Retirement Benefit Plans (Details) (USD $) In Millions	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Jun. 30, 2011	Mar. 31, 2011	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 United States pension benefit expense [Member]	Sep. 30, 2010 United States pension benefit expense [Member]	Sep. 30, 2011 United States pension benefit expense [Member]	Sep. 30, 2010 United States pension benefit expense [Member]	Sep. 30, 2011 Non-United States pension benefit expense [Member]	Sep. 30, 2010 Non-United States pension benefit expense [Member]	Sep. 30, 2011 Non-United States pension benefit expense [Member]	Sep. 30, 2010 Non-United States pension benefit expense [Member]	Sep. 30, 2011 Other postretirement benefit expense [Member]	Sep. 30, 2010 Other postretirement benefit expense [Member]	Sep. 30, 2011 Other postretirement benefit expense [Member]	Sep. 30, 2010 Other postretirement benefit expense [Member]
Defined Benefit Plan Disclosure [Line Items]
Funding postretirement Medicare Part D prescription drug benefits	$ 100
Pension contributions		250	341	378
Retirement benefit plans expense
Service cost					23	20	69	60	12	10	37	29	4	4	12	12
Interest cost					33	33	99	99	19	17	59	51	10	11	30	34
Expected return on plan assets					(41)	(39)	(123)	(117)	(17)	(15)	(53)	(46)	0	0	0	0
Amortization					19	13	57	39	3	2	9	6	3	3	9	8
Total benefit plans					34	27	102	81	17	14	52	40	17	18	51	54
Curtailment loss					0	0	0	0	1	0	1	0	0	0	0	0
Settlement loss					5	4	12	13	0	0	3	0	0	0	0	0
Total expense					$ 39	$ 31	$ 114	$ 94	$ 18	$ 14	$ 56	$ 40	$ 17	$ 18	$ 51	$ 54