Benefit Plans and Other Postretirement Benefits (Details 3) (U.S. plans, Pension Benefits)	Dec. 31, 2011	Dec. 31, 2010
Equity securities
Defined Benefit Plan Disclosure
Plan asset allocations, assumptions (as a percent)	60.00%
Expected long-term return on assets, assumptions (as a percent)	9.00%
Plan asset allocations, actual (as a percent)	62.00%	59.00%
Fixed income securities
Defined Benefit Plan Disclosure
Plan asset allocations, assumptions (as a percent)	40.00%
Expected long-term return on assets, assumptions (as a percent)	7.00%
Plan asset allocations, actual (as a percent)	37.00%	36.00%
Cash and cash equivalents
Defined Benefit Plan Disclosure
Plan asset allocations, actual (as a percent)	1.00%	5.00%