Pension Benefit Plans and Other Postretirement Benefits (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
U.S Pension Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost	$ 7	$ 7
Interest cost	28	31
Expected asset return	(46)	(47)
Amortization
Actuarial loss	24	21
Net periodic pension and postretirement benefit cost	13	12
Non-U.S. Pension Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost	7	5
Interest cost	19	21
Expected asset return	(22)	(21)
Amortization
Actuarial loss	5	6
Net periodic pension and postretirement benefit cost	9	11
U.S Postretirement Benefit Plans
Components of the net pension expense (income) and postretirement benefit cost
Service cost	1
Interest cost	2	3
Amortization
Prior service credit	(1)	(1)
Actuarial loss	1	1
Net periodic pension and postretirement benefit cost	3	3
Non-U.S. Postretirement Benefit Plans
Components of the net pension expense (income) and postretirement benefit cost
Interest cost	1	1
Amortization
Net periodic pension and postretirement benefit cost	$ 1	$ 1