Long-Term Employee Benefits (Schedule of Assumptions Used to Determine Benefit Obligations) (Details) (Benefit Obligation [Member])	Dec. 31, 2011	Dec. 31, 2010
Pension Plans, Defined Benefit [Member]
Discount rate	4.49%	5.32%
Rate of compensation increase	4.18%	4.24%
Other Long-Term Employee Benefit Plans Defined Benefit [Member]
Discount rate	4.50%	5.50%
Rate of compensation increase	4.40%	4.50%