Segment Financial Data (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Segment Reporting Information [Line Items]
Product sales	$ 7,308	$ 6,329	$ 21,267	$ 18,320
Service sales	1,990	1,810	5,789	5,281
Net sales	9,298	8,139	27,056	23,601
Segment profit	1,367	1,159	3,928	3,244
Oher income (expense)	8	75	36	73
Interest and other financial charges	(90)	(96)	(285)	(294)
Stock compensaton (expense)	(38)	(36)	(129)	(122)
Pension (expense)	(26)	(50)	(83)	(146)
Other Postretirement income/(expense)	82	(18)	109	(12)
Repositioning and other charges	(410)	(212)	(637)	(480)
Income before taxes	893	822	2,939	2,263
Aerospace [Member]
Segment Reporting Information [Line Items]
Product sales	1,660	1,460	4,685	4,241
Service sales	1,262	1,244	3,743	3,616
Net sales	2,922	2,704	8,428	7,857
Segment profit	532	458	1,450	1,314
Repositioning and other charges	(38)	(27)	(32)	(33)
Automation and Control Solutions [Member]
Segment Reporting Information [Line Items]
Product sales	3,388	2,972	9,855	8,366
Service sales	560	502	1,629	1,469
Net sales	3,948	3,474	11,484	9,835
Segment profit	544	471	1,499	1,258
Repositioning and other charges	(137)	(34)	(182)	(63)
Specialty Materials [Member]
Segment Reporting Information [Line Items]
Product sales	1,300	1,111	3,812	3,377
Service sales	168	64	417	196
Net sales	1,468	1,175	4,229	3,573
Segment profit	254	194	819	578
Repositioning and other charges	(28)	(14)	(41)	(25)
Transportation Systems [Member]
Segment Reporting Information [Line Items]
Product sales	960	786	2,915	2,336
Service sales	0	0	0	0
Net sales	960	786	2,915	2,336
Segment profit	121	92	368	250
Repositioning and other charges	(120)	(44)	(196)	(149)
Corporate [Member]
Segment Reporting Information [Line Items]
Segment profit	(84)	(56)	(208)	(156)
Repositioning and other charges	$ (87)	$ (93)	$ (186)	$ (210)