Business Segment Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) segment	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of business segments | segment	2
Segment Reporting Information [Line Items]
Total assets	$ 2,750.0		$ 2,694.0
Total property, plant and equipment, net	436.8		435.1
Net sales	648.0	$ 722.1
Inter-segment royalty expense (income)	0.0	4.8
Gross profit	267.9	286.6
Operating income (loss)	53.9	59.5
Income (loss) before income taxes	32.8	46.6
Depreciation and amortization (including stock-based compensation amortization)	27.2	16.2
Capital expenditures	21.8	12.9
Long-lived assets	436.8		435.1
United States
Segment Reporting Information [Line Items]
Net sales		533.5
Long-lived assets	375.2		373.2
Canada
Segment Reporting Information [Line Items]
Net sales		48.8
Long-lived assets	6.9		7.2
Other International
Segment Reporting Information [Line Items]
Net sales		139.8
Long-lived assets	54.7		54.7
Total International
Segment Reporting Information [Line Items]
Net sales	207.8	188.6
Long-lived assets	61.6		61.9
Operating Segments
Segment Reporting Information [Line Items]
Total property, plant and equipment, net	436.8		435.1
Operating Segments | United States
Segment Reporting Information [Line Items]
Net sales	440.2
Operating Segments | Canada
Segment Reporting Information [Line Items]
Net sales	44.8
Operating Segments | North America
Segment Reporting Information [Line Items]
Total assets	2,790.0		2,759.4
Total property, plant and equipment, net	310.6		307.6
Net sales	485.0	582.3
Gross profit	184.0	214.5
Operating income (loss)	54.0	51.4
Income (loss) before income taxes	51.8	59.4
Depreciation and amortization (including stock-based compensation amortization)	13.4	12.3
Capital expenditures	16.8	8.6
Operating Segments | North America | United States
Segment Reporting Information [Line Items]
Net sales	440.2
Operating Segments | North America | Canada
Segment Reporting Information [Line Items]
Net sales	44.8
Operating Segments | International
Segment Reporting Information [Line Items]
Total assets	639.5		609.4
Total property, plant and equipment, net	54.7		54.7
Net sales	163.0	139.8
Gross profit	83.9	72.1
Operating income (loss)	26.9	25.9
Income (loss) before income taxes	26.5	23.7
Depreciation and amortization (including stock-based compensation amortization)	3.7	3.7
Capital expenditures	2.9	1.5
Operating Segments | International | United States
Segment Reporting Information [Line Items]
Net sales	0.0
Operating Segments | International | Canada
Segment Reporting Information [Line Items]
Net sales	0.0
Operating Segments | International | Other International
Segment Reporting Information [Line Items]
Net sales	163.0
Corporate
Segment Reporting Information [Line Items]
Total assets	629.1		627.3
Total property, plant and equipment, net	71.5		72.8
Operating income (loss)	(27.0)	(17.8)
Income (loss) before income taxes	(45.5)	(36.5)
Depreciation and amortization (including stock-based compensation amortization)	10.1	0.2
Capital expenditures	2.1	2.8
Inter-segment eliminations
Segment Reporting Information [Line Items]
Total assets	(1,308.6)		$ (1,302.1)
Net sales	(0.8)	(1.0)
Inter-segment eliminations | North America
Segment Reporting Information [Line Items]
Net sales	0.6	0.9
Inter-segment royalty expense (income)	0.5	1.7
Inter-segment eliminations | International
Segment Reporting Information [Line Items]
Net sales	0.2	0.1
Inter-segment royalty expense (income)	$ (0.5)	$ (1.7)