Pensions Benefit Plans and Other Postretirement Benefits (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
U.S Pension Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost	$ 7	$ 6	$ 14	$ 13
Interest cost	29	31	57	62
Expected asset return	(46)	(47)	(92)	(94)
Amortization
Actuarial loss	24	21	48	42
Net periodic pension and postretirement benefit cost	14	11	27	23
Non-U.S. Pension Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost	6	7	13	12
Interest cost	18	21	37	42
Expected asset return	(22)	(23)	(44)	(44)
Amortization
Actuarial loss	6	6	11	12
Net periodic pension and postretirement benefit cost	8	11	17	22
U.S Postretirement Benefit Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost			1
Interest cost	2	2	4	5
Amortization
Prior service credit	(1)	(1)	(2)	(2)
Actuarial loss	2	2	3	3
Net amortization	1	1	1	1
Net periodic pension and postretirement benefit cost	3	3	6	6
Non-U.S. Postretirement Benefit Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost	1	1	1	1
Interest cost	1	1	2	2
Amortization
Net periodic pension and postretirement benefit cost	$ 2	$ 2	$ 3	$ 3