Goodwill and Intangible Assets, Net - Summary of Total Purchase of Intangible Asset (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 98.5	$ 54.3
Accumulated Amortization	(29.7)	(25.1)
Net Intangible Asset	68.8	29.2
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	48.8	15.5
Accumulated Amortization	(2.9)	(0.9)
Net Intangible Asset	45.9	14.6
Weighted Average Useful Life (in Years)	18 years	14 years
Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	38.1	27.4
Accumulated Amortization	(16.3)	(13.9)
Net Intangible Asset	21.8	13.5
Weighted Average Useful Life (in Years)	10 years	10 years
Patents [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11.6	11.4
Accumulated Amortization	(10.5)	(10.3)
Net Intangible Asset	$ 1.1	$ 1.1
Weighted Average Useful Life (in Years)	10 years	10 years