Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Net Sales	$ 1,034.0	$ 1,008.2
Income (Loss) from Operations	107.2	105.3
Depreciation and Amortization	70.7	68.1
Corporate/Other/Eliminations
Segment Reporting Information [Line Items]
Net Sales	3.4	6.1
Income (Loss) from Operations	(15.0)	(1.5)
Depreciation and Amortization	1.8	1.7
Paperboard Mills | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	101.1	103.4
Income (Loss) from Operations	(2.2)	(2.9)
Depreciation and Amortization	31.1	29.8
Americas Paperboard Packaging | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	785.2	754.0
Income (Loss) from Operations	115.3	100.7
Depreciation and Amortization	27.7	25.3
Europe Paperboard Packaging | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	144.3	144.7
Income (Loss) from Operations	9.1	9.0
Depreciation and Amortization	$ 10.1	$ 11.3