Pension and Other Postretirement Employee Benefit Plans - Actual Rate of Return on Plan Assets (Details 4)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Defined Benefit Pension Plans, U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Actual Return On Plan Assets Percentage	0.72%	12.23%	13.78%
Defined Benefit Pension Plans, Non-U.S. [Member] | Range minimum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Actual Return On Plan Assets Percentage	(4.29%)	0.77%	3.17%
Defined Benefit Pension Plans, Non-U.S. [Member] | Range Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Actual Return On Plan Assets Percentage	13.12%	10.65%	22.43%
OPEB plans, U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Actual Return On Plan Assets Percentage	5.22%	11.23%	15.93%