Summary of Significant Accounting Policies Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Interest Costs Capitalized Adjustment	$ 1.9	$ 1.9	$ 1.3
Land, land improvements and logging roads, net of road amortization	151.5	137.0
Buildings	328.8	324.6
Machinery and equipment	1,881.8	1,897.4
Construction in progress	48.7	33.5
Property, Plant and Equipment, Gross	2,410.8	2,392.5
Accumulated depreciation	1,527.6	1,530.1
Property, Plant and Equipment, Net	$ 883.2	$ 862.4