EARNINGS (LOSS) PER SHARE (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Earnings Per Share, Basic [Abstract]
Income from continuing operations less net income attributable to the noncontrolling interest	$ 902,000,000	$ 796,000,000	$ 1,725,000,000	$ 1,483,000,000
Income from discontinued operations	0	14,000,000	0	32,000,000
Net income attributable to Honeywell	902,000,000	810,000,000	1,725,000,000	1,515,000,000
Weighted average shares outstanding	781.4	785.0	779.3	785.2
Earnings per share continuing operations - basic:	$ 1.15	$ 1.01	$ 2.21	$ 1.89
Earnings per share discontinued operations - basic:	$ 0	$ 0.02	$ 0	$ 0.04
Earnings per share: Basic	$ 1.15	$ 1.03	$ 2.21	$ 1.93
Assuming dilution
Income from continuing operations less net income attributable to the noncontrolling interest	902,000,000	796,000,000	1,725,000,000	1,483,000,000
Income from discontinued operations	0	14,000,000	0	32,000,000
Net income attributable to Honeywell	$ 902,000,000	$ 810,000,000	$ 1,725,000,000	$ 1,515,000,000
Average shares
Weighted average shares outstanding	781.4	785.0	779.3	785.2
Dilutive securities issuable - stock plans	9.1	12.3	10.0	12.3
Total weighted average diluted shares outstanding	790.5	797.3	789.3	797.5
Earnings per share continuing operations - assuming dilution:	$ 1.14	$ 1.00	$ 2.19	$ 1.86
Earnings per share discontinued operations - assuming dilution:	$ 0	$ 0.02	$ 0	$ 0.04
Earnings per share - Assuming dilution	$ 1.14	$ 1.02	$ 2.19	$ 1.90
Earnings Per Share Paragraph Details [Abstract]
Stock options excluded from diluted computations	16.6	7.9	13.1	7.5