Goodwill and Intangible Assets, Net - Changes in Balance of Goodwill (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Goodwill [Line Items]
Goodwill, Acquired During Period			$ 255.7
Goodwill [Roll Forward]
Beginning Balance	472.3	[1]	217.8
Goodwill, Translation Adjustments	(8.2)		1.2
Ending Balance	464.1		472.3	[1]
Consumer
Goodwill [Line Items]
Goodwill, Acquired During Period			0
Goodwill [Roll Forward]
Beginning Balance	217.9		217.8
Goodwill, Translation Adjustments	0		0.1
Ending Balance	217.9		217.9
Professional
Goodwill [Line Items]
Goodwill, Acquired During Period			255.7
Goodwill [Roll Forward]
Beginning Balance	254.4		0
Goodwill, Translation Adjustments	(8.2)		1.1
Ending Balance	246.2		254.4
Before Measurement Period Adjustment
Goodwill [Roll Forward]
Ending Balance			474.7	[2]
Before Measurement Period Adjustment | Consumer
Goodwill [Roll Forward]
Ending Balance			217.9	[2]
Before Measurement Period Adjustment | Professional
Goodwill [Roll Forward]
Ending Balance			256.8	[2]
Measurement Period Adjustment
Goodwill [Roll Forward]
Goodwill, Purchase Accounting Adjustments	(2.4)
Measurement Period Adjustment | Consumer
Goodwill [Roll Forward]
Goodwill, Purchase Accounting Adjustments	0
Measurement Period Adjustment | Professional
Goodwill [Roll Forward]
Goodwill, Purchase Accounting Adjustments	$ (2.4)

[1] During the year ended December 31, 2014, the Company recorded Measurement Period Adjustments (as hereinafter defined) to certain net assets and intangible assets acquired in the Colomer Acquisition (as hereinafter defined) on October 9, 2013. Accordingly, the prior period has been retrospectively adjusted for such Measurement Period Adjustments. Refer to Note 2, "Business Combination" for additional details.

[2] As previously reported in the Company's 2013 Form 10-K.