Pension and Other Postretirement Benefit Plans (Weighted-average assumptions used to determine benefit obligation at end of year) (Details)	Dec. 31, 2011	Dec. 31, 2010
United States Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	4.80%	5.60%
Rate of compensation increase	4.50%	4.50%
Foreign Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	5.00%	5.20%
Rate of compensation increase	3.50%	3.50%
Other Postretirement Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	4.80%	5.55%