,000,000)	33,978,000,000	(3,437,000,000)	178,000,000
Common Stock, Shares, Issued, Beginning Balance at Dec. 31, 2018		957.6
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	$ 0.82
Balance at end of period at Mar. 31, 2019	$ 18,956,000,000		$ 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
Adoption of new accounting standards					$ 0
Shares outstanding	727.7