EARNINGS (LOSS) PER SHARE (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Net income attributable to Honeywell	$ 1,021	$ 902	$ 1,987	$ 1,725
Weighted average shares outstanding	787.6	781.4	786.7	779.3
Earnings per share of common stock - basic	$ 1.30	$ 1.15	$ 2.53	$ 2.21
Assuming dilution
Net income attributable to Honeywell	$ 1,021	$ 902	$ 1,987	$ 1,725
Average shares
Weighted average shares outstanding	787.6	781.4	786.7	779.3
Dilutive securities issuable - stock plans	10.5	9.1	10.9	10.0
Total weighted average diluted shares outstanding	798.1	790.5	797.6	789.3
Earnings per share of common stock - assuming dilution	$ 1.28	$ 1.14	$ 2.49	$ 2.19
Earnings Per Share Paragraph Details [Abstract]
Stock options excluded from diluted computations	6.0	16.6	4.1	13.1