Accounting Policies Property plant and equipment useful lives (Details)	12 Months Ended
	Dec. 31, 2012
Land Improvements [Member]
Property, Plant and Equipment, Useful Life	10 years
Minimum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life	10 years
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life	2 years
Maximum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life	40 years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life	12 years