Amortizable Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified											9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Tradenames	Dec. 31, 2012 Tradenames	Sep. 30, 2013 Customer Relationships	Dec. 31, 2012 Customer Relationships	Sep. 30, 2013 Patents	Dec. 31, 2012 Patents	Sep. 30, 2013 Noncompete Agreements	Dec. 31, 2012 Noncompete Agreements	Sep. 30, 2012 Minimum Tradenames	Sep. 30, 2012 Minimum Customer Relationships	Sep. 30, 2012 Minimum Patents	Sep. 30, 2012 Minimum Noncompete Agreements	Sep. 30, 2012 Maximum Tradenames	Sep. 30, 2012 Maximum Customer Relationships	Sep. 30, 2012 Maximum Patents	Sep. 30, 2012 Maximum Noncompete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 508.9	$ 509.3	$ 131.0	$ 131.1	$ 333.0	$ 333.8	$ 43.5	$ 43.0	$ 1.4	$ 1.4
Accumulated Amortization	(199.6)	(178.2)	(71.9)	(67.1)	(95.5)	(81.1)	(30.9)	(28.7)	(1.3)	(1.3)
Net	$ 309.3	$ 331.1	$ 59.1	$ 64.0	$ 237.5	$ 252.7	$ 12.6	$ 14.3	$ 0.1	$ 0.1
Amortization Period (Years)											3 years	15 years	4 years	5 years	20 years	20 years	20 years	10 years