Accounting Policies (Details 4) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Income Taxes
Percentage of likelihood of realization that the tax position must exceed in order for the amount to be recognized	0.50
Reduction in unrecognized tax benefits resulting from voluntary disclosure agreements	$ 2.0
Amount of expense accrued for penalties and interest worldwide	0.7
Gross unrecognized tax benefits	1.8
Amount of unrecognized tax benefits which, if recognized, would affect the effective tax rate	1.6
Reconciliation of the beginning and ending amount of unrecognized tax benefits
Balance at the beginning of the period	3.8
Decreases related to prior year tax positions	(1.0)
Settlements	(1.0)
Balance at the end of the period	1.8
Reduction in unrecognized tax benefits related to federal, state and foreign audit settlements	1.0
Reduction in unrecognized tax benefits related to reduced exposures in Europe	$ 1.0
Buildings and improvements
Property, plant and equipment
Estimated useful lives of the assets, low end of range (in years)	10
Estimated useful lives of the assets, high end of range (in years)	40
Machinery and equipment
Property, plant and equipment
Estimated useful lives of the assets, low end of range (in years)	3
Estimated useful lives of the assets, high end of range (in years)	15