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Net Sales and Long-Lived Assets by Geographic Location (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	$ 604.1				$ 528.2				$ 604.1	$ 528.2	$ 513.0
Net sales	768.6	$ 749.9	$ 738.2	$ 740.0	698.1	$ 683.9	$ 667.0	$ 636.9	2,996.7	2,685.9	2,536.5
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	303.0				292.4				303.0	292.4	297.8
Net sales									1,698.1	1,570.7	1,531.4
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	250.8				184.3				250.8	184.3	157.3
Net sales									1,034.9	887.1	787.1
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	3.2				3.1				3.2	3.1	2.7
Net sales									163.7	138.7	129.9
Other Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	$ 47.1				$ 48.4				47.1	48.4	55.2
Net sales									$ 100.0	$ 89.4	$ 88.1

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
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-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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