Basis Of Presentation (Estimated Useful Lives Of Property, Plant And Equipment) (Details)	12 Months Ended
	Dec. 31, 2011 years
Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	20
Building And Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Minimum estimated useful lives of property, plant and equipment	10
Maximum estimated useful lives of property, plant and equipment	45
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Minimum estimated useful lives of property, plant and equipment	2
Maximum estimated useful lives of property, plant and equipment	17
Equipment, Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Minimum estimated useful lives of property, plant and equipment	5
Maximum estimated useful lives of property, plant and equipment	10