EARNINGS (LOSS) PER SHARE (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share [Abstract]
Net income attributable to Honeywell	$ 966	$ 823
Weighted average shares outstanding	785.8	777.3
Earnings per share of common stock - basic	$ 1.23	$ 1.06
Assuming dilution
Net income attributable to Honeywell	$ 966	$ 823
Average shares
Weighted average shares outstanding	785.8	777.3
Dilutive securities issuable - stock plans	11.3	10.8
Total weighted average diluted shares outstanding	797.1	788.1
Earnings per share of common stock - assuming dilution	$ 1.21	$ 1.04
Earnings Per Share Paragraph Details [Abstract]
Stock options excluded from diluted computations	2.7	9.6