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Other Intangible Assets - Summary of Other Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2007
Finite-Lived Intangible Assets [Line Items]
Gross cost	$ 295.8	$ 248.6
Accumulated amortization	(132.5)	(104.2)
Other Intangible Assets, Net	163.3	144.4
Product Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	34.0	34.0
Accumulated amortization	(16.4)	(12.6)
Brand Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	8.9	8.9
Accumulated amortization	(4.4)	(3.2)
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	55.1	55.1
Accumulated amortization	(15.7)	(12.3)
Customer and Distributor Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	127.5	85.1
Accumulated amortization	(43.2)	(32.5)
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	2.9	2.9
Accumulated amortization	(2.9)	(2.9)
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	4.1	4.1
Accumulated amortization	(4.1)	(3.4)
Marketing Related [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	22.1	22.1	$ 28.4
Accumulated amortization	(22.1)	(21.2)
Internally Developed Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	41.2	36.4
Accumulated amortization	$ (23.7)	$ (16.1)

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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