Pensions Benefit Plans and Other Postretirement Benefits (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
U.S Pension Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost	$ 6	$ 6	$ 20	$ 19
Interest cost	29	31	86	93
Expected asset return	(46)	(46)	(138)	(140)
Amortization:
Actuarial loss	24	21	72	63
Net amortization	24	21	72	63
Net periodic pension and postretirement benefit cost	13	12	40	35
Non-U.S. Pension Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost	10	6	23	18
Interest cost	18	24	55	66
Expected asset return	(22)	(23)	(66)	(67)
Amortization:
Prior service credit		(1)		(1)
Actuarial loss	6	6	17	18
Net amortization	6	5	17	17
Net periodic pension and postretirement benefit cost	12	12	29	34
U.S Postretirement Benefit Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost		1	1	1
Interest cost	2	2	6	7
Amortization:
Prior service credit		(1)	(2)	(3)
Actuarial loss		1	3	4
Net amortization			1	1
Net periodic pension and postretirement benefit cost	2	3	8	9
Non-U.S. Postretirement Benefit Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost			1	1
Interest cost	1	1	3	3
Amortization:
Net periodic pension and postretirement benefit cost	$ 1	$ 1	$ 4	$ 4