Pension Plans, Postretirement and Other Employee Benefits (Details 5) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
United States Pension Plans of US Entity, Defined Benefits [Member]
Components of net periodic pension costs (income)
Service cost-benefits earned during the period	$ 1	$ 1	$ 1
Interest cost	20	20	20
Expected return on plan assets	(23)	(21)	(22)
Curtailment loss			1
Settlement loss		6	2
Net amortization:
Actuarial loss	4	3	2
Prior service cost (credit)			1
Net pension and postretirement costs	2	9	5
Foreign Pension Plans, Defined Benefit [Member]
Components of net periodic pension costs (income)
Service cost-benefits earned during the period	6	5	4
Interest cost	19	19	18
Expected return on plan assets	(20)	(19)	(19)
Settlement loss	1
Net amortization:
Actuarial loss	5	3	2
Prior service cost (credit)	2	2	2
Net pension and postretirement costs	$ 13	$ 10	$ 7