Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Current	$ 37.2	$ 39.5
Future Amortization Expense, Year One	1.4
Future Amortization Expense, Year Two	0.9
Future Amortization Expense, Year Three	1.6
Future Amortization Expense, Year Four	1.6
Future Amortization Expense, Year Five	1.6
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Current	0.5	1.3
Finite-Lived Intangible Assets, Gross	3.9
Other Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Current	0.1	0.1
Timber licenses [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Current	36.6	38.1
Finite-Lived Intangible Assets, Gross	$ 77.6