Income Taxes Reconciliation of deferred taxes (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Valuation Allowance [Line Items]
Property, plant and equipment	$ 165.2	$ 172.1
Deferred Tax Liabilities	94.7	93.8
Deferred Tax Liabilities, Other	(12.6)	(3.9)
Inventory	(7.7)	(8.1)
Accrued liabilities	(79.7)	(84.9)
Deferred Tax Assets, Operating Loss Carryforwards	(137.3)	(134.0)
Deferred Tax Assets, Tax Credit Carryforwards, Other	21.0	17.8
Valuation Allowance, Amount	56.1	32.3
Deferred Tax Assets, Net, Current	0.0	(45.1)
Long-term deferred tax asset	(4.8)	(0.6)
Long-term deferred tax liability	99.5	139.5
Timber Properties
Valuation Allowance [Line Items]
Deferred Tax Liabilities	12.0	17.8
Installment sales gain deferral
Valuation Allowance [Line Items]
Deferred Tax Liabilities	128.5	129.2
Undistributed Income from Other than Gain (Loss) on Sale of Properties
Valuation Allowance [Line Items]
Deferred Tax Liabilities	$ 8.8	$ 8.9