Long-Term Employee Benefits (Schedule of Assumptions Used to Determine Net Periodic Benefit Cost) (Details) (Net Periodic Benefit Cost [Member])	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Pension Plans, Defined Benefit [Member]
Discount rate	5.32%	5.80%	6.14%
Expected return on plan assets	8.73%	8.64%	8.75%
Rate of compensation increase	4.24%	4.24%	4.30%
Other Long-Term Employee Benefit Plans Defined Benefit [Member]
Discount rate	5.50%	6.00%	6.25%
Expected return on plan assets	0.00%	0.00%	0.00%
Rate of compensation increase	4.50%	4.50%	4.50%