CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 2,931,000,000	$ 2,074,000,000	$ 2,035,000,000
Other Comprehensive Income (Loss), Net Of Tax [Abstract]
Foreign exchange translation adjustment	282,000,000	(146,000,000)	(249,000,000)
Actuarial gains (losses)	(839,000,000)	(1,317,000,000)	(291,000,000)
Prior service credit (cost)	9,000,000	10,000,000	36,000,000
Prior service costs (credit) recognized during the year	6,000,000	(1,000,000)	(7,000,000)
Actuarial losses recognized during year	649,000,000	1,171,000,000	345,000,000
Settlements and curtailments	(2,000,000)	(107,000,000)	(26,000,000)
Foreign exchange translation and other	(21,000,000)	35,000,000	(13,000,000)
Pensions and other postretirement benefit adjustments	(198,000,000)	(209,000,000)	44,000,000
Unrealized gains (losses) for the period	(6,000,000)	12,000,000	90,000,000
Changes in fair value of available for sale investments	(6,000,000)	12,000,000	90,000,000
Effective portion of cash flow hedges recognized in other comprehensive income	14,000,000	(48,000,000)	(4,000,000)
Less: Reclassification adjustment for losses included in net income	(13,000,000)	(14,000,000)	0
Changes in fair value of effective cash flow hedges	27,000,000	(34,000,000)	(4,000,000)
Other comprehensive income (loss)	105,000,000	(377,000,000)	(119,000,000)
Comprehensive income (loss)	3,036,000,000	1,697,000,000	1,916,000,000
Less: Comprehensive income attributable to noncontrolling interest	5,000,000	3,000,000	15,000,000
Comprehensive income (loss) attributable to Honeywell	$ 3,031,000,000	$ 1,694,000,000	$ 1,901,000,000