Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 9.7	$ 0
Intangible Assets	68.3	37.2
Future Amortization Expense, Year One	3.5
Future Amortization Expense, Year Two	3.5
Future Amortization Expense, Year Three	4.2
Future Amortization Expense, Year Four	4.2
Future Amortization Expense, Year Five	4.2
Goodwill	9.7
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets	0	0.5
Customer Relationships, Gross	3.9
Other Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets	0.1	0.1
Timber licenses
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets	68.2	36.6
Customer Relationships, Gross	$ 111.8