Employee Benefits Plans (Details 1)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
U.S. Plans [Member]
Summary of weighted-average actuarial assumptions used in determining annual pension expense
Discount rate	5.70%	6.20%	6.25%
Rate of increase in compensation levels	4.00%	4.00%	4.00%
Expected long-term rate of return on plan assets	7.45%	7.65%	7.90%
Transition amortization in years	0 years	0 years	0 years
Gain and loss amortization in years	25 years	26 years	27 years
Foreign Plans [Member]
Summary of weighted-average actuarial assumptions used in determining annual pension expense
Discount rate	5.55%	5.93%	6.81%
Rate of increase in compensation levels	3.55%	3.54%	4.24%
Expected long-term rate of return on plan assets	6.84%	7.04%	7.15%
Transition amortization in years	1 year	2 years	2 years
Gain and loss amortization in years	27 years	28 years	17 years