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Estimated Useful Lives by Asset Category (Details)
12 Months Ended
Dec. 31, 2012
Estimated Useful Life Estimated Useful Life
Land Improvements
 
Estimated Useful Life 15 to 25 years
Building Improvements
 
Estimated Useful Life 10 to 35 years
Machinery and Equipment
 
Estimated Useful Life 7 to 15 years
Software
 
Estimated Useful Life 3 to 5 years
Other Capitalized Property Plant and Equipment
 
Estimated Useful Life 3 to 15 years