Inventories - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Inventory [Line Items]
Inventories	$ 118.2	$ 101.2
Cosmedicine \| Prepaid Expenses, Supplies, and Other Current Assets
Inventory [Line Items]
Inventories	0.1
Cosmedicine \| Prepaid Expenses, Supplies, and Other Current Assets \| Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations
Inventory [Line Items]
Inventories	$ 0.1

Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_InventoryGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant