CONSOLIDATED STATEMENT OF SHAREOWNERS EQUITY (USD $) In Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Parent [Member]	Noncontrolling Interest [Member]	Comprehensive Income [Member]
Balance at, beginning of period at Dec. 31, 2008			$ 3,994	$ (10,206)	$ 13,391	$ (1,078)		$ 82
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2008				(223.0)
Number of shares outstanding		957.6
Common stock, shares							764.2
Reacquired stock or repurchases of common stock	0			0
Issued for employee savings and option plans			(99)	281
Issued for employee savings and option plans, shares				6.6
Contributed to pension plans			(190)	930
Contributed to pension plans, shares				23.0
Stock-based compensation expense			118
Other owner changes	0		0					(3)
Other owner changes, shares	0			0
Net income attributable to Honeywell	1,548				1,548
Dividends paid on common stock					(916)			(9)
Net income	1,584								1,584
Foreign exchange translation adjustments	259					259		(1)	259
Pension and other postretirement benefit adjustments	(271)					(271)			(271)
Changes in fair value of available for sale investments	112					112			112
Changes in fair value of effective cash flow hedges	30					30			30
Acquisitions								5
Interest sold (bought)	0
Net income attributable to non controlling interest	36							36
Total comprehensive income									1,714
Comprehensive income attributable to non controlling interest									(36)
Comprehensive income (loss) attributable to Honeywell									1,678
Balance at, end of period at Dec. 31, 2009		958	3,823	(8,995)	14,023	(948)	8,971	110
Treasury Stock, Shares, Ending Balance at Dec. 31, 2009				(193.4)
Number of shares outstanding		957.6
Common stock, shares							783.0
Reacquired stock or repurchases of common stock	0			0
Reacquired stock or repurchases of common stock, shares				0
Issued for employee savings and option plans			(35)	328
Issued for employee savings and option plans, shares				8.9
Contributed to pension plans			32	368
Contributed to pension plans, shares				9.9
Stock-based compensation expense			157
Other owner changes	0		0
Other owner changes, shares	0
Net income attributable to Honeywell	2,022				2,022
Dividends paid on common stock					(948)			(10)
Net income	2,035								2,035
Foreign exchange translation adjustments	(249)					(249)		2	(249)
Pension and other postretirement benefit adjustments	44					44			44
Changes in fair value of available for sale investments	90					90			90
Changes in fair value of effective cash flow hedges	(4)					(4)			(4)
Acquisitions								2
Interest sold (bought)								4
Net income attributable to non controlling interest	13							13
Total comprehensive income									1,916
Comprehensive income attributable to non controlling interest									(15)
Comprehensive income (loss) attributable to Honeywell									1,901
Balance at, end of period at Dec. 31, 2010	10,787	958	3,977	(8,299)	15,097	(1,067)	10,787	121
Treasury Stock, Shares, Ending Balance at Dec. 31, 2010				(174.6)
Balance at, beginning of period at Sep. 30, 2010
Number of shares outstanding		957.6
Common stock, shares							783.0
Net income attributable to Honeywell	369
Balance at, end of period at Dec. 31, 2010	10,787	958	3,977	(8,299)	15,097	(1,067)	10,787	121
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2010				(174.6)
Number of shares outstanding		957.6
Common stock, shares							774.7
Reacquired stock or repurchases of common stock	(1,085)			(1,085)
Reacquired stock or repurchases of common stock, shares	20.3			(20.3)
Issued for employee savings and option plans			14	436
Issued for employee savings and option plans, shares				12.0
Contributed to pension plans	0		0
Contributed to pension plans, shares				0
Stock-based compensation expense			168
Other owner changes	0		(2)
Other owner changes, shares	0
Net income attributable to Honeywell	2,067				2,067
Dividends paid on common stock					(1,081)			(23)
Net income	2,074								2,074
Foreign exchange translation adjustments	(146)					(146)		(4)	(146)
Pension and other postretirement benefit adjustments	(209)					(209)			(209)
Changes in fair value of available for sale investments	12					12			12
Changes in fair value of effective cash flow hedges	(34)					(34)			(34)
Acquisitions								0
Interest sold (bought)								(5)
Net income attributable to non controlling interest	7							7
Total comprehensive income									1,697
Comprehensive income attributable to non controlling interest									(3)
Comprehensive income (loss) attributable to Honeywell									1,694
Balance at, end of period at Dec. 31, 2011	10,902	958	4,157	(8,948)	16,083	(1,444)	10,902	96
Treasury Stock, Shares, Ending Balance at Dec. 31, 2011				(182.9)
Balance at, beginning of period at Sep. 30, 2011
Number of shares outstanding		957.6
Common stock, shares							774.7
Net income attributable to Honeywell	(310)
Balance at, end of period at Dec. 31, 2011	$ 10,902	$ 958					$ 10,902