LONG-TERM DEBT AND CREDIT AGREEMENTS (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended			1 Months Ended		3 Months Ended																								1 Months Ended			1 Months Ended			12 Months Ended
	Feb. 28, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Apr. 30, 2012 Syndicate Of Banks [Member] Revolving Credit Facility [Member]	Mar. 31, 2011 Syndicate Of Banks [Member] Revolving Credit Facility [Member]	Dec. 31, 2011 Notes 6.125% due 2011 [Member]	Mar. 31, 2011 Notes 5.625% due 2012 [Member]	Dec. 31, 2012 Notes 4.25% due 2013 [Member]	Dec. 31, 2011 Notes 4.25% due 2013 [Member]	Dec. 31, 2012 Notes 3.875% due 2014 [Member]	Dec. 31, 2011 Notes 3.875% due 2014 [Member]	Dec. 31, 2012 Notes 5.40% due 2016 [Member]	Dec. 31, 2011 Notes 5.40% due 2016 [Member]	Dec. 31, 2012 Notes 5.30% due 2017 [Member]	Dec. 31, 2011 Notes 5.30% due 2017 [Member]	Dec. 31, 2012 Notes 5.30% due 2018 [Member]	Dec. 31, 2011 Notes 5.30% due 2018 [Member]	Dec. 31, 2012 Notes 5.00% due 2019 [Member]	Dec. 31, 2011 Notes 5.00% due 2019 [Member]	Dec. 31, 2012 Industrial development bond obligations, floating rate maturing at various dates through 2037 [Member]	Dec. 31, 2011 Industrial development bond obligations, floating rate maturing at various dates through 2037 [Member]	Dec. 31, 2012 Debentures 6.625% due 2028 [Member]	Dec. 31, 2011 Debentures 6.625% due 2028 [Member]	Dec. 31, 2012 Debentures 9.065% due 2033 [Member]	Dec. 31, 2011 Debentures 9.065% due 2033 [Member]	Dec. 31, 2012 Notes 5.70% due 2036 [Member]	Dec. 31, 2011 Notes 5.70% due 2036 [Member]	Dec. 31, 2012 Notes 5.70% due 2037 [Member]	Dec. 31, 2011 Notes 5.70% due 2037 [Member]	Feb. 28, 2011 Notes 4.25% Due 2021 [Member]	Dec. 31, 2012 Notes 4.25% Due 2021 [Member]	Dec. 31, 2011 Notes 4.25% Due 2021 [Member]	Feb. 28, 2011 Notes 5.375% Due 2041 [Member]	Dec. 31, 2012 Notes 5.375% Due 2041 [Member]	Dec. 31, 2011 Notes 5.375% Due 2041 [Member]	Dec. 31, 2012 Other including capitalized leases, .2% to 9.5% maturing at various dates through 2023 [Member]	Dec. 31, 2011 Other including capitalized leases, .2% to 9.5% maturing at various dates through 2023 [Member]
Debt Instrument [Line Items]
Senior Notes									$ 600	$ 600	$ 600	$ 600	$ 400	$ 400	$ 400	$ 400	$ 900	$ 900	$ 900	$ 900							$ 550	$ 550	$ 600	$ 600		$ 800	$ 800		$ 600	$ 600
Industrial development bond																					37	37
Debentures																							216	216	51	51
Other long term debt																																					366	242
Total long-term debt, including current portion			7,020	6,896
Less current portion			(625)	(15)
Total Noncurrent Debt			6,395	6,881
Various interest rates									4.25%		3.875%		5.40%		5.30%		5.30%		5.00%				6.625%		9.065%		5.70%		5.70%			4.25%			5.375%
Interest rate range minimum																																					0.20%
Interest rate range maximum																																					9.50%
Repayment of notes							500	400
Proceeds from Issuance of Long-term Debt	1,400
Debt Instrument, Issuance Date																															Feb. 28, 2011			Feb. 28, 2011
Payments of debt extinguishment costs		29						29
Line of Credit Facility [Line Items]
Maximum borrowing capacity					3,500	2,800
Sub-Limit for Letters of Credit					700
Line Of credit facility covenant terms					The Credit Agreement does not restrict our ability to pay dividends and contains no financial covenants. The failure to comply with customary conditions or the occurrence of customary events of default contained in the credit agreement would prevent any further borrowings and would generally require the repayment of any outstanding borrowings under the credit agreement. Such events of default include: (a) non-payment of credit agreement debt, interest or fees; (b) non-compliance with the terms of the credit agreement covenants; (c) cross-default to other debt in certain circumstances; (d) bankruptcy; and (e) defaults upon obligations under Employee Retirement Income Security Act. Additionally, each of the banks has the right to terminate its commitment to lend additional funds or issue letters of credit under the agreement if any person or group acquires beneficial ownership of 30 percent or more of our voting stock, or, during any 12-month period, individuals who were directors of Honeywell at the beginning of the period cease to constitute a majority of the Board of Directors.
Facility expiration date					Apr. 02, 2017
Facility fee percent					0.08%
Payments of debt issuance costs	19
Line of credit facility, current borrowing capacity					3,000
Interest rates applied to borrowings					Revolving credit borrowings under the Credit Agreement would bear interest, at Honeywell's option, (A) (1) at a rate equal to the highest of (a) the floating base rate publicly announced by Citibank, N.A., (b) 0.5 percent above the Federal funds rate or (c) LIBOR plus 1.00 percent, plus (2) a margin based on Honeywell's credit default swap mid-rate spread and subject to a floor and a cap as set forth in the Credit Agreement (the "Applicable Margin") minus 1.00 percent, provided such margin shall not be less than zero; or (B) at a rate equal to LIBOR plus the Applicable Margin; or (C) by a competitive bidding procedure.
Facility initiation date					Apr. 02, 2012
Minimum ownership percentage to trigger termination option					30.00%
Long Term Debt By Maturity [Abstract]
2013			625
2014			660
2015			51
2016			454
2017			409
Thereafter			4,821
Total long-term debt, including current portion			7,020	6,896
Less current portion			(625)	(15)
Total Long-term debt			$ 6,395	$ 6,881